Toyota Mirai (2021 year). Manual in english - part 7

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7-3. Do-it-yourself maintenance

Owners Manual_USA_M62102_en

■

Removing the fuel cell unit compartment cover



Outside



Front

■

Installing the clips

1

Push up center portion 

2

Insert

3

Press

■

Removing the fuel cell 
stack cover

Remove the fuel cell stack 
cover.

Fuel cell unit compartment cover

NOTICE

■

Checking the fuel cell unit 

compartment cover after 

installation

Make sure that the cover is 

securely installed in its original 

position.

Fuel cell stack cover

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Installing the fuel cell stack 
cover

Install the fuel cell stack cover.

1

Attach the hooks on the rear 
side of the fuel cell stack 
cover.

2

Insert the front side of the 
fuel cell stack cover on the 
pins.

The coolant level is satisfactory 
if it is between the “MAX” and 
“MIN” lines on the reservoir 

when the fuel cell system is 
cold.

Fuel cell stack reservoir cap

“MAX” line

“MIN” line

If the level is on or below the “MIN” 
line, add coolant up to the “MAX” 
line. (



P.478)

The coolant level is satisfactory 
if it is between the “MAX” and 
“MIN” lines on the reservoir 
when the fuel cell system is 
cold.

NOTICE

■

Checking the fuel cell stack 

cover after installation

Make sure that the cover is 

securely installed in its original 

position.

Checking the fuel cell 
stack coolant

NOTICE

■

Fuel cell stack coolant

An exclusive coolant for the fuel 

cell system is filled in the fuel cell 

stack coolant reservoir. Do not 

use any substitute. It may dam-

age your vehicle.

Checking the inverter 
coolant

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7-3. Do-it-yourself maintenance

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Inverter coolant reservoir cap

“MAX” line

“MIN” line

If the level is on or below the “MIN” 
line, add coolant up to the “MAX” 
line. (



P.478)

■

Inverter coolant selection

Only use “Toyota Super Long Life 

Coolant” or a similar high quality 

ethylene glycol based non-silicate, 

non-amine, non-nitrite, and non-

borate coolant with long-life hybrid 

organic acid technology.
U.S.A.:
“Toyota Super Long Life Coolant” is 

a mixture of 50% coolant and 50% 

deionized water. (Minimum tem-

perature: -31°F [-35°C])
Canada:
“Toyota Super Long Life Coolant” is 

a mixture of 55% coolant and 45% 

deionized water. (Minimum tem-

perature: -44°F [-42°C])
For more details about coolant, con-

tact your Toyota dealer.

■

If the inverter coolant drops 

within a short time of replenish-

ing

Visually check the radiators, hoses, 

inverter coolant reservoir cap, drain 

cock and water pump.

If you cannot find a leak, have your 

Toyota dealer test the cap and 

check for leaks in the cooling sys-

tem.

Check the radiator and con-
denser and clear away any for-
eign objects. If either of the 
above parts is extremely dirty or 
you are not sure of their condi-
tion, have your vehicle 
inspected by your Toyota dealer.

WARNING

■

When the cell system is hot

Do not remove the coolant reser-

voir caps. (



P.481)

The cooling system may be under 

pressure and may spray hot cool-

ant if the cap is removed, causing 

serious injuries, such as burns.

NOTICE

■

When adding coolant

Coolant is neither plain water nor 

straight antifreeze. The correct 

mixture of water and antifreeze 

must be used to provide proper 

lubrication, corrosion protection 

and cooling. Be sure to read the 

antifreeze or coolant label.

■

If you spill coolant

Be sure to wash it off with water to 

prevent it from damaging parts or 

paint.

Checking the radiator and 
condenser

WARNING

■

When the fuel cell system is 

hot

Do not touch the radiator or con-

denser as they may be hot and 

cause serious injuries, such as 

burns.

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Checking fluid level

The brake fluid level should be 
between the “MAX” and “MIN” 
lines on the tank.

Brake fluid reservoir cap

“MAX” line

“MIN” line

■

Adding fluid

Make sure to check the fluid 
type and prepare the necessary 
item.



Fluid type

FMVSS No.116 DOT 3 or SAE 
J1703 brake fluid
FMVSS No.116 DOT 4 or SAE 
J1704 brake fluid



Item

Clean funnel

■

Brake fluid can absorb moisture 

from the air

Excess moisture in the brake fluid 

can cause a dangerous loss of brak-

ing efficiency. Use only newly 

opened brake fluid.

If any washer does not work or 
the warning message appears 
on the multi-information display, 
the washer tank may be empty. 
Add washer fluid.

Checking and adding the 
brake fluid

WARNING

■

When filling the reservoir

Take care as brake fluid can harm 

your hands and eyes and damage 

painted surfaces.

If fluid gets on your hands or in 

your eyes, flush the affected area 

with clean water immediately.
If you still experience discomfort, 

see a doctor.

NOTICE

■

If the fluid level is low or high

It is normal for the brake fluid level 

to go down slightly as the brake 

pads wear out or when the fluid 

level in the accumulator is high.

If the reservoir needs frequent 

refilling, there may be a serious 

problem.

Adding the washer fluid

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The 12-volt battery is located in 
the right-hand side of the trunk.

Remove the luggage mat: 



P.354

■

Before recharging

When recharging, the 12-volt bat-

tery produces hydrogen gas which 

is flammable and explosive. There-

fore, observe the following precau-

tions before recharging:

●

If recharging with the 12-volt bat-

tery installed on the vehicle, be 

sure to disconnect the ground 

cable.

●

Make sure the charger is off when 

connecting and disconnecting the 

charger cables to the 12-volt bat-

tery.

■

After recharging/reconnecting 

the 12-volt battery

●

Unlocking the doors using the 

smart key system may not be pos-

sible immediately after reconnect-

ing the 12-volt battery. If this 

happens, use the wireless remote 

control or the mechanical key to 

lock/unlock the doors.

●

Start the fuel cell system with the 

power switch in ACC. The fuel cell 

system may not start with the 

power switch turned off. However, 

the fuel cell system will operate 

normally from the second attempt.

WARNING

■

When adding washer fluid

Do not add washer fluid when the 

fuel cell system is hot or operating 

as washer fluid contains alcohol 

and may catch fire if spilled on the 

fuel cell system, etc.

NOTICE

■

Do not use any fluid other 

than washer fluid

Do not use soapy water or anti-

freeze instead of washer fluid.

Doing so may cause streaking on 

the vehicle’s painted surfaces, as 

well as damaging the pump lead-

ing to problems of the washer 

fluid not spraying.

■

Diluting washer fluid

Dilute washer fluid with water as 

necessary.

Refer to the freezing tempera-

tures listed on the label of the 

washer fluid bottle.

12-volt battery

Location

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●

The power switch mode is 

recorded by the vehicle. If the 12-

volt battery is reconnected, the 

vehicle will return the power 

switch mode to the status it was in 

before the 12-volt battery was dis-

connected. Make sure to turn off 

the power switch before discon-

necting the 12-volt battery. Take 

extra care when connecting the 

12-volt battery if the power switch 

mode prior to discharge is 

unknown.

●

When the 12-volt battery is recon-

nected, start the fuel cell system, 

depress the brake pedal, and con-

firm that it is possible to shift into 

each shift position.

If the system will not start even after 

multiple attempts, contact your Toy-

ota dealer.

WARNING

■

Chemicals in the 12-volt bat-

tery

The 12-volt battery contains poi-

sonous and corrosive sulfuric acid 

and may produce hydrogen gas 

which is flammable and explosive. 

To reduce the risk of death or seri-

ous injury, take the following pre-

cautions while working on or near 

the 12-volt battery:

●

Do not cause sparks by touch-

ing the 12-volt battery terminals 

with tools.

●

Do not smoke or light a match 

near the 12-volt battery.

●

Avoid contact with eyes, skin 

and clothes.

●

Never inhale or swallow electro-

lyte.

●

Wear protective safety glasses 

when working near the 12-volt 

battery.

●

Keep children away from the 

12-volt battery.

■

Where to safely charge the 

12-volt battery

Always charge the 12-volt battery 

in an open area. Do not charge 

the 12-volt battery in a garage or 

closed room where there is insuf-

ficient ventilation.

■

Emergency measures regard-

ing electrolyte

●

If electrolyte gets in your eyes

Flush your eyes with clean 

water for at least 15 minutes 

and get immediate medical 

attention. If possible, continue 

to apply water with a sponge or 

cloth while traveling to the near-

est medical facility.

●

If electrolyte gets on your skin

Wash the affected area thor-

oughly. If you feel pain or burn-

ing, get medical attention 

immediately.

●

If electrolyte gets on your 

clothes

It can soak through clothing on 

to your skin. Immediately take 

off the clothing and follow the 

procedure above if necessary.

●

If you accidentally swallow elec-

trolyte

Drink a large quantity of water 

or milk. Get emergency medical 

attention immediately.

■

When replacing the 12-volt 

battery

Use a 12-volt battery designed for 

this vehicle. Failure to do so may 

cause gas (hydrogen) to enter the 

passenger compartment, causing 

a fire or explosion.
For replacement of the 12-volt 

battery, contact your Toyota 

dealer.

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Make sure that the 12-volt bat-
tery terminals are not corroded 
and that there are no loose con-
nections, cracks, or loose 
clamps.

Terminals

Hold-down clamp

Check the 12-volt battery condi-
tion by indicator color.

Blue: Good condition

Red: Charging is necessary.
Have the vehicle inspected 
by your Toyota dealer.

Clear: Replacement is nec-
essary.
Have the 12-volt battery 
checked by your Toyota 
dealer.

NOTICE

■

When recharging the 12-volt 

battery

Never recharge the 12-volt bat-

tery while the fuel cell system is 

operating. Also, be sure all acces-

sories are turned off.

Exterior

Checking the 12-volt bat-
tery condition

405

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Check if the treadwear indica-
tors are showing on the tires. 
Also check the tires for uneven 
wear, such as excessive wear 
on one side of the tread.

New tread

Worn tread

Treadwear indicator

The location of treadwear indicators 
is shown by a “TWI” or “

” mark, 

etc., molded into the sidewall of 
each tire.

Replace the tires if the treadwear 
indicators are showing on a tire.

■

When to replace your vehicle’s 

tires

Tires should be replaced if:

●

The treadwear indicators are 

showing on a tire.

●

You have tire damage such as 

cuts, splits, cracks deep enough 

to expose the fabric, and bulges 

indicating internal damage

●

A tire goes flat repeatedly or can-

not be properly repaired due to the 

size or location of a cut or other 

damage

If you are not sure, consult with your 

Toyota dealer.

■

Tire life

Any tire over 6 years old must be 

checked by a qualified technician 

even if it has seldom or never been 

used or damage is not obvious.

■

Maximum load of tire

Check that the maximum load of the 

replacement tire is greater than 1/2 

of the Gross Axle Weight Ratings 

(GAWR) of either the front axle or 

the rear axle, whichever is greater.
For the GAWR, see the Certification 

Label.

For the maximum load of the tire, 

see the load limit at maximum cold 

tire inflation pressure mentioned on 

the sidewall of the tire. (



P.490)

■

Tire types

●

Summer tires

Summer tires are high-speed perfor-

Tires

Replace or rotate tires in 
accordance with mainte-
nance schedules and tread-
wear.

Checking tires

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mance tires best suited to highway 
driving under dry conditions. Since 
summer tires do not have the same 
traction performance as snow tires, 
summer tires are inadequate for 
driving on snow-covered or icy 
roads. For driving on snow-covered 
roads or icy roads, the use of snow 
tires is recommended. When install-
ing snow tires, be sure to replace all 
four tires.

