Toyota Mirai (2020 year). Manual in english - part 7

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Air conditioning filter

Turn the power switch off.
Open  the  glove  box.  Slide  off
the damper.

Push  the  surface  on  the  left
side  of  the  glove  box  inward,
undo  the  upper  left  claw,  then
push  the  surface  on  the  right
side  of  the  glove  box  inward
and undo the upper right claw.

Lower  the  glove  box  from  the
completely open position, undo
the  lower  claws,  and  then
remove the glove box.

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

Removal method

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Remove the filter cover.

Remove the air conditioning fil-
ter  and  replace  it  with  a  new
one.

The “



UP” marks shown on the fil-

ter should be pointing up.

■

Checking interval

Inspect and replace the air conditioning  filter  according to  the  maintenance
schedule. In dusty areas or areas with heavy traffic flow, early replacement
may be required. (For scheduled maintenance information, please refer to the
“Schedule Maintenance Guide” or “Owner’s Manual Supplement”.)

■

If air flow from the vents decreases dramatically

The filter may be clogged. Check the filter and replace if necessary.

5

6

NOTICE

■

When using the air conditioning system

Make sure that a filter is always installed.
Using the air conditioning system without a filter may cause damage to the
system.

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Electronic key battery

●

Flathead screwdriver

●

Small flathead screwdriver

●

Lithium battery CR2032

Take out the mechanical key.
(



P. 129)

Remove the cover.

To  prevent  damage  to  the  key,
cover the tip of the flathead screw-
driver with a rag.

Remove the depleted battery.

Insert  a  new  battery  with  the  “+”
terminal facing up.

Replace the battery with a new one if it is depleted.

You will need the following items:

Replacing the battery

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■

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 manu-
facturer.

●

Dispose of used batteries according to local laws.

■

If the electronic key battery is depleted 

The following symptoms may occur:

●

The smart key system and wireless remote control will not function properly.

●

The operational range will be reduced.

WARNING

■

Removed battery and other parts

These parts are small and if swallowed by a child, they can cause choking.
Keep away from children. Failure to do so could result in death or serious
injury.

NOTICE

■

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.

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Checking and replacing fuses

Turn the power switch off.
Open the fuse box cover. 



Motor compartment

Push  the  tab  in  and  lift  the  lid
off.



Driver’s side instrument panel

Remove the lid.

Remove  the  fuse  with  the  pull-
out tool.

Only type A fuses can be removed
using the pullout tool.

If any of the electrical components do not operate, a fuse may
have blown. If this happens, check and replace the fuses as nec-
essary.

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Check if the fuse is blown.

Normal fuse
Blown fuse

Replace the blown fuse with a new fuse of an appropriate amperage rat-
ing. The amperage rating can be found on the fuse box lid.

4



Type A



Type B



Type C



Type D

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■

After a fuse is replaced

●

If the lights do not turn on even after the fuse has been replaced, a bulb may
need replacement. (



P. 405)

●

If the replaced fuse blows again, have the vehicle inspected by your Toyota
dealer.

■

If there is an overload in a circuit

The fuses are designed to blow, protecting the wiring harness from damage.

WARNING

■

To prevent system breakdowns and vehicle fire

Observe the following precautions.
Failure to do so may cause damage to the vehicle, and possibly a fire or
injury.

●

Never use a fuse of a higher amperage rating than that indicated, 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  overload  determined  and  repaired  by  your
Toyota dealer as soon as possible.

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Light bulbs

■

LED light bulbs

The following 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.

●

Headlight low beams

●

Headlight high beams

●

Parking lights and daytime running lights

●

Front side marker lights

●

Front turn signal lights

●

Side turn signal lights

●

Tail lights

●

Stop lights

●

Rear side marker lights

●

Rear turn signal lights

●

High mounted stop lights

●

License plate lights

●

Back-up lights

■

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 situations:

●

Large drops of water have built up on the inside of the lens.

●

Water has built up inside the headlight.

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

WARNING

■

Handling lights

Do  not  touch  the  lights  while  they  are  on  or  immediately  after  they  have
been turned off. Doing so may result in burns.