●

All season tires

All season tires are designed to pro-
vide better traction in snow and to 
be adequate for driving in most win-
ter conditions as well as for use 
year-round. All season tires, how-
ever, do not have adequate traction 
performance compared with snow 
tires in heavy or loose snow. Also, 
all season tires fall short in accelera-
tion and handling performance com-
pared with summer tires in highway 
driving.

●

Snow tires

For driving on snow-covered roads 
or icy roads, we recommend using 
snow tires. If you need snow tires, 
select tires of the same size, con-
struction and load capacity as the 
originally installed tires. Since your 
vehicle has radial tires as original 
equipment, make sure your snow 
tires also have radial construction. 
Do not install studded tires without 
first checking local regulations for 
possible restrictions. Snow tires 
should be installed on all wheels. 
(



P.321)

■

If the tread on snow tires wears 

down below 0.16 in. (4 mm)

The effectiveness of the tires as 

snow tires is lost.

Rotate the tires in the order 

WARNING

■

When inspecting or replacing 

tires

Observe the following precautions 

to prevent accidents.

Failure to do so may cause dam-

age to parts of the drive train as 

well as dangerous handling char-

acteristics, which may lead to an 

accident resulting in death or seri-

ous injury.

●

Do not mix tires of different 

makes, models or tread pat-

terns.

Also, do not mix tires of remark-

ably different treadwear.

●

Do not use tire sizes other than 

those recommended by Toyota.

●

Do not mix differently con-

structed tires (radial, bias-belted 

or bias-ply tires).

●

Do not mix summer, all season 

and snow tires.

●

Do not use tires that have been 

used on another vehicle.

Do not use tires if you do not 

know how they were used previ-

ously.

NOTICE

■

Driving on rough roads

Take particular care when driving 

on roads with loose surfaces or 

potholes.

These conditions may cause 

losses in tire inflation pressure, 

reducing the cushioning ability of 

the tires. In addition, driving on 

rough roads may cause damage 

to the tires themselves, as well as 

the vehicle’s wheels and body.

Tire rotation

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shown.

Front

To equalize tire wear and extend 
tire life, Toyota recommends that 
tire rotation is carried out at the 
same interval as tire inspection.
Do not fail to initialize the tire pres-
sure warning system after tire rota-
tion.

Your vehicle is equipped with a 
tire pressure warning system 
that uses tire pressure warning 
valves and transmitters to detect 
low tire inflation pressure before 
serious problems arise.



The tire pressure detected by 
the tire pressure warning sys-
tem can be displayed on the 
multi-information display. 
(



P.105)



If the tire pressure drops 
below a predetermined level, 
the driver is warned by a 
screen display and a warning 
light. (



P.449)

■

Routine tire inflation pressure 

checks

The tire pressure warning system 

does not replace routine tire inflation 

pressure checks. Make sure to 

check tire inflation pressure as part 

of your routine of daily vehicle 

checks.

■

Tire inflation pressure

●

It may take a few minutes to dis-

play the tire inflation pressure 

after the power switch is turned to 

ON. It may also take a few min-

utes to display the tire inflation 

pressure after inflation pressure 

has been adjusted.

●

Tire inflation pressure changes 

with temperature. The displayed 

values may also be different from 

the values measured using a tire 

pressure gauge.

Tire pressure warning 
system

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■

Situations in which the tire 

pressure warning system may 

not operate properly

●

In the following cases, the tire 

pressure warning system may not 

operate properly.

• If non-genuine Toyota wheels are 

used.

• If a tire has been replaced with a 

tire that is not an OE (Original 

Equipment) tire.

• If a tire has been replaced with a 

tire that is not of the specified size.

• If tire chains, etc. are installed.

• If a window tint that affects the 

radio wave signals is installed.

• If there is a lot of snow or ice on 

the vehicle, particularly around the 

wheels or wheel housings.

• If the tire inflation pressure is 

much higher than the specified 

level.

• If wheels not equipped with tire 

pressure warning valves and 

transmitter are used.

• If the ID code on the tire pressure 

warning valves and transmitters is 

not registered in the tire pressure 

warning computer.

●

Performance may be affected in 

the following situations.

• When driving near a TV tower, 

electric power plant, gas station, 

radio station, large display, airport 

or other facility that generates 

strong radio waves or electrical 

noise

• When carrying a portable radio, 

cellular phone, cordless phone or 

other wireless communication 

device

If tire position information is not cor-

rectly displayed due to the radio 

wave conditions, the display may be 

corrected by changing the location 

of the vehicle as the radio wave 

conditions may change.

●

When the vehicle is stopped, the 

time taken for the warning to start 

or turn off may be longer.

●

When the inflation pressure of a 

tire drops rapidly, for example 

when a tire has burst, the warning 

may not operate.

■

Warning performance of the tire 

pressure warning system

The warning of the tire pressure 

warning system will change in 

accordance the conditions under 

which it was initialized. For this rea-

son, the system may give a warning 

even if the tire pressure does not 

reach a low enough level, or if the 

pressure is higher than the pressure 

that was adjusted to when the sys-

tem was initialized.

■

Tire pressure warning system 

certification



P.557

When replacing the tires or 
wheels, the tire pressure warn-
ing valves and transmitters must 
be installed to the wheels which 
will be installed to the vehicle.
When new tire pressure warning 
valves and transmitters are 
installed, new ID codes must be 
registered in the tire pressure 
warning computer and the tire 
pressure warning system must 
be initialized. (



P.411)

■

Replacing tires and wheels

If the ID codes of the tire pressure 

warning valves and transmitters are 

not registered, the tire pressure 

warning system will not work prop-

erly. In this case, after driving for 

about 10 minutes, the tire pressure 

warning light will blink for approxi-

mately 1 minute and then illuminate 

to indicate a system malfunction.

Installing tire pressure 
warning valves and trans-
mitters

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■

The tire pressure warning 
system must be initialized 
in the following circum-
stances:



When the tire inflation pres-
sure is changed such as 
when changing traveling 
speed or load weight.



When the tire inflation pres-
sure is changed such as 
when the tire size is changed.



When rotating the tires.



After performing the transmit-
ter ID code registration proce-
dure. (



P.411)

When the tire pressure warning 
system is initialized, the current 
tire inflation pressure is set as 
the benchmark pressure.

■

How to initialize the tire 
pressure warning system

1

Park the vehicle in a safe 
place, turn the power switch 
off and wait 20 minutes or 
more.

Initialization cannot be performed 

while the vehicle is moving.

2

Adjust the tire inflation pres-
sure to the specified cold tire 
inflation pressure level.

Make sure to adjust the tire pres-

sure to the specified cold tire infla-

tion pressure level. The tire 

pressure warning system will oper-

ate based on this pressure level.

3

Start the fuel cell system.

4

Press 

 or 

 of the meter 

control switch to select 

.

5

Press 

 or 

 to select 

“Vehicle Settings” and then 
press and hold 

.

6

Press 

 or 

 to select 

“TPWS” and then press 

.

7

Press 

 or 

 to select “Set 

Pressure”. Then press and 
hold 

 until the tire pressure 

warning light starts blinking.

A message is displayed on the 

multi-information display. Also, “--” 

is displayed for inflation pressure of 

NOTICE

■

Repairing or replacing tires, 

wheels, tire pressure warn-

ing valves, transmitters and 

tire valve caps

●

When removing or fitting the 

wheels, tires or the tire pressure 

warning valves and transmit-

ters, contact your Toyota dealer 

as the tire pressure warning 

valves and transmitters may be 

damaged if not handled cor-

rectly.

●

Make sure to install the tire 

valve caps. If the tire valve caps 

are not installed, water could 

enter the tire pressure warning 

valves, corrode the valve, and 

cause sticking and air leaks.

●

When replacing tire valve caps, 

do not use tire valve caps other 

than those specified. The cap 

may become stuck.

Initializing the tire pres-
sure warning system

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each tire on the multi-information 

display while the tire pressure 

warning system determines the 

position.

8

Drive at approximately 25 
mph (40 km/h) or more for 
approximately 10 to 30 min-
utes.

When initialization is complete, the 

inflation pressure of each tire will be 

displayed on the multi-information 

display.
Even if the vehicle is not driven at 

approximately 25 mph (40 km/h) or 

more, initialization can be com-

pleted by driving for a long time. 

However, if initialization does not 

complete after driving for 1 hour or 

more, park the vehicle in a safe 

place for approximately 20 minutes 

and then drive the vehicle again.

■

When initializing

●

Initialization is performed while 

driving at a vehicle speed of 

approximately 25 mph (40 km/h) 

or more.

●

Make sure to carry out initializa-

tion after adjusting the tire inflation 

pressure. Also, make sure the 

tires are cold before carrying out 

initialization or tire inflation pres-

sure adjustment.

●

The tire pressure warning system 

can be initialized by yourself, but 

depending on the driving condi-

tions and driving environment, ini-

tialization may take some time to 

complete.

■

The initialization operation

●

If you have accidentally turned the 

power switch off during initializa-

tion, it is not necessary to manu-

ally restart the initialization again, 

as initialization will restart auto-

matically the next time the power 

switch is turned to ON.

●

If you accidentally perform initial-

ization when initialization is not 

necessary, adjust the tire inflation 

pressure to the specified level 

when the tires are cold, and con-

duct initialization again.

●

While the position of each tire is 

being determined and the inflation 

pressures are not being displayed 

on the multi-information display, if 

the inflation pressure of a tire 

drops, the tire pressure warning 

light will come on.

■

If the tire pressure warning sys-

tem is not initialized properly

●

In the following situations, initial-

ization may take longer than usual 

to be completed or may not be 

possible. Normally, initialization 

completes within approximately 

30 minutes.

• Vehicle is not driven at approxi-

mately 25 mph (40 km/h) or more

• Vehicle is driven on unpaved 

roads

• Vehicle is driven near other vehi-

cles and system cannot recog-

nize tire pressure warning valve 

and transmitters of your vehicle 

over those of other vehicles

If initialization does not complete 

after driving for 1 hour or more, park 

the vehicle in a safe place for 

approximately 20 minutes and then 

drive the vehicle again.

●

If the vehicle is reversed during 

initialization, the data up to that 

point is reset, so perform the ini-

tialization procedure again from 

the beginning.

●

In the following situations, initial-

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ization will not be started or was 

not completed properly and the 

system will not operate properly. 

Perform the initialization proce-

dure again.

• If, when attempting to start initial-

ization, the tire pressure warning 

light does not blink 3 times.

• If, when the vehicle has been 

driven for about 20 minutes after 

performing initialization, the tire 

pressure warning light blinks for 

approximately 1 minute and then 

illuminates.

If initialization cannot be completed 

after performing the above proce-

dure, contact your Toyota dealer.

Every tire pressure warning 
valve and transmitter has a 
unique ID code. When replacing 
a tire pressure warning valve 
and transmitter, it is necessary 
to register the ID codes.
When registering the ID codes, 
perform the following procedure.

1

When registering the ID 
codes, perform the following 
procedure.Park the vehicle in 
a safe place and turn the 
power switch off, wait for 

approximately 15 minutes or 
more and perform the proce-
dure.

2

Start the fuel cell system. 
(



P.172)

3

Press 

 or 

 of the meter 

control switch to select 

.

4

Press 

 or 

 to select 

“Vehicle Settings” and then 
press and hold 

.

5

Press 

 or 

 to select 

“TPWS” and then press 

.

6

Press 

 or 

 to select 

“Change Wheel”. Then press 
and hold 

 until the tire 

pressure warning light blinks 
slowly 3 times.

Then a message will be displayed 

on the multi-information display.
When registration is being per-

formed, the tire pressure warning 

light will blink for approximately 1 

minute then illuminate and “--” will 

be displayed for the inflation pres-

sure of each tire on the multi-infor-

mation display.

WARNING

■

When initializing the tire pres-

sure warning system

Do not initialize the tire pressure 

warning system without first 

adjusting the tire inflation pres-

sure to the specified level. Other-

wise, the tire pressure warning 

light may not come on even if the 

tire inflation pressure is low, or it 

may come on when the tire infla-

tion pressure is actually normal.

Registering ID codes

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7

Drive at 25 mph (40 km/h) or 
more for approximately 10 to 
30 minutes.

Registration is complete when the 

tire pressure warning light turns off 

and the inflation pressure of each 

tire is displayed on the multi-infor-

mation display.
Even if the vehicle is not driven at 

approximately 25 mph (40 km/h) or 

more, registration can be com-

pleted by driving for a long time. 

However, if registration does not 

complete after driving for 1 hour or 

more, perform the procedure again 

from the beginning.

8

Initialize the tire pressure 
warning system. (



P.409)

■

When registering ID codes

●

ID code registration is performed 

while driving at a vehicle speed of 

approximately 25 mph (40 km/h) 

or more.

●

Before performing ID code regis-

tration, make sure that no wheels 

with tire pressure warning valve 

and transmitters installed are near 

the vehicle.

●

Make sure to initialize the tire 

pressure warning system after 

registering the ID codes. If the 

system is initialized before regis-

tering the ID codes, the initialized 

values will be invalid.

●

ID codes can be registered by 

yourself, but depending on the 

driving conditions and driving 

environment, registration may 

take some time to complete.

■

Canceling ID code registration

●

To cancel ID code registration 

after it has been started, turn the 

power switch off before driving the 

vehicle.

If the vehicle is driven after ID 

code registration is started, to 

cancel registration, perform the ID 

code registration start procedure 

again and turn the power switch 

off before driving.

●

If ID code registration has been 

canceled, the tire pressure warn-

ing light will blink for approxi-

mately 1 minute when the power 

switch is turned to ON and then 

illuminate. The tire pressure warn-

ing system will be operational 

when the tire pressure warning 

light turns off.

●

If the warning light does not turn 

off even after several minutes 

have elapsed, ID code registration 

may not have been canceled cor-

rectly. To cancel registration, per-

form the ID code registration start 

procedure again and then turn the 

power switch off before driving.

■

If ID codes are not registered 

properly

●

In the following situations, ID code 

registration may take longer than 

usual to be completed or may not 

be possible. Normally, registration 

completes within approximately 

30 minutes.

• Vehicle is not parked for approxi-

mately 20 minutes or more before 

driving

• Vehicle is not driven at approxi-

mately 25 mph (40 km/h) or more

• Vehicle is driven on unpaved 

roads

• Vehicle is driven near other vehi-

cles and system cannot recog-

nize tire pressure warning valves 

and transmitters of your vehicle 

over those of other vehicles

• Wheel with tire pressure warning 

valve and transmitter installed is 

inside or near the vehicle

If registration does not complete 
after driving for 1 hour or more, per-
form the ID code registration proce-
dure again from the beginning.

●

If the vehicle is reversed during 

registration, the data up to that 

point is reset, so perform the reg-

istration procedure again from the 

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beginning.

●

In the following situations, ID code 

registration will not be started or 

was not completed properly and 

the system will not operate prop-

erly. Perform the ID code registra-

tion procedure again.

• If, when attempting to start ID 

code registration, the tire pressure 

warning light does not blink slowly 

3 times.

• If, when the vehicle has been 

driven for about 20 minutes after 

performing ID code registration, 

the tire pressure warning light 

blinks for approximately 1 minute 

and then illuminates.

●

If ID code registration cannot be 

completed after performing the 

above procedure, contact your 

Toyota dealer.



Stop the vehicle in a safe 
place on a hard, flat surface.



Set the parking brake.



Shift the shift position to P.



Stop the fuel cell system.

■

Jack and tools

As your vehicle is not installed spare 

tire, the following tools for replacing 

a tire are not included with your 

vehicle. They can be purchased at 

your Toyota dealer.

●

Wheel nut wrench

●

Jack

●

Jack handle

Replacing the tire

When raising your vehicle 
with a jack, position the jack 
correctly.
Improper placement may 
damage your vehicle or 
cause injury.
If necessary tire replace-
ment seems difficult to per-
form, contact your Toyota 
dealer.

Before jacking up the 
vehicle

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7-3. Do-it-yourself maintenance

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1

Chock the tires.

2

Slightly loosen the wheel 
nuts (one turn).

3

Turn the tire jack portion   
by hand until the notch of the 

WARNING

■

Using the tire jack

Observe the following precau-

tions.

Improper use of the tire jack may 

cause the vehicle to suddenly fall 

off the jack, leading to death or 

serious injury.

●

Do not use the tire jack for any 

purpose other than replacing 

tires or installing and removing 

tire chains.

●

Do not use other tire jacks for 

replacing tires on this vehicle.

●

Put the jack properly in its jack 

point.

●

Do not put any part of your body 

under the vehicle while it is sup-

ported by the jack.

●

Do not start the fuel cell system 

or drive the vehicle while the 

vehicle is supported by the jack.

●

Do not raise the vehicle while 

someone is inside.

●

When raising the vehicle, do not 

put an object on or under the 

jack.

●

Do not raise the vehicle to a 

height greater than that required 

to replace the tire.

●

Use a jack stand if it is neces-

sary to get under the vehicle.

●

When lowering the vehicle, 

make sure that there is no-one 

near the vehicle. If there are 

people nearby, warn them 

vocally before lowering.

Removing a tire

Tire

Wheel chock 

positions

Front left-hand 
side

Behind the rear 
right-hand side 
tire

Front right-hand 
side

Behind the rear 
left-hand side tire

Rear left-hand 
side

In front of the 
front right-hand 
side tire

Rear right-hand 
side

In front of the 
front left-hand 
side tire

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jack is in contact with the jack 
point.

The jack point guides are located 

under the rocker panel. They indi-

cate the jack point positions.

4

Raise the vehicle until the tire 
is slightly raised off the 
ground.

5

Remove all the wheel nuts 
and the tire.

When resting the tire on the 

ground, place the tire so that the 

wheel design faces up to avoid 

scratching the wheel surface.

1

Remove any dirt or foreign 
matter from the wheel con-
tact surface.

If foreign matter is on the wheel 

contact surface, the wheel nuts 

may loosen while the vehicle is in 

motion, causing the tire to come off.

WARNING

■

Replacing a tire

Do not touch the disc wheels or 

the area around the brakes imme-

diately after the vehicle has been 

driven.
After the vehicle has been driven 

the disc wheels and the area 

around the brakes will be 

extremely hot. Touching these 

areas with hands, feet or other 

body parts while changing a tire, 

etc. may result in burns.

Installing the tire

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7-3. Do-it-yourself maintenance

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2

Install the tire and loosely 
tighten each wheel nut by 
hand by approximately the 
same amount.

Turn the wheel nuts until the wash-

ers come into contact with the disc 

wheel.

Washer

Disc wheel

3

Lower the vehicle.

4

Firmly tighten each wheel nut 
two or three times in the 
order shown in the illustra-
tion.
Tightening torque:

103 ft•lbf (140 N•m, 14.3 
kgf•m)

WARNING

■

When installing the tire

Failure to follow these precau-

tions could cause the wheel nuts 

to loosen and the tire to fall off, 

resulting in death or serious injury.

●

Never use oil or grease on the 

wheel bolts or wheel nuts.

Oil and grease may cause the 

wheel nuts to be excessively 

tightened, leading to bolt or disc 

wheel damage. In addition, the 

oil or grease can cause the 

wheel nuts to loosen and the 

wheel may fall off, causing a 

serious accident. Remove any 

oil or grease from the wheel 

bolts or wheel nuts.

●

Have the wheel nuts tightened 

with a torque wrench to 103 

ft•lbf (140 N•m, 14.3 kgf•m) as 

soon as possible after changing 

wheels.

●

Do not attach a heavily dam-

aged wheel ornament, as it may 

fly off the wheel while the vehi-

cle is moving.

●

When installing a tire, only use 

wheel nuts that have been spe-

cifically designed for that wheel.

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The recommended cold tire 
inflation pressure and tire size 
are displayed on the tire and 
loading information label. 
(



P.488)

Tire valve

WARNING

●

If there are any cracks or defor-

mations in the bolt screws, nut 

threads or bolt holes of the 

wheel, have the vehicle 

inspected by your Toyota 

dealer.

NOTICE

■

Repairing or replacing tires, 

wheels, tire pressure warn-

ing valves, transmitters and 

tire valve caps



P.408

Tire inflation pressure

Checking the specified 
tire inflation pressure

Inspection and adjust-
ment procedure

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7-3. Do-it-yourself maintenance

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Tire pressure gauge

1

Remove the tire valve cap.

2

Press the tip of the tire pres-
sure gauge onto the tire 
valve.

3

Read the pressure using the 
gauge gradations.

4

If the tire inflation pressure is 
not at the recommended 
level, adjust the pressure.
If you add too much air, press 
the center of the valve to 
deflate.

5

After completing the tire infla-
tion pressure measurement 
and adjustment, apply soapy 
water to the valve and check 
for leakage.

6

Put the tire valve cap back 
on.

■

Tire inflation pressure check 

interval

You should check tire inflation pres-

sure every two weeks, or at least 

once a month. Do not forget to 

check the spare.

■

Effects of incorrect tire inflation 

pressure

Driving with incorrect tire inflation 

pressure may result in the following:

●

Reduced fuel economy

●

Reduced driving comfort and poor 

handling

●

Reduced tire life due to wear

●

Reduced safety

●

Damage to the drive train

If a tire needs frequent inflating, 

have it checked by your Toyota 

dealer.

■

Instructions for checking tire 

inflation pressure

When checking tire inflation pres-

sure, observe the following:

●

Check only when the tires are 

cold.

If your vehicle has been parked for 

at least 3 hours or has not been 

driven for more than 1 mile or 1.5 

km, you will get an accurate cold 

tire inflation pressure reading.

●

Always use a tire pressure gauge.

It is difficult to judge if a tire is 

properly inflated based only on its 

appearance.

●

It is normal for the tire inflation 

pressure to be higher after driving 

as heat is generated in the tire. Do 

not reduce tire inflation pressure 

after driving.

●

Never exceed the vehicle capacity 

weight.

Passengers and luggage weight 

should be placed so that the vehi-

cle is balanced.

WARNING

■

Proper inflation is critical to 

save tire performance

Keep your tires properly inflated.

If the tires are not properly 

inflated, the following conditions 

may occur which could lead to an 

accident resulting in death or seri-

ous injury:

●

Excessive wear

●

Uneven wear

●

Poor handling

●

Possibility of blowouts resulting 

from overheated tires

●

Air leaking from between tire 

and wheel

●

Wheel deformation and/or tire 

damage

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When replacing wheels, care 
should be taken to ensure that 
they are equivalent to those 
removed in load capacity, diam-
eter, rim width and inset

*

.

Replacement wheels are avail-
able at your Toyota dealer.

*

: Conventionally referred to as off-

set.