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407

8

When trouble arises

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8-1. Essential information

Emergency flashers .......... 408
If your vehicle has to 

be stopped in an 
emergency ...................... 409

If the vehicle is trapped 

in rising water.................. 410

8-2. Steps to take in an 

emergency

If your vehicle needs to 

be towed ......................... 411

If you think something is 

wrong .............................. 417

If a warning light turns on 

or a warning buzzer 
sounds ............................ 418

If a warning message is 

displayed......................... 426

If you have a flat tire.......... 432
If the fuel cell system will 

not start........................... 447

If the electronic key does 

not operate properly........ 449

If the 12-volt battery is 

discharged ...................... 452

If your vehicle overheats ... 457
If the vehicle becomes 

stuck ............................... 463

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8-1. Essential information

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Emergency flashers

Press the switch.

All the turn signal lights will flash.
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 illuminated), the 12-volt bat-
tery may discharge.

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

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If your vehicle has to be stopped in an 

emergency

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.

Shift the shift position to N.



If the shift position is shifted to N
After slowing down, stop the vehicle in a safe place by the road.
Stop the fuel cell system.



If the shift position cannot be shifted to N
Keep depressing the brake pedal with both feet to reduce vehicle
speed as much as possible.
To  stop  the  fuel  cell  system,
press  and  hold  the  power
switch  for  2  consecutive  sec-
onds or more, or press it briefly
3 times or more in succession.

Stop the vehicle in a safe place by the road.

Only in an emergency, such as if it becomes impossible to stop
the vehicle in the normal way, stop the vehicle using the follow-
ing procedure:

1

2

3

4

3

Press and hold for 2 seconds or more, 
or press briefly 3 times or more

4

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 system.

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If the vehicle is trapped in rising water

●

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 window.

●

If the window can not be opened using the power window 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 vehicle, and then open the door and exit the
vehicle.

In the event the vehicle is submerged in water, remain calm and
perform the following.

WARNING

■

Using an emergency hammer

*

 for emergency escape

The  rear  window  of  this  vehicle  can  be  shattered  by  an  emergency  ham-
mer

*

 used for emergency escape, however, since the windshield, front side

windows and rear side windows are laminated glass they can not be shat-
tered by an emergency hammer

*

.

*

: Contact your Toyota dealer or aftermarket accessory manufacturer for fur-

ther information about an emergency hammer.

■

Escaping the vehicle from the window

There are cases where escaping the vehicle from the window is not possi-
ble due to seating position, passenger body type, etc.
When  using  an  emergency  hammer,  consider  your  seat  location  and  the
size  of  the  window  opening  to  ensure  that  the  opening  is  accessible  and
large enough to escape.

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If your vehicle needs to be towed

In  the  following  situations,  it  is  not  possible  to  be  towed  by  another
vehicle using cables or chains, as the front 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. 428)

●

There is a malfunction in the immobilizer system. (



P. 78)

●

There is a malfunction in the smart key system. (



P. 449)

●

The 12-volt battery is discharged. (



P. 452)

If  towing  is  necessary,  we  recommend  having  your  vehicle
towed  by  your  Toyota  dealer  or  commercial  towing  service,
using a wheel-lift type truck or flatbed truck.
Use a safety chain system for all towing, and abide by all state/
provincial and local laws.

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

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8-2. Steps to take in an emergency

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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 shows on the multi-informa-
tion display and the vehicle does not move.

●

The vehicle makes an abnormal sound.

Do not tow with a sling-type truck
to prevent body damage.

Situations when it is necessary to contact dealers before towing

Towing with a sling-type truck

Towing with a wheel-lift type truck



From the front



From the rear

Release the parking brake.

Use  a  towing  dolly  under  the
front wheels.

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8-2. Steps to take in an emergency

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If your vehicle is transported by a
flatbed  truck,  it  should  be  tied
down at the locations shown in the
illustration.

If  you  use  chains  or  cables  to  tie
down  your  vehicle,  the  angles
shaded in black must be 45



.

Do  not  overly  tighten  the  tie
downs or the vehicle may be dam-
aged.

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 a short distance at under 18 mph (30 km/h). 
A driver must be in the vehicle to steer and operate the brakes. The
vehicle’s  wheels,  drivetrain,  axles,  steering  and  brakes  must  be  in
good condition.

Using a flatbed truck

Front

Emergency towing

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8-2. Steps to take in an emergency

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Take out the towing eyelet. (



P. 386,434)

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.

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

Tighten down the towing eyelet
securely  using  a  wheel  nut
wrench or hard metal bar.

Securely attach cables or chains to the towing eyelet.

Take care not to damage the vehicle body.

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 mode.
Turn  off  the  Parking  Support  Brake  function  (for  static  objects)  (if
equipped).: →P. 276

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

Emergency towing procedure

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

Front



Rear

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■

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 is installed in trunk. (



P. 386



434)

■

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)

WARNING

Observe the following precautions. 
Failure to do so may result in death or serious injury.

■

When towing the vehicle

■

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 damage.

●

Do not turn the power switch off. 
This  may  lead  to  an  accident  as  the  front  wheels  will  be  locked  by  the
parking lock.

■

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.

Be sure to transport the vehicle with the
front wheels raised or with all four wheels
raised  off  the  ground.  If  the  vehicle  is
towed  with  the  front  wheels  contacting
the  ground,  the  drivetrain  and  related
parts may be damaged or electricity gen-
erated by the operation of the motor may
cause  a  fire  to  occur  depending  on  the
nature of the damage or malfunction.

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NOTICE

■

To prevent damage to the vehicle when towing using a wheel-lift type
truck

When raising the vehicle, ensure adequate ground clearance for towing at
the  opposite  end  of  the  raised  vehicle.  Without  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.

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If you think something is wrong

●

Fluid leaks under the vehicle.
(Water dripping from the air conditioning after use is normal.)

●

Flat-looking tires or uneven tire wear

●

The high coolant temperature warning light flashes or comes on

●

Excessive tire squeal when cornering

●

Strange noises related to the suspension system

●

Pinging or other noises related to the fuel cell system

●

Stumbling or running roughly

●

Appreciable loss of power

●

Vehicle pulls heavily to one 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

If you notice any of the following symptoms, your vehicle proba-
bly  needs  adjustment  or  repair.  Contact  your  Toyota  dealer  as
soon as possible.

Visible symptoms

Audible symptoms

Operational symptoms

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8-2. Steps to take in an emergency

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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 malfunction in the
system.  However,  if  this  continues  to  occur,  have  the  vehicle
inspected by your Toyota dealer.

Warning light and warning buzzer list

Warning light

Warning light/Details/Actions

Hydrogen leak warning light (warning buzzer)

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. 93

(U.S.A.)

(Red) 

(Canada)

Brake system warning light (warning buzzer)

*

1

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.

Charging system warning light

Indicates a malfunction in the vehicle’s charging system



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

High coolant temperature warning light

Indicates that the coolant temperature is abnormal



P. 457



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

(Yellow)

Brake system warning light

Indicates a malfunction in:
• The regenerative braking system; or
• The electronically controlled brake system



Have  the  vehicle  inspected  by  your  Toyota  dealer
immediately.

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SRS warning light

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.

(U.S.A.)

(Canada)

ABS warning light

Indicates a malfunction in:
• The ABS; or
• The brake assist system



Have  the  vehicle  inspected  by  your  Toyota  dealer
immediately.

(Red/Yellow)

Electric  power  steering  system  warning  light  (warning
buzzer)

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



Have  the  vehicle  inspected  by  your  Toyota  dealer
immediately.

(Yellow)

LDA indicator (warning buzzer)

Indicates a malfunction in the LDA (Lane Departure Alert)



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



P. 247)

(Flashes)

PKSB OFF indicator (warning buzzer)

When a buzzer sounds:
Indicates a malfunction in the Parking Support Brake func-
tion (for static objects)



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.



Clear the dirt, etc.

When removing and installing the 12-volt battery, the sys-
tem needs to be initialized.



P. 283

Warning light

Warning light/Details/Actions

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8-2. Steps to take in an emergency

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(Flashes or 

illuminates)

PCS warning light

When a buzzer sounds simultaneously:
Indicates a malfunction has occurred in the PCS (Pre-Col-
lision 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. 224, 426)

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



P. 237

Slip indicator

Indicates a malfunction in:
• The VSC system;
• The TRAC system; or
• The hill-start assist control system
The light will flash when the ABS, VSC or TRAC

 

system is

operating.