Toyota does not recommend 
using the following:



Wheels of different sizes or 
types



Used wheels



Bent wheels that have been 
straightened

■

When replacing wheels

The wheels of your vehicle are 

equipped with tire pressure warning 

valves and transmitters that allow 

the tire pressure warning system to 

provide advance warning in the 

event of a loss in tire inflation pres-

sure. Whenever wheels are 

replaced, the tire pressure warning 

valves and transmitters must be 

installed. (



P.408)

WARNING

●

Greater possibility of tire dam-

age while driving (due to road 

hazards, expansion joints, 

sharp edges in the road, etc.)

NOTICE

■

When inspecting and adjust-

ing tire inflation pressure

Be sure to put the tire valve caps 

back on.

If a valve cap is not installed, dirt 

or moisture may get into the valve 

and cause an air leak, resulting in 

decreased tire inflation pressure.

Wheels

If a wheel is bent, cracked or 
heavily corroded, it should 
be replaced. Otherwise, the 
tire may separate from the 
wheel or cause a loss of 
handling control.

Wheel selection

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7-3. Do-it-yourself maintenance

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

Use only Toyota wheel nuts 
and wheel nut wrenches 
designed for use with your 
aluminum wheels.



When rotating, repairing or 
changing your tires, check 
that the wheel nuts are still 
tight after driving 1000 miles 
(1600 km).



Be careful not to damage the 
aluminum wheels when using 
tire chains.



Use only Toyota genuine bal-
ance weights or equivalent 
and a plastic or rubber ham-
mer when balancing your 
wheels.

WARNING

■

When replacing wheels

●

Do not use wheels that are a dif-

ferent size from those recom-

mended in the Owner’s Manual, 

as this may result in a loss of 

handling control.

●

Never use an inner tube in a 

leaking wheel which is designed 

for a tubeless tire.

Doing so may result in an acci-

dent, causing death or serious 

injury.

■

When installing the wheel 

nuts

Never use oil or grease on the 

wheel bolts or wheel nuts. Oil and 

grease may cause the wheel nuts 

to be excessively tightened, lead-

ing to bolt or disc wheel damage. 

In addition, the oil or grease can 

cause the wheel nuts to loosen 

and the wheel may fall off, caus-

ing an accident and resulting in 

death or serious injury. Remove 

any oil or grease from the wheel 

bolts or wheel nuts.

■

Use of defective wheels pro-

hibited

Do not use cracked or deformed 

wheels. Doing so could cause the 

tire to leak air during driving, pos-

sibly causing an accident.

NOTICE

■

Replacing tire pressure warn-

ing valves and transmitters

●

Because tire repair or replace-

ment may affect the tire pres-

sure warning valves and 

transmitters, make sure to have 

tires serviced by your Toyota 

dealer or other qualified service 

shop. In addition, make sure to 

purchase your tire pressure 

warning valves and transmit-

ters at your Toyota dealer.

●

Ensure that only genuine Toyota 

wheels are used on your vehi-

cle.

Tire pressure warning valves 

and transmitters may not work 

properly with non-genuine 

wheels.

Aluminum wheel precau-
tions

421

7-3. Do-it-yourself maintenance

Owners Manual_USA_M62102_en

7

Maintena

nce
 a

nd ca

re

1

Turn the power switch off.

2

Open the glove box.

3

Remove the panel.

4

Unlock the filter cover ( ), 
pull the filter cover out of the 

claws ( ), and remove the 
filter cover.

5

Remove the filter case.

6

Remove the air conditioning 
filter from the filter case and 
replace it with a new one.

The “

UP” marks shown on the 

filter and the filter case should be 
pointing up.

■

Checking interval

Inspect and replace the air condi-

tioning filter according to the mainte-

nance schedule. In dusty areas or 

Air conditioning filter

The air conditioning filter 
must be changed regularly 
to maintain air conditioning 
efficiency.

Removing the air condi-
tioning filter

422

7-3. Do-it-yourself maintenance

Owners Manual_USA_M62102_en

areas with heavy traffic flow, early 

replacement may be required. (For 

scheduled maintenance information, 

please refer to the “Owner’s Manual 

Supplement” or “Scheduled Mainte-

nance”.)

■

If air flow from the vents 

decreases dramatically

The filter may be clogged. Check 

the filter and replace if necessary.

■

Air conditioning filter with 

deodorizing function

When fragrances are placed in your 

vehicle, the deodorizing effect may 

become significantly weakened in a 

short period.

When an air conditioning odor 

comes out continuously, replace the 

air conditioning filter.

Remove the dust from the air 
intake vents with a vacuum 
cleaner etc.

Make sure to only use a vacuum to 
suck out dust and clogs. Attempting 
to blow out dust and clogs using an 
airgun etc. may push it into the air 
intake vents. (



P.424)

NOTICE

■

When using the air condition-

ing system

Make sure that a filter is always 

installed.

Using the air conditioning system 

without a filter may cause damage 

to the system.

■

To prevent damage to the fil-

ter cover

When moving the filter cover in 

the direction of arrow to release 

the fitting, pay attention not to 

apply excessive force to the 

claws. Otherwise, the claws may 

be damaged.

Cleaning the traction 

battery air intake 

vents and filters

To prevent the fuel economy 
from being affected, visually 
inspect the traction battery 
air intake vents periodically 
for dust and clogs. If it is 
dusty or clogged or if 
“Maintenance Required for 
Traction Battery Cooling 
Parts See Owner’s Manual” 
is shown on the multi-infor-
mation display, clean the air 
intake vents using the fol-
lowing procedures:

Cleaning the air intake 
vents

423

7-3. Do-it-yourself maintenance

Owners Manual_USA_M62102_en

7

Maintena

nce
 a

nd ca

re

If dust and clogs cannot be com-
pletely removed with the air 
intake vent cover installed, 
remove the cover and clean the 
filter.

1

Remove the grill.

2

Remove the filter.

3

Remove any dust and clogs 
from the filter using a vacuum 
cleaner, etc.

Make sure to also remove dust and 

clogs from the inner side of the air 

intake vent grille.
If the filter is damaged, have it 

replaced by your Toyota dealer.

4

Reinstall the filter to the grill.

5

Install the grill.

■

Scheduled maintenance of the 

air intake vent is necessary 

when

In some situations such as when the 

vehicle is used frequently or in 

heavy traffic or dusty areas, the air 

intake vent may need to be cleaned 

more regularly. For details, refer to 

the “Warranty and Service Guide”, 

“Owner’s Manual Supplement” or 

“Scheduled Maintenance”.

If dust and clogs cannot 
be completely removed

424

7-3. Do-it-yourself maintenance

Owners Manual_USA_M62102_en

■

Cleaning the air intake vents

●

Dust in the air intake vents may 

interfere with the cooling of the 

traction battery. If charging/dis-

charging of the traction battery 

becomes limited, the distance that 

the vehicle can be driven using 

the electric motor may be reduced 

and the fuel economy may be 

reduced. Inspect and clean the air 

intake vents periodically.

●

Improper handling of the air intake 

vent covers and filters may result 

in damage to them. If you have 

any concerns about cleaning the 

filter, contact your Toyota dealer.

■

If “Maintenance Required for 

Traction Battery Cooling Parts 

See Owner’s Manual” is shown 

on the multi-information display

●

If this warning message is shown 

on the multi-information display, 

remove the air intake vent covers 

and clean the filters. (



P.455)

●

After cleaning the air intake vents, 

start the fuel cell system and 

check that the warning message 

is no longer shown.

It may take approximately 20 min-

utes after the fuel cell system is 

started until the warning message 

disappears. If the warning message 

does not disappear, have the vehi-

cle inspected by your Toyota dealer.

WARNING

■

When cleaning the air intake 

vents

●

Do not use water or other liq-

uids to clean the air intake 

vents. If water is applied to the 

traction battery or other compo-

nents, a malfunction or fire may 

occur.

●

Before cleaning the air intake 

vents, make sure to turn the 

power switch off to stop the fuel 

cell system.

■

When removing the air intake 

vent covers

Do not touch the service plug 

located near the air intake vents. 

(



P.78)

NOTICE

■

When cleaning the air intake 

vents

When cleaning the air intake 

vents, make sure to only use a 

vacuum to suck out dust and 

clogs. If a compressed air blow 

gun, etc. is used to blow out dust 

and clogs, the dust or clogs may 

be pushed into the air intake 

vents, which may affect the per-

formance of the traction battery 

and cause a malfunction.

■

To prevent damage to the 

vehicle

●

Do not allow water or foreign 

matter to enter the air intake 

vent when the cover is 

removed.

●

Carefully handle the removed 

filter so that it will not be dam-

aged. If the filter is damaged, 

have it replaced with a new filter 

by your Toyota dealer.

●

Make sure to reinstall the filter 

and cover to their original posi-

tions after cleaning.

●

Do not install anything to the air 

intake vent other than the exclu-

sive filter for this vehicle or use 

the vehicle without the filter 

installed.

425

7-3. Do-it-yourself maintenance

Owners Manual_USA_M62102_en

7

Maintena

nce
 a

nd ca

re

■

If the electronic key battery is 

depleted

The following symptoms may occur:

●

The smart key system and wire-

less remote control will not func-

tion properly.

●

The operational range will be 

reduced.



Flathead screwdriver



Small flathead screwdriver



Lithium battery CR2032

■

Use a CR2032 lithium battery

●

Batteries can be purchased at 

your Toyota dealer, local electrical 

appliance shops or camera stores.

●

Replace only with the same or 

equivalent type recommended by 

the manufacturer.

●

Dispose of used batteries accord-

ing to local laws.

NOTICE

■

If “Maintenance Required for 

Traction Battery Cooling 

Parts See Owner’s Manual” is 

shown on the multi-informa-

tion display

If the vehicle is continuously 

driven with the warning message 

(indicating that charging/discharg-

ing of the traction battery may 

become limited) displayed, the 

traction battery may malfunction. 

If the warning message is dis-

played, clean the air intake vents 

immediately.

Electronic key battery

Replace the battery with a 
new one if it is depleted.
As the key may be damaged 
if the following procedure is 
not performed properly, it is 
recommended that key bat-
tery replacement be per-
formed by your Toyota 
dealer.

Items to prepare

426

7-3. Do-it-yourself maintenance

Owners Manual_USA_M62102_en

1

Take out the mechanical key.

2

Remove the cover.

To prevent damage to the key, 

cover the tip of the flathead screw-

driver with a tape.

3

Remove the depleted battery.

Insert a new battery with the “+” ter-

minal facing up.

Replacing the battery

WARNING

■

Removed battery and other 

parts

These parts are small and if swal-

lowed by a child, they can cause 

choking. Keep away from chil-

dren. Failure to do so could result 

in death or serious injury.

NOTICE

■

When replacing the battery

Use a flathead screwdriver of 

appropriate size. Applying exces-

sive force may deform or damage 

the cover.

■

For normal operation after 

replacing the battery

Observe the following precautions 

to prevent accidents:

●

Always work with dry hands.

Moisture may cause the battery 

to rust.

●

Do not touch or move any other 

component inside the remote 

control.

●

Do not bend either of the battery 

terminals.

427

7-3. Do-it-yourself maintenance

Owners Manual_USA_M62102_en

7

Maintena

nce
 a

nd ca

re

1

Turn the power switch off.

2

Open the fuse box cover.



Fuel cell unit compartment: 
type A fuse box

Push the tabs in and lift the lid off.



Fuel cell unit compartment: 
type B fuse box

Remove the fuel cell unit compart-
ment cover (



P.398) and push the 

tabs in and lift the lid off.



Driver’s side instrument panel

Push the tab in and remove the lid.
Make sure to push the tab in during 
removal or installation.



Passenger’ side instrument 
panel

Remove the cover.