Have  the  vehicle  inspected  by  your  Toyota  dealer
immediately.

(U.S.A.)

(Canada)

Parking brake warning light (warning buzzer)

*

2

Parking brake has not been fully released



Operate the parking brake once again.

If the light turns off after the parking brake is fully released,
the system is operating normally.

Open door warning light (warning buzzer)

*

3

Indicates that a door or the trunk is not fully closed



Check that all the doors and the trunk are closed.

Low fuel level warning light

Indicates  that  remaining  fuel  is  approximately  2.4  lb.
(1.1 kg) or less



Refuel the vehicle.

Warning light

Warning light/Details/Actions

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1

: Brake warning buzzer: 

When there is a malfunction that leads to a decline in the brake effective-
ness, a buzzer sounds while at the same time a warning light comes on.

*

2

: Parking brake engaged warning buzzer:



P. 200

*

3

: Open door warning buzzer:

A buzzer will sound if the vehicle reaches a speed of 3 mph (5 km/h) or
more with any door open.

Driver’s  and  front  passenger’s  seat  belt  reminder  light
(warning buzzer)

*

4

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.

Master warning light

A  buzzer  sounds  and  the  warning  light  comes  on  and
flashes  to  indicate  that  the  master  warning  system  has
detected a malfunction.



P. 426

Tire pressure warning light

Indicates low tire pressure due to one of the following: 

• Flat tire

• Natural causes

• The tire pressure warning system is malfunctioning



Immediately stop the vehicle in a safe place.

Handling method (



P. 423)

Brake Override System/Drive-Start Control/Parking Sup-
port Brake function (for static objects) (if equipped)

*

5

Indicates that:
• The Brake Override System is operating;
• The  Brake  Override  System  is  malfunctioning  (with

warning buzzer);

• The  Drive-Start  Control  is  operating  (with  warning

buzzer);

• The Drive-Start Control is malfunctioning (with warning

buzzer); or

• The  Parking  Support Brake  function (for static objects)

(if equipped) is operating (with warning buzzer) 
(



P. 279)



Follow the instruction that are displayed on the multi-
information display.

Warning light

Warning light/Details/Actions

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*

4

: Driver’s and front passenger’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 mode,
the buzzer sounds for 6 seconds. If the vehicle reaches a speed of 12 mph
(20 km/h), the buzzer sounds once. If the seat belt is still unfastened after
24 seconds,  the  buzzer  will sound intermittently for 10 seconds. Then, if
the seat belt is still unfastened, the buzzer will sound in a different tone for
20 more seconds.
The  front  passenger’s  seat  belt  warning  buzzer  sounds  to  alert  the  front
passenger  that  his  or  her  seat  belt  is  not  fastened.  The  buzzer  sounds
once if the vehicle reaches a speed of 12 mph (20 km/h). If the seat belt is
still  unfastened  after  24  seconds,  the  buzzer  will  sound  intermittently  for
10 seconds. Then, if the seat belt is still unfastened, the buzzer will sound
in a different tone for 20 more seconds.

*

5

: This light illuminates on the multi-information display.

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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,  “AIR  BAG  OFF”  indicator  light,  front  passen-
ger’s seat belt buckle switch, seat belt pretensioners, airbags, interconnect-
ing wiring and power sources. (



P. 38) 

■

Front  passenger  detection  sensor,  seat  belt  reminder  and  warning
buzzer

●

If luggage is placed on the front passenger seat, the front passenger detec-
tion sensor may cause the warning light to flash and the warning buzzer to
sound even if a passenger is not sitting in the seat.

●

If a cushion is placed on the seat, the sensor may not detect a passenger,
and the warning light may not operate properly.

■

Electric power steering system warning light (warning buzzer)

When the 12-volt battery charge becomes insufficient or the voltage tempo-
rarily  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 appearance of the tire to check that the tire is not punctured.

If the tire is punctured: 



P. 432

If the tire is not punctured:
After turning the power switch to off, turn it to ON mode again and make

sure the tire pressure warning light comes on or blinks.