Checking and replac-

ing fuses

If any of the electrical com-
ponents do not operate, a 
fuse may have blown. If this 
happens, check and replace 
the fuses as necessary.

Checking and replacing 
fuses

428

7-3. Do-it-yourself maintenance

Owners Manual_USA_M62102_en

Remove the footwell lights connec-
tor.

Remove the lid.
Make sure to push the claw when 
removing/installing the lid.



Trunk

Remove the luggage mat, and then 
remove the luggage under tray. 
(



P.354)

Push the tab in and lift the lid off.

3

Remove the fuse with the 
pullout tool.
Only type A fuse can be 

429

7-3. Do-it-yourself maintenance

Owners Manual_USA_M62102_en

7

Maintena

nce
 a

nd ca

re

removed using the pullout 
tool.

4

Check if the fuse is blown.

Type A and B:

Replace the blown fuse with a new 

fuse of an appropriate amperage 

rating. The amperage rating can be 

found on the fuse box lid.
Type C and D:

Contact your Toyota dealer.



Type A

Normal fuse

Blown fuse



Type B

Normal fuse

Blown fuse



Type C

Normal fuse

Blown fuse



Type D

Normal fuse

Blown fuse

■

After a fuse is replaced

●

When installing the lid, make sure 

that the tab is installed securely.

●

If the lights do not turn on even 

after the fuse has been replaced, 

a bulb may need replacement.

●

If the replaced fuse blows again, 

have the vehicle inspected by 

your Toyota dealer.

■

If there is an overload in a cir-

cuit

The fuses are designed to blow, pro-

430

7-3. Do-it-yourself maintenance

Owners Manual_USA_M62102_en

tecting the wiring harness from 

damage.

Adjustment bolt A

Adjustment bolt B



Make sure the vehicle has a 
full tank of fuel and the area 
around the headlight is not 
deformed.



Park the vehicle on level 
ground.



Make sure the tire inflation 
pressure is at the specified 
level.



Have someone sit in the 
driver’s seat.



Bounce the vehicle several 
times.

WARNING

■

To prevent system break-

downs and vehicle fire

Observe the following precau-

tions.

Failure to do so may cause dam-

age to the vehicle, and possibly a 

fire or injury.

●

Never use a fuse of a higher 

amperage rating than that indi-

cated, or use any other object in 

place of a fuse.

●

Always use a genuine Toyota 

fuse or equivalent.

Never replace a fuse with a 

wire, even as a temporary fix.

●

Do not modify the fuses or fuse 

boxes.

NOTICE

■

Before replacing fuses

Have the cause of electrical over-

load determined and repaired by 

your Toyota dealer as soon as 

possible.

Headlight aim

Vertical movement adjust-
ing bolts

Before checking the head-
light aim

431

7-3. Do-it-yourself maintenance

Owners Manual_USA_M62102_en

7

Maintena

nce
 a

nd ca

re

1

Using a Phillips-head screw-
driver, turn bolt A in either 
direction.
Remember the turning direc-
tion and the number of turns.

2

Turn bolt B the same number 
of turns and in the same 
direction as step 

1

.

If the headlight cannot be adjusted 

using this procedure, take the vehi-

cle to your Toyota dealer to adjust 

the headlight aim.

■

LED Lights

The lights consist of a number of 

LEDs. If any of the LEDs burn out, 

take your vehicle to your Toyota 

dealer to have the light replaced.

■

Condensation build-up on the 

inside of the lens

Temporary condensation build-up 

on the inside of the headlight lens 

does not indicate a malfunction. 

Contact your Toyota dealer for more 

information in the following situa-

tions:

●

Large drops of water have built up 

on the inside of the lens.

●

Water has built up inside the 

headlight.

Adjusting the headlight 
aim

Light bulbs

If any lights burn out, have it 
replaced by your Toyota 
dealer.

432

7-3. Do-it-yourself maintenance

Owners Manual_USA_M62102_en

433

Owners Manual_USA_M62102_en

8

8

Whe

n tr

ouble

 a

rises

When trouble arises

8-1. Essential information

Emergency flashers ....

434

If your vehicle has to be 

stopped in an emergency

..................................

434

If the vehicle is trapped in 

rising water................

435

8-2. Steps to take in an emer-

gency

If your vehicle needs to be 

towed.........................

437

If you think something is 

wrong ........................

441

If a warning light turns on or 

a warning buzzer sounds

..................................

443

If a warning message is dis-

played........................

453

If you have a flat tire....

457

If the fuel cell system will not 

start ...........................

468

If you lose your keys ...

469

If the fuel door cannot be 

opened ......................

470

If the electronic key does 

not operate properly ..

470

If the 12-volt battery is dis-

charged .....................

473

If your vehicle overheats

..................................

478

If the vehicle becomes stuck

..................................

482

434

8-1. Essential information

Owners Manual_USA_M62102_en

8-1.Essential information

Press the switch to flash all of 
the turn signal lights.

To turn them off, press the switch 
once again.

■

Emergency flashers

●

If the emergency flashers are 

used for a long time while the fuel 

cell system is not operating (while 

the “READY” indicator is not illu-

minated), the 12-volt battery may 

discharge.

●

If any of the SRS airbags deploy 

(inflate) or in the event of a strong 

rear impact, the emergency flash-

ers will turn on automatically. 

The emergency flashers will turn 

off automatically after operating 

for approximately 20 minutes. To 

manually turn the emergency 

flashers off, press the switch 

twice. 

(The emergency flashers may not 

turn on automatically depending 

on the force of the impact and 

conditions of the collision.)

1

Steadily step on the brake 
pedal with both feet and 
firmly depress it.

Do not pump the brake pedal 

repeatedly as this will increase the 

effort required to slow the vehicle.

2

Shift the shift position to N.



If the shift position is shifted to 
N

3

After slowing down, stop the 
vehicle in a safe place by the 
road.

4

Stop the fuel cell system.



If the shift position cannot be 
shifted to N

3

Keep depressing the brake 
pedal with both feet to reduce 
vehicle speed as much as 
possible.

4

To stop the fuel cell system, 
press and hold the power 
switch for 2 consecutive sec-
onds or more, or press it 

Emergency flashers

The emergency flashers are 
used to warn other drivers 
when the vehicle has to be 
stopped on the road due to 
a breakdown, etc.

Operating instructions

If your vehicle has to 

be stopped in an emer-

gency

Only in an emergency, such 
as if it becomes impossible 
to stop the vehicle in the 
normal way, stop the vehicle 
using the following proce-
dure:

Stopping the vehicle

435

8-1. Essential information

Owners Manual_USA_M62102_en

8

Whe

n tr

ouble

 a

rises

briefly 3 times or more in suc-
cession.

5

Stop the vehicle in a safe 
place by the road.



Remove the seat belt first.



If the door can be opened, 
open the door and exit the 
vehicle.



If the door can not be opened, 
open the window using the 
power window switch and exit 
the vehicle through the win-
dow.



If the window can not be 
opened using the power win-
dow switch, remain calm, wait 
until the water level inside the 
vehicle rises to the point that 
the water pressure inside of 
the vehicle equals the water 
pressure outside of the vehi-
cle, and then open the door 
and exit the vehicle.

WARNING

■

If the fuel cell system has to 

be turned off while driving

Power assist for the steering 

wheel will be lost, making the 

steering wheel heavier to turn. 

Decelerate as much as possible 

before turning off the fuel cell sys-

tem.

If the vehicle is 

trapped in rising water

In the event the vehicle is 
submerged in water, remain 
calm and perform the fol-
lowing.

436

8-1. Essential information

Owners Manual_USA_M62102_en

WARNING

■

Using an emergency hammer

*

 

for emergency escape

The front side windows and rear 

side windows, as well as the rear 

window can be shattered with an 
emergency hammer

*

 used for 

emergency escape.
However, an emergency hammer 

cannot shatter the windshield as it 

is laminated glass.

*

: Contact your Toyota dealer or 

aftermarket accessory manu-
facturer for further information 
about an emergency hammer.

■

Escaping the vehicle from the 

window

There are cases where escaping 

the vehicle from the window is not 

possible due to seating position, 

passenger body type, etc.

When using an emergency ham-

mer, consider your seat location 

and the size of the window open-

ing to ensure that the opening is 

accessible and large enough to 

escape.

437

8-2. Steps to take in an emergency

Owners Manual_USA_M62102_en

8

Whe

n tr

ouble

 a

rises

8-2.Steps to take in an emergency

If your vehicle needs 

to be towed

If towing is necessary, we 
recommend having your 
vehicle towed by your Toy-
ota dealer or commercial 
towing service, using a 
wheel-lift type truck or flat-
bed truck.

Use a safety chain system 
for all towing, and abide by 
all state/provincial and local 
laws.

WARNING

Observe the following precau-

tions.

Failure to do so may result in 

death or serious injury.

■

When towing the vehicle

Be sure to transport the vehicle 

with all four wheels raised off the 

ground. If the vehicle is towed 

with the tires contacting the 

ground, the drivetrain and related 

parts may be damaged, an acci-

dent may occur due to a change 

in direction of the vehicle or elec-

tricity generated by the operation 

of the motor may cause a fire to 

occur depending on the nature of 

the damage or malfunction.

■

While towing

●

When towing using cables or 

chains, avoid sudden starts, etc. 

which place excessive stress on 

the towing eyelets, cables or 

chains. The towing eyelets, 

cables or chains may become 

damaged, broken debris may hit 

people, and cause serious dam-

age.

●

Do not perform any of the fol-

lowing as doing so may cause 

the parking lock mechanism to 

engage, locking the rear wheels 

and possibly leading to an acci-

dent resulting in death or seri-

ous injury:

• Unfasten the driver’s seat belt 

and open the driver’s door.

438

8-2. Steps to take in an emergency

Owners Manual_USA_M62102_en

In the following situations, it is 
not possible to be towed by 

another vehicle using cables or 
chains, as the rear wheels may 
be locked due to the parking 
lock. Contact your Toyota dealer 
or commercial towing service.



There is a malfunction in the 
shift control system. (



P.453)



There is a malfunction in the 
immobilizer system. (



P.69)



There is a malfunction in the 
smart key system. (



P.470)



The 12-volt battery is dis-
charged. (



P.473)

The following may indicate a 
problem with your transmission. 
Contact your Toyota dealer or 
commercial towing service 
before towing.



The fuel cell system warning 
message is shown on the 
multi-information display and 
the vehicle does not move.



The vehicle makes an abnor-
mal sound.

WARNING

• Turn the power switch off.

■

Installing towing eyelets to 

the vehicle

Make sure that towing eyelets are 

installed securely.

If not securely installed, towing 

eyelets may come loose during 

towing.

NOTICE

■

To prevent damage to the 

vehicle when towing using a 

wheel-lift type truck

●

Do not tow the vehicle from the 

rear when the power switch is 

off. The steering lock mecha-

nism is not strong enough to 

hold the front wheels straight.

●

When raising the vehicle, 

ensure adequate ground clear-

ance for towing at the opposite 

end of the raised vehicle. With-

out adequate clearance, the 

vehicle could be damaged while 

being towed.

■

To prevent damage to the 

vehicle when towing with a 

sling-type truck

Do not tow with a sling-type truck, 

either from the front or rear.

■

To prevent damage to the 

vehicle during emergency 

towing

Do not secure cables or chains to 

the suspension components.

Situations when it is not 
possible to be towed by 
another vehicle

Situations when it is nec-
essary to contact dealers 
before towing

439

8-2. Steps to take in an emergency

Owners Manual_USA_M62102_en

8

Whe

n tr

ouble

 a

rises



From the front

Use a towing dolly under the 
rear wheels.



From the rear

Use a towing dolly under the 
front wheels.

■

Towing with a sling-type truck

Do not tow with a sling-type truck to 

prevent body damage.

When using a flat-bed truck to 
transport the vehicle, use tire 
strapping belts. Refer to the 
owner’s manual of the flat-bed 
truck for the tire strapping 
method.
In order to suppress vehicle 
movement during transporta-
tion, set the parking brake and 
turn the power switch off.

If a tow truck is not available in 
an emergency, your vehicle may 
be temporarily towed using 
cables or chains secured to the 
emergency towing eyelets. This 
should only be attempted on 
hard surfaced roads for short 
distances at under 18 mph (30 
km/h).
A driver must be in the vehicle to 
steer and operate the brakes. 
The vehicle’s wheels, drive train, 
axles, steering and brakes must 
be in good condition.

To have your vehicle towed by 
another vehicle, the towing eye-
let must be installed to your 
vehicle. Install the towing eyelet 
using the following procedure.

Towing with a wheel-lift 
type truck

Using a flatbed truck

Emergency towing

Emergency towing proce-
dure

440

8-2. Steps to take in an emergency

Owners Manual_USA_M62102_en

1

Take out the phillips-head 
screwdriver and towing eye-
let.

Phillips-head screwdriver

Towing eyelet

2

Remove the eyelet cover 
using a flathead screwdriver.

To protect the bodywork, place a 

rag between the screwdriver and 

the vehicle body as shown in the 

illustration.

3

Insert the towing eyelet into 
the hole and tighten partially 
by hand.

4

Tighten down the towing eye-
let securely using a phillips-
head screwdriver, wheel nut 
wrench

*

 or hard metal bar.

*

: Wheel nut wrench is not installed 

in your vehicle, can be purchased 
at your Toyota dealer.

5

Securely attach cables or 
chains to the towing eyelet.

Take care not to damage the vehi-

cle body.

6

Enter the vehicle being towed 
and start the fuel cell system.

If the fuel cell system does not 

start, turn the power switch to ON.

7

Shift the shift position to N 
and release the parking 
brake.

Turn automatic mode off. (



P.185)

441

8-2. Steps to take in an emergency

Owners Manual_USA_M62102_en

8

Whe

n tr

ouble

 a

rises

■

While towing

If the fuel cell system is off, the 

power assist for the brakes and 

steering will not function, making 

steering and braking more difficult.

■

Wheel nut wrench

Wheel nut wrench can be pur-

chased at your Toyota dealer.

■

Before transporting or towing in 

frozen areas

Operate the water release function. 

Otherwise, the fuel cell system may 

freeze and the vehicle may not be 

able to be started. (



P.190)



Fluid leaks under the vehicle.
(Water dripping from the air 
conditioning after use is nor-
mal.)



Flat-looking tires or uneven 
tire wear



The high coolant temperature 
gauge needle continually 
points higher than normal.



Hydrogen gas leakage noises 
can be heard. (



P.84)



Excessive tire squeal when 
cornering



Strange noises related to the 
suspension system



Other noises related to the 
fuel cell system



Stumbling or running roughly



Appreciable loss of power



Vehicle pulls heavily to one 

If you think something 

is wrong

If you notice any of the fol-
lowing symptoms, your 
vehicle probably needs 
adjustment or repair. Con-
tact your Toyota dealer as 
soon as possible.

Visible symptoms

Audible symptoms

Operational symptoms

442

8-2. Steps to take in an emergency

Owners Manual_USA_M62102_en

side when braking



Vehicle pulls heavily to one 
side when driving on a level 
road



Loss of brake effectiveness, 
spongy feeling, pedal almost 
touches the floor

443

8-2. Steps to take in an emergency

Owners Manual_USA_M62102_en

8

Whe

n tr

ouble

 a

rises

■

Hydrogen leak warning light (warning buzzer)

■

Brake system warning light (warning buzzer)

■

Brake system warning light (warning buzzer)

If a warning light turns on or a warning buzzer 

sounds

Calmly perform the following actions if any of the warning 
lights comes on or flashes. If a light comes on or flashes, but 
then goes off, this does not necessarily indicate a malfunc-
tion in the system. However, if this continues to occur, have 
the vehicle inspected by your Toyota dealer.

Actions to the warning lights or warning buzzers

Warning light

Details/Actions

When a hydrogen gas leak is detected, a buzzer sounds, a 
light comes on, and a warning message is displayed on the 
multi-information display.



P.87

Warning light

Details/Actions

(U.S.A.)

or

(Red)

(Canada)

Indicates that:



The brake fluid level is low; or



The brake system is malfunctioning



Immediately stop the vehicle in a safe place and con-
tact your Toyota dealer. Continuing to drive the vehi-
cle may be dangerous.

Indicates that the brake pads are worn out (only the right-
side pads can be detected)



Have the vehicle inspected by your Toyota dealer.

Warning light

Details/Actions

(Yellow)

Indicates a malfunction in:



The regenerative braking system;



The electronically controlled brake system; or



The parking brake system



Have the vehicle inspected by your Toyota dealer 
immediately.

444

8-2. Steps to take in an emergency

Owners Manual_USA_M62102_en

■

High coolant temperature warning light

*

*

: This light illuminates on the multi-information display.

■

Fuel cell system overheat warning light

*

 (warning buzzer)

*

: This light illuminates on the multi-information display.

■

Charging system warning light

*

 (warning buzzer)

*

: This light illuminates on the multi-information display.

■

SRS warning light

Warning light

Details/Actions

(Red)

Indicates that the coolant temperature is too high



Immediately stop the vehicle in a safe place.
Handling method (



P.478)

Warning light

Details/Actions

Indicates the fuel cell system has overheated



Stop the vehicle in a safe place.
Handling method (



P.478)

Warning light

Details/Actions

Indicates a malfunction in the vehicle’s charging system



Immediately stop the vehicle in a safe place and con-
tact your Toyota dealer.

Warning light

Details/Actions

Indicates a malfunction in:



The SRS airbag system;



The front passenger occupant classification system; or



The seat belt pretensioner system



Have the vehicle inspected by your Toyota dealer 
immediately.

445

8-2. Steps to take in an emergency

Owners Manual_USA_M62102_en

8

Whe

n tr

ouble

 a

rises

■

Pop Up Hood warning light

■

ABS warning light

■

Electric power steering system warning light (warning 
buzzer)

Warning light

Details/Actions

Indicates that the Pop Up Hood system has operated



The Pop Up Hood system cannot be reused once it 
has operated. Have it replaced by your Toyota dealer.

Indicates a malfunction in the Pop Up Hood system



Have the vehicle inspected by your Toyota dealer 
immediately.

Warning light

Details/Actions

(U.S.A.)

or

(Canada)

Indicates a malfunction in:



The ABS; or



The brake assist system



Have the vehicle inspected by your Toyota dealer 
immediately.

Warning light

Details/Actions

(Red)

or

(Yellow)

Indicates a malfunction in the EPS (Electric Power Steer-
ing) system



Have the vehicle inspected by your Toyota dealer 
immediately.

446

8-2. Steps to take in an emergency

Owners Manual_USA_M62102_en

■

PCS warning light

■

LTA indicator

*

 (warning buzzer)

*

: This light illuminates on the multi-information display.

■

Intuitive parking assist OFF indicator (warning buzzer)

Warning light

Details/Actions

(Flashes or illu-

minates)

When a buzzer sounds simultaneously:
Indicates a malfunction has occurred in the PCS (Pre-Colli-
sion System).



Have the vehicle inspected by your Toyota dealer 
immediately.

When a buzzer does not sound:
The PCS (Pre-Collision System) has become temporarily 
unavailable, corrective action may be necessary.



Follow the instructions displayed on the multi-infor-
mation display. (



P.210, 453)

If the PCS (Pre-Collision System) or VSC (Vehicle Stability 
Control) system is disabled, the PCS warning light will illu-
minate.



P.317

Warning light

Details/Actions

(Orange)

Indicates a malfunction in the LTA (Lane Tracing Assist)



Follow the instructions displayed on the multi-infor-
mation display. (



P.233)

Warning light

Details/Actions

(Flashes)

(If equipped)

Indicates a malfunction in the intuitive parking assist func-
tion



Have the vehicle inspected by your Toyota dealer 
immediately.

Indicates that the system is temporarily unavailable, possi-
bly due to a sensor being dirty or covered with ice, etc.



Follow the instructions displayed on the multi-infor-
mation display. (



P.256)

447

8-2. Steps to take in an emergency

Owners Manual_USA_M62102_en

8

Whe

n tr

ouble

 a

rises

■

PKSB OFF indicator (warning buzzer)

■

RCTA OFF indicator (warning buzzer)

■

RCD OFF indicator

*

 (warning buzzer)

*

: This light illuminates on the multi-information display.

Warning light

Details/Actions

(Flashes)

(If equipped)

When a buzzer sounds:
Indicates a malfunction in the PKSB (Parking Support 
Brake) system



Have the vehicle inspected by your Toyota dealer 
immediately.

When a buzzer does not sound:
Indicates that the system is temporarily unavailable, possi-
bly due to a sensor being dirty or covered with ice, etc.



Follow the instructions displayed on the multi-infor-
mation display. (



P.277)

Warning light

Details/Actions

(Flashes)

(If equipped)

Indicates a malfunction in the RCTA (Rear Cross Traffic 
Alert) function



Have the vehicle inspected by your Toyota dealer 
immediately.

Indicates that the rear bumper around the radar sensor is 
covered with dirt, etc. (



P.250)



Follow the instructions displayed on the multi-infor-
mation display. (



P.264)

Warning light

Details/Actions

(Flashes)

(If equipped)

When a buzzer sounds:
Indicates a malfunction in the RCD (Rear Camera Detec-
tion) function



Have the vehicle inspected by your Toyota dealer 
immediately.

When a buzzer does not sound:
Indicates that the function temporarily cannot be used due 
to the camera being dirty, etc.



Follow the instructions displayed on the multi-infor-
mation display. (



P.271)

448

8-2. Steps to take in an emergency

Owners Manual_USA_M62102_en

■

Slip indicator light

■

Brake Override System/Drive-Start Control warning light

*

 

(warning buzzer)

*

: This light illuminates on the multi-information display.

■

Brake hold operated indicator (warning buzzer)

Warning light

Details/Actions

Indicates a malfunction in:



The VSC system;



The TRAC system; or



The hill-start assist control system



Have the vehicle inspected by your Toyota dealer 
immediately.

Warning light

Details/Actions

When a buzzer sounds:
Indicates a malfunction in:



The Brake Override System



The Drive-Start Control



Have the vehicle inspected by your Toyota dealer 
immediately.

Indicates that the shift position was changed and Drive-
Start Control was operated while depressing the accelerator 
pedal.



Momentarily release the accelerator pedal.

When a buzzer does not sound:
Indicates that the accelerator and brake pedals are being 
depressed simultaneously, and the Brake Override System 
is operating.



Release the accelerator pedal and depress the brake 
pedal.

Warning light

Details/Actions

(Flashes)

Indicates a malfunction in the brake hold system



Have the vehicle inspected by your Toyota dealer 
immediately.

449

8-2. Steps to take in an emergency

Owners Manual_USA_M62102_en

8

Whe

n tr

ouble

 a

rises

■

Parking brake indicator (warning buzzer)

■

Tire pressure warning light

■

Low fuel level warning light

*

*

: This light illuminates on the multi-information display.

Warning light

Details/Actions

(Flashes)

(U.S.A.)

or

(Flashes)
(Canada)

Indicates a malfunction in the parking brake system



Have the vehicle inspected by your Toyota dealer 
immediately.