The tire pressure warning light comes on

After the temperature of the tires have lowered sufficiently, check the
tire inflation pressure and adjust it to the specified level.
If the warning light does not go out even after several minutes, check
that the tire inflation pressure is at the specified level.

If the warning light does not go out even after several minutes, have the

vehicle inspected by your Toyota dealer immediately.



The tire pressure warning light is blinking for 1 minute, and then comes

on

Malfunction  in  the  tire  pressure  warning  system.  Have  the  system

checked by your Toyota dealer immediately.

■

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  pressure  warning  system may  not function

properly



P. 382

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■

Warning buzzer

In some cases, the buzzer may not be heard due to being in a noisy location
or audio sound.

WARNING

■

If both the ABS and the brake system warning lights remain on

Stop  your  vehicle  in  a  safe  place  immediately  and  contact  your  Toyota
dealer. The vehicle will become extremely unstable during braking, and the
ABS system may fail, which could cause an accident resulting in death or
serious injury.

■

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  operations  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

Handling method (



P. 423)

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.

●

Stop your vehicle in a safe place as soon as possible. Adjust the tire

inflation pressure immediately.

●

If the tire pressure warning light comes on even after tire inflation pres-

sure adjustment, it is probable that you have a flat tire. Check the tires.

If  a  tire  is  flat,  repair  the  flat  tire  by  using  emergency  tire  puncture

repair kit.

●

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.

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WARNING

■

Maintenance of the tires

Each tire, including the spare (if provided), should be checked monthly

when  cold  and  inflated  to  the  inflation  pressure  recommended  by  the

vehicle  manufacturer  on  the  vehicle  placard  or  tire  inflation  pressure

label (tire and load information label). (If your vehicle has tires of a dif-

ferent size than the size indicated on the vehicle placard or tire inflation

pressure  label  [tire  and  load  information  label],  you  should  determine

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 system) 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  pressure  warning  light)  illumi-

nates, you should stop and check your tires as soon as possible, and

inflate  them  to  the  proper  pressure.  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 vehicle’s handling and stopping ability.
Please note that the TPMS (tire pressure warning system) is not a sub-

stitute for proper tire maintenance, and it is the driver’s responsibility to

maintain  correct  tire  pressure,  even  if  under-inflation  has  not  reached

the level to trigger illumination of the TPMS low tire pressure telltale (tire

pressure warning light).
Your vehicle has also been equipped with a TPMS (tire pressure warn-

ing  system)  malfunction  indicator  to  indicate  when  the  system  is  not

operating properly. The TPMS (tire pressure warning system) malfunc-

tion indicator is combined with the low tire pressure 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 continue upon  subsequent vehicle  start-ups

as long as the malfunction exists. When the malfunction indicator is illu-

minated, the system may not be able to detect or signal low tire pres-

sure as intended.
TPMS (tire pressure warning system) malfunctions may occur for a vari-

ety 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  pres-

sure  warning  system)  malfunction  telltale  after  replacing  one  or  more

tires or wheels on your vehicle to ensure that the replacement or alter-

nate tires and wheels allow the TPMS (tire pressure warning system) to

continue to function properly.

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If a warning message is displayed

Multi-information display
Master warning light

The  master  warning  light  also
comes  on  or  flashes  in  order  to
indicate  that  a  message  is  cur-
rently being displayed on the multi-
information display.

If any of the warning messages are shown again after the following
actions have been performed, contact your Toyota dealer.

The warning lights and warning buzzers operate as follows depending
on the content of the message. If a message indicates the need for
inspection  by  a  dealer,  have  the  vehicle  inspected  by  your  Toyota
dealer immediately.

The  multi-information  display  shows  warnings  of  system  mal-
functions, incorrectly performed operations, and messages that
indicate  a  need  for  maintenance.  When  a  message  is  shown,
perform the correction procedure appropriate to the message.

Messages and warnings

System 

warning 

light

Warning buzzer

*

Warning

Comes 

on



Sounds

Indicates  an  important  situation,
such as when a system related to
driving  is  malfunctioning  or  that
danger may result if the correction
procedure is not performed



Comes 

on or 

flashes

Sounds

Indicates  an  important  situation,
such as when the systems shown
on  the  multi-information  display
may be malfunctioning

Flashes



Sounds

Indicates  a  situation,  such  as
when  damage  to  the  vehicle  or
danger may result

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*

: A buzzer sounds the first time a message is shown on the multi-informa-

tion display.