Warning light

Details/Actions

When the light comes on after blinking for approximately 1 
minute:
Malfunction in the tire pressure warning system



Have the system checked by your Toyota dealer.

When the light comes on:
Low tire inflation pressure such as



Natural causes



Flat tire



Immediately stop the vehicle in a safe place.
Handling method (



P.451)

Warning light

Details/Actions

Indicated the remain fuel is approximately 12% or less



Refuel the vehicle.

450

8-2. Steps to take in an emergency

Owners Manual_USA_M62102_en

■

Driver’s and front passenger’s seat belt reminder light (warn-
ing buzzer)

*

*

: Driver’s seat belt warning buzzer:

The driver’s seat belt warning buzzer sounds to alert the driver that his or 
her seat belt is not fastened. Once the power switch is turned to ON, the 
buzzer sounds. If the seat belt is still unfastened, the buzzer sounds inter-
mittently for a certain period of time after the vehicle reaches a certain 
speed.
Front passenger’s seat belt warning buzzer:
The front passenger’s seat belt warning buzzer sounds to alert the front 
passenger that his or her seat belt is not fastened. If the seat belt is 
unfastened, the buzzer sounds intermittently for a certain period of time 
after the vehicle reaches a certain speed.

■

Rear passengers’ seat belt reminder lights

*1

 (warning 

buzzer)

*2

*1

:This light illuminates on the multi-information display.

*2

:Rear passengers’ seat belt warning buzzer:

The rear passengers’ seat belt warning buzzer sounds to alert the rear 
passenger that his or her seat belt is not fastened. If the seat belt is 
unfastened, the buzzer sounds intermittently for a certain period of time, 
after the seat belt is fastened and unfastened and the vehicle reaches a 
certain speed.

■

Warning buzzer

In some cases, the buzzer may not 

be heard due to being in a noisy 

location or audio sound.

■

Front passenger detection sen-

sor, seat belt reminder and 

warning buzzer

●

If luggage is placed on the front 

passenger seat, the front passen-

ger detection sensor may cause 

the warning light to flash and the 

warning buzzer to sound even if a 

Warning light

Details/Actions

Warns the driver and/or front passenger to fasten their seat 
belts



Fasten the seat belt. 
If the front passenger’s seat is occupied, the front 
passenger’s seat belt also needs to be fastened to 
make the warning light (warning buzzer) turn off.

Warning light

Details/Actions

Warns the rear passengers to fasten their seat belts



Fasten the seat belt.

451

8-2. Steps to take in an emergency

Owners Manual_USA_M62102_en

8

Whe

n tr

ouble

 a

rises

passenger is not sitting in the 

seat.

●

If a cushion is placed on the seat, 

the sensor may not detect a pas-

senger, and the warning light may 

not operate properly.

■

SRS warning light

This warning light system monitors 

the airbag sensor assembly, front 

impact sensors, side impact sensors 

(front door), side impact sensors 

(front), side impact sensors (rear), 

driver’s seat position sensor, 

driver’s seat belt buckle switch, front 

passenger occupant classification 

system (ECU and sensors), “AIR-

BAG ON” indicator light, “AIRBAG 

OFF” indicator light, front passen-

ger’s seat belt buckle switch, seat 

belt pretensioners, airbags, inter-

connecting wiring and power 

sources. (



P.34)

■

Electric power steering system 

warning light (warning buzzer)

When the 12-volt battery charge 

becomes insufficient or the voltage 

temporarily drops, the electric power 

steering system warning light may 

come on and the warning buzzer 

may sound.

■

When the tire pressure warning 

light comes on

Inspect the tires to check if a tire is 

punctured.
If a tire is punctured: 



P.457

If none of the tires are punctured:

Turn the power switch off then turn it 

to ON. Check if the tire pressure 

warning light comes on or blinks.



If the tire pressure warning light 

blinks for approximately 1 minute 

then stays on

There may be a malfunction in the 

tire pressure warning system. Have 

the vehicle inspected by your Toyota 

dealer immediately.



If the tire pressure warning light 

comes on

1

After the temperature of the tires 

has lowered sufficiently, check 

the inflation pressure of each tire 

and adjust them to the specified 

level.

2

If the warning light does not turn 

off even after several minutes 

have elapsed, check that the 

inflation pressure of each tire is 

at the specified level and perform 

initialization. (



P.409)

■

The tire pressure warning light 

may come on due to natural 

causes

The tire pressure warning light may 

come on due to natural causes such 

as natural air leaks and tire inflation 

pressure changes caused by tem-

perature. In this case, adjusting the 

tire inflation pressure will turn off the 

warning light (after a few minutes).

■

Conditions that the tire pres-

sure warning system may not 

function properly



P.408

WARNING

■

If both the ABS and the brake 

system warning lights remain 

on

Stop your vehicle in a safe place 

immediately and contact your Toy-

ota dealer.

The vehicle will become 

extremely unstable during brak-

ing, and the ABS system may fail, 

which could cause an accident 

resulting in death or serious injury.

452

8-2. Steps to take in an emergency

Owners Manual_USA_M62102_en

WARNING

■

When the electric power 

steering system warning light 

comes on

When the light comes on yellow, 

the assist to the power steering is 

restricted. When the light comes 

on red, the assist to the power 

steering is lost and handling oper-

ations of the steering wheel 

become extremely heavy.

When steering wheel operations 

are heavier than usual, grip the 

steering wheel firmly and operate 

it using more force than usual.

■

If the tire pressure warning 

light comes on

Be sure to observe the following 

precautions.

Failure to do so could cause a 

loss of vehicle control and result 

in death or serious injury.

●

Check and adjust the tire infla-

tion pressure immediately.

●

If the tire pressure warning light 

comes on even after tire infla-

tion pressure adjustment, it is 

probable that you have a flat 

tire. Have the flat tire replaced 

by the nearest Toyota dealer.

●

Avoid abrupt maneuvering and 

braking.

If the vehicle tires deteriorate, 

you could lose control of the 

steering wheel or the brakes.

■

If a blowout or sudden air 

leakage should occur

The tire pressure warning system 

may not activate immediately.

■

Maintenance of the tires

Each tire, including the spare (if 

provided), should be checked 

monthly when cold and inflated to 

the inflation pressure recom-

mended by the vehicle manufac-

turer on the vehicle placard or tire 

inflation pressure label (tire and 

load information label). (If your 

vehicle has tires of a different size 

than the size indicated on the 

vehicle placard or tire inflation 

pressure label [tire and load infor-

mation label], you should deter-

mine the proper tire inflation 

pressure for those tires.)

As an added safety feature, your 

vehicle has been equipped with a 

tire pressure monitoring system 

(TPMS-tire pressure warning sys-

tem) that illuminates a low tire 

pressure telltale (tire pressure 

warning light) when one or more 

of your tires is significantly under-

inflated. Accordingly, when the 

low tire pressure telltale (tire pres-

sure warning light) illuminates, 

you should stop and check your 

tires as soon as possible, and 

inflate them to the proper pres-

sure. Driving on a significantly 

under-inflated tire causes the tire 

to overheat and can lead to tire 

failure. Under-inflation also 

reduces fuel efficiency and tire 

tread life, and may affect the vehi-

cle’s handling and stopping ability.

Please note that the TPMS (tire 

pressure warning system) is not a 

substitute for proper tire mainte-

nance, and it is the driver’s 

responsibility to maintain correct 

tire pressure, even if under-infla-

tion has not reached the level to 

trigger illumination of the TPMS 

low tire pressure telltale (tire pres-

sure warning light).

453

8-2. Steps to take in an emergency

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■

Warning messages

The warning messages explained 

below may differ from the actual 

messages according to operation 

conditions and vehicle specifica-

tions.

■

Warning buzzer

A buzzer may sound when a mes-

sage is displayed.
In some cases, the buzzer may not 

be heard due to being in a noisy 

location or audio sound.

WARNING

Your vehicle has also been 

equipped with a TPMS (tire pres-

sure warning system) malfunc-

tion indicator to indicate when the 

system is not operating properly. 

The TPMS (tire pressure warning 

system) malfunction indicator is 

combined with the low tire pres-

sure telltale (tire pressure warning 

light). When the system detects a 

malfunction, the telltale will flash 

for approximately one minute and 

then remain continuously illumi-

nated. This sequence will con-

tinue upon subsequent vehicle 

start-ups as long as the malfunc-

tion exists. When the malfunction 

indicator is illuminated, the sys-

tem may not be able to detect or 

signal low tire pressure as 

intended.

TPMS (tire pressure warning sys-

tem) malfunctions may occur for a 

variety of reasons, including the 

installation of replacement or 

alternate tires or wheels on the 

vehicle that prevent the TPMS 

(tire pressure warning system) 

from functioning properly. Always 

check the TPMS (tire pressure 

warning system) malfunction tell-

tale after replacing one or more 

tires or wheels on your vehicle to 

ensure that the replacement or 

alternate tires and wheels allow 

the TPMS (tire pressure warning 

system) to continue to function 

properly.

NOTICE

■

To ensure the tire pressure 

warning system operates 

properly

Do not install tires with different 

specifications or makers, as the 

tire pressure warning system may 

not operate properly.

If a warning message 

is displayed

The multi-information dis-
play shows warnings for 
system malfunctions and 
incorrectly performed oper-
ations, and messages that 
indicate a need for mainte-
nance. When a message is 
displayed, perform the 
appropriate corrective 
action for the message.

If a warning message is dis-
played again after the 
appropriate actions have 
been performed, contact 
your Toyota dealer.

Additionally, if a warning 
light comes on or flashes at 
the same time that a warn-
ing message is displayed, 
take the appropriate correc-
tive action for the warning 
light. (



P.443)

454

8-2. Steps to take in an emergency

Owners Manual_USA_M62102_en

■

If “FCV System Stopped Steer-

ing Power Low” is displayed

This message is displayed if the fuel 

cell system is stopped while driving.
When steering wheel operations are 

heavier than usual, grip the steering 

wheel firmly and operate it using 

more force than usual.

■

If “FCV System High Temp. FCV 

Power Reduced” or “FCV 

Power Reduced Due to Exces-

sive Acceleration” is displayed

1

Lower the speed while check the 

safety, and run the vehicle like 

this for several minutes.

2

If the message goes off, the vehi-

cle can be driven as is, since it 

temporarily overheated.

This message may be displayed 

when driving under severe operat-

ing conditions. (For example, when 

driving up a long steep hill.)

■

If “FCV Power Significantly 

Reduced” is displayed

The output power of the fuel cell 

system is greatly restrained. If it is 

displayed frequently, contact your 

Toyota dealer.

■

If “Stop Vehicle in a Safe Place 

Push P Switch” is displayed

There may be a malfunction in the 

fuel cell system or the shift position 

may be shifted to N for a long time. 

Immediately stop the vehicle and 

contact your Toyota dealer.

■

If “Shift is in N Release Acceler-

ator Before Shifting” is dis-

played

The accelerator pedal has been 

depressed when the shift position is 

in N.
Release the accelerator pedal and 

shift the shift position to D or R.

■

If “Press brake when vehicle is 

stopped FCV system may over-

heat” is displayed

The message may be displayed 

when the accelerator pedal is 

depressed to hold the vehicle while 

the vehicle is stopped on an incline, 

etc. The fuel cell system may over-

heat. Release the accelerator pedal 

and depress the brake pedal.

■

If “Auto Power OFF to Conserve 

Battery” is displayed

Power was turned off due to the 

automatic power off function. Next 

time when starting the fuel cell sys-

tem, operate the fuel cell system for 

approximately 5 minutes to 

recharge the 12-volt battery.

■

If “Headlight System Malfunc-

tion Visit Your Dealer” is dis-

played

The following systems may be mal-

functioning. Have the vehicle 

inspected by your Toyota dealer 

immediately.

●

The LED headlight system

●

The automatic headlight leveling 

system (if equipped)

●

AHB (Automatic High Beam)

■

If “Radar Cruise Control 

Unavailable See Owner’s Man-

ual” is displayed

The dynamic radar cruise control 

with full-speed range system is sus-

pended temporarily or until the prob-

lem shown in the message is 

resolved. (Causes and coping meth-

ods: 



P.210)

■

If “Radar Cruise Control 

Unavailable” is displayed

The dynamic radar cruise control 

with full-speed range system cannot 

be used temporarily. Use the system 

when it becomes available again.

■

If a message that indicates the 

malfunction of front camera is 

displayed

The following systems may be sus-

pended until the problem shown in 

the message is resolved. (



P.210, 

443)

●

PCS (Pre-Collision system)

455

8-2. Steps to take in an emergency

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●

LTA (Lane Tracing Assist)

●

Automatic High Beam

●

RSA (Road Sign Assist) (if 

equipped)

●

Dynamic radar cruise control with 

full-speed range

■

If a message that indicates the 

malfunction of radar sensor is 

displayed

The following systems may be sus-

pended until the problem shown in 

the message is resolved. (



P.210, 

443)

●

PCS (Pre-Collision system)

●

LTA (Lane Tracing Assist)

●

Dynamic radar cruise control with 

full-speed range

■

If “Shift System Malfunction 

Shifting Unavailable Drive to a 

Safe Place and Stop” or “Shift 

System Malfunction Driving 

Unavailable” is displayed

There is a malfunction in the shift 

control system. Have the vehicle 

inspected by your Toyota dealer 

immediately.

■

If a message that indicates the 

need for the shift lever opera-

tion is displayed

To prevent the shift lever from being 

operated incorrectly or the vehicle 

from moving unexpectedly, a mes-

sage that requires shifting the shift 

position may be displayed on the 

multi-information display. In that 

case, follow the instruction of the 

message and shift the shift position.

■

If a message that indicates the 

need for visiting your Toyota 

dealer is displayed

The system or part shown on the 

multi-information display is malfunc-

tioning. Have the vehicle inspected 

by your Toyota dealer immediately.

■

If a message that indicates the 

need for referring to Owner’s 

Manual is displayed

●

If any of the following messages 

are shown on the multi-informa-

tion display, it may indicate a mal-

function. Have the vehicle 

inspected by your Toyota dealer 

immediately.

• “Smart Key System Malfunction 

See Owner’s Manual”

• “P Switch Malfunction Apply Park-

ing Brake Securely When Parking 

See Owner’s Manual”

• “Shift System Malfunction Apply 

Parking Brake Securely When 

Parking See Owner’s Manual”

• “Shift System Unavailable Apply 

Parking Brake Securely When 

Parking See Owner’s Manual”

• “Shift System Malfunction See 

Owner’s Manual”

• “Shift System Malfunction Stop in 

a Safe Place See Owner’s Man-

ual”

• “Battery Low Shifting Unavailable 

See Owner’s Manual”

• “FCV system malfunction”

• “Traction battery system malfunc-

tion”

• “Accelerator System Malfunction”

●

If any of the following messages 

are shown on the multi-informa-

tion display, it may indicate a mal-

function. Immediately stop the 

vehicle and contact your Toyota 

dealer.

• “Braking Power Low Stop in a 

Safe Place See Owner’s Manual”

• “FCV System Shutdown Due to 

Hydrogen Leakage Stop in a Safe 

Place See Owner’s Manual”

●

If “FCV system stopped” is shown 

on the multi-information display, 

the vehicle may have run out of 

fuel. Stop the vehicle in a safe 

place and, if the fuel level is low, 

refuel the vehicle. (



P.80)

●

If “Low Auxiliary Battery See 

Owner’s Manual” is shown,

• When the display goes off after 

several seconds (displays for 

456

8-2. Steps to take in an emergency

Owners Manual_USA_M62102_en

about 6 seconds): Maintain the 

fuel cell system operation for more 

than 15 minutes and charge the 

12-volt battery.

• When the display does not go off: 

Start up the fuel cell system using 

the procedures: 



P.473

●

If “Maintenance Required for Trac-

tion Battery Cooling Parts See 

Owner’s Manual” is shown, the fil-

ters may be clogged, the air intake 

vents may be blocked, or there 

may be a gap in the duct. There-

fore, perform the following correc-

tion procedure.

• If the air intake vents and filters of 

the traction battery are dirty, per-

form the procedure on P.422to 

clean them.

• If the warning message is shown 

when the air intake vents and fil-

ters of the traction battery are not 

dirty, have the vehicle inspected 

by your Toyota dealer.

■

If “Ion Filter Maintenance 

Required Visit Your Dealer” is 

displayed

Ion filter replacement is necessary. 

Contact your Toyota dealer.

NOTICE

■

If “Low Auxiliary Battery See 

Owner’s Manual” is displayed 

frequently

The 12-volt battery may have 

deteriorated. As the battery may 

discharge in this state when left 

unattended, have the battery 

inspected by your Toyota dealer.

■

If “Maintenance Required For 

Traction Battery At Your 

Dealer” is displayed

This message indicates that the 

traction battery may require 

inspection or replacement. Have 

the vehicle inspected by your Toy-

ota dealer immediately.

Do not continue driving the vehi-

cle, as the fuel cell system may 

become not able to be started 

again.

457

8-2. Steps to take in an emergency

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8

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

Stop the vehicle in a safe 
place on a hard, flat surface.



Set the parking brake.



Shift the shift position to P.



Stop the fuel cell system.



Turn on the emergency flash-
ers. (



P.434)



Check the degree of the tire 
damage.

Do not remove the nail or screw 
from the tire. Removing the 
object may widen the opening 
and make emergency repair 
with the repair kit impossible.

■

A flat tire that cannot be 

repaired with the emergency 

tire puncture repair kit

In the following cases, the tire can-

not be repaired with the emergency 

tire puncture repair kit. Contact your 

Toyota dealer.

●

When the tire is damaged due to 

driving without sufficient air pres-

sure

●

When there are any cracks or 

damage at any location on the 

tire, such as on the side wall, 

except the tread

●

When the tire is visibly separated 

from the wheel

If you have a flat tire

Your vehicle is not equipped 
with a spare tire, but instead 
is equipped with an emer-
gency tire puncture repair 
kit.

A puncture caused by a nail 
or screw passing through 
the tire tread can be 
repaired temporarily using 
the emergency tire puncture 
repair kit. (The kit contains a 
bottle of sealant. The seal-
ant can be used only once 
to temporarily repair one 
tire without removing the 
nail or screw from the tire.) 
Depending on the damage, 
this kit cannot be used to 
repair the tire. (



P.457)

After temporarily repairing 
the tire with the kit, have the 
tire repaired or replaced by 
your Toyota dealer. Repairs 
conducted using the emer-
gency tire puncture repair 
kit are only a temporary 
measure. Have the tire 
repaired and replaced as 
soon as possible.

WARNING

■

If you have a flat tire

Do not continue driving with a flat 

tire.

Driving even a short distance with 

a flat tire can damage the tire and 

the wheel beyond repair, which 

could result in an accident.

Before repairing the tire

458

8-2. Steps to take in an emergency

Owners Manual_USA_M62102_en

●

When the cut or damage to the 

tread is 0.16 in. (4 mm) long or 

more

●

When the wheel is damaged

●

When two or more tires have been 

punctured

●

When more than 2 sharp objects 

such as nails or screws have 

passed through the tread on a sin-

gle tire

●

When the sealant has expired

Emergency tire puncture repair kit

Towing eyelet



Bottle

Hose

Air release cap

Location of the emergency tire puncture repair kit and 
tools

Emergency tire puncture 
repair kit components

459

8-2. Steps to take in an emergency

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Sticker



Compressor

Power plug

Air pressure gauge

Compressor switch

■

Note for checking the emer-

gency tire puncture repair kit

Check the sealant expiry date occa-

sionally.

The expiry date is shown on the bot-

tle. Do not use sealant whose expiry 

date has already passed. Other-

wise, repairs conducted using the 

emergency tire puncture repair kit 

may not be performed properly.

■

Emergency tire puncture repair 

kit

●

The emergency tire puncture 

repair kit is for filling the car tire 

with air.

●

The sealant has a limited life 

span. The expiry date is marked 

on the bottle. The sealant should 

be replaced before the expiry 

date. Contact your Toyota dealer 

for replacement.

●

The sealant stored in the emer-

gency tire puncture repair kit can 

be used only once to temporarily 

repair a single tire. If the sealant 

has been used and needs to be 

replaced, purchase a new bottle at 

your Toyota dealer. The compres-

sor is reusable.

●

The sealant can be used when the 

outside temperature is from -22°F 

(-30°C) to 140°F (60°C).

●

The kit is exclusively designed for 

size and type of tires originally 

installed on your vehicle. Do not 

use it for tires that a different size 

than the original ones, or for any 

other purposes.

●

If the sealant gets on your clothes, 

it may stain.

●

If the sealant adheres to a wheel 

or the surface of the vehicle body, 

the stain may not be removable if 

it is not cleaned at once. Immedi-

ately wipe away the sealant with a 

wet cloth.

●

During operation of the repair kit, 

a loud operation noise is pro-

duced. This does not indicate a 

malfunction.

●

Do not use to check or to adjust 

the tire pressure.

WARNING

■

Caution while driving

●

Store the repair kit in the lug-

gage compartment.

Injuries may result in the event 

of an accident or sudden brak-

ing.

●

The repair kit is exclusively only 

for your vehicle.

Do not use repair kit on other 

vehicles, which could lead to an 

accident causing death or seri-

ous injury.

●

Do not use repair kit for tires 

that are different size than the 

original ones, or for any other 

purpose. If the tires have not 

been completely repaired, it 

could lead to an accident caus-

ing death or serious injury.

460

8-2. Steps to take in an emergency

Owners Manual_USA_M62102_en

1

Remove the luggage mat. 
(



P.354)

2

Remove the band.

3

Take out the emergency tire 
puncture repair kit. (



P.458)

1

Take out the repair kit from 
the plastic bag.

2

Remove the valve cap from 
the valve of the punctured 
tire.

3

Extend the hose. Remove 
the air release cap from the 
hose.

Attach the sticker enclosed with the 

bottle on the specified locations. 

(See step 

10

.)

You will use the air release cap 

again. Therefore keep it in a safe 

place.

4

Connect the hose to the 
valve.

Screw the end of the hose clock-

WARNING

■

Precautions for use of the 

sealant

●

Ingesting the sealant is hazard-

ous to your health. If you ingest 

sealant, consume as much 

water as possible, and then 

immediately consult a doctor.

●

If sealant gets in eyes or 

adheres to skin, immediately 

wash it off with water. If discom-

fort persists, consult a doctor.

Taking out the emer-
gency tire puncture repair 
kit

Emergency repair method

461

8-2. Steps to take in an emergency

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wise as far as possible.

5

Make sure that the compres-
sor switch is off.

6

Lift the rubber stopper on the 
compressor.

7

Remove the power plug from 
the compressor.

8

Connect the power plug to 
the power outlet socket. 
(



P.364)

9

Connect the bottle to the 
compressor.

As shown in the illustration, insert 

the bottle securely into the com-

pressor until the upper side of the 

mark on the bottle is aligned with