■

If “Visit Your Dealer” is shown

The system or part shown on the multi-information display is malfunctioning.
Have the vehicle inspected by your Toyota dealer.

■

If a message about an operation is shown

●

If a message about an operation of the accelerator pedal or brake pedal is
shown
A warning message about an operation of the brake pedal may be shown
while the driving assist systems such as PCS (Pre-Collision System) or the
dynamic radar cruise control is operating. If a warning message is shown,
be sure to decelerate the vehicle or follow an instruction shown on the multi-
information display.

●

A warning message is shown when Drive-Start Control, Brake Override Sys-
tem or Parking Support Brake function (for static objects) (if equipped) oper-
ates (



P. 173, 279). Follow the instructions on the multi-information display.

●

If a message about an operation of the power switch is shown
An instruction for operation of the power switch is shown when the incorrect
procedure for starting the fuel cell system is performed or the power switch
is operated incorrectly. Follow the instructions shown on the multi-informa-
tion display to operate the power switch again.

●

If a message about a shift operation is shown
To prevent the  shift position  from  being selected  incorrectly  or  the vehicle
from moving unexpectedly, the shift position may be changed automatically
(



P. 196) or operating the shift lever or P position switch may be required. 

In this case, change the shift position following the instructions on the multi-
information display.

●

If a message or image about an open/close state of a part or replenishment
of a consumable is shown
Confirm the part indicated by the multi-information display or a warning light,
and  then  perform  the  coping  method  such  as  closing  the  open  door  or
replenishing a consumable.

Comes 

on



Does not sound

Indicates a condition, such as mal-
function  of  electrical  components,
their  condition,  or  indicates  the
need for maintenance

Flashes



Does not sound

Indicates  a  situation,  such  as
when an  operation  has been  per-
formed  incorrectly,  or  indicates
how  to  perform  an  operation  cor-
rectly

System 

warning 

light

Warning buzzer

*

Warning

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If “High FC Temperature Reduced Power” is displayed

Lower  the  speed  while  check  the  safety,  and  run  the  vehicle  like  this  for
several minutes.
If the message goes off, the vehicle can be driven as is, since it temporarily
overheated.
This message may be displayed when driving under severe operating con-
ditions.
(For example, when driving up a long steep hill.)

■

If “FC System Shutdown due to Freezing conditions Stop Your Vehicle in
a Safe Place and Contact Your Dealer” is displayed.



P. 189

■

If  “Maintenance  Required  for  Hybrid  Battery  Cooling  Parts  at  Your
Dealer” is displayed

The filter may be clogged, the air intake vent may be blocked or there may be
a gap in the duct. Have maintenance performed on the traction battery cool-
ing component at your Toyota dealer.

■

If “Shift to P Before Exiting Vehicle” is displayed

Message  is  displayed  when  the  driver’s  door  is  opened  without  turning  the
power switch to off with the shift position in any position other than P. 
Shift the shift position to P.

■

If “Shift is in N Release Accelerator Before Shifting” is displayed

Message is displayed when the accelerator pedal has been depressed and
the shift position is in N. Release the accelerator pedal and shift the shift posi-
tion to D or R.

■

If “Press Brake When Vehicle is Stopped FC System may Overheat” is
displayed

Message is  displayed when the accelerator pedal is  depressed to maintain
the vehicle position when stopped on an upward slope, etc. 
If this continues, the fuel cell system may overheat. 
Release the accelerator pedal and depress the brake pedal.

■

If  “Accelerator  Pedal  is  Pressed  Check  The Accelerator  Pedal”  is  dis-
played

The accelerator pedal may be stuck. 
If  the  message  does  not  disappear  even  when  the  foot  has  been  removed
from the accelerator pedal, check that the accelerator pedal is not stuck.

■

If “Ion Filter Maintenance Required Visit Your Dealer” is displayed

Ion filter replacement is necessary. Contact your Toyota dealer.

■

If “Shift System Malfunction Stop Your Vehicle in a Safe Place then See
Owner’s Manual” is displayed

The shift position may not be able  to  be shifted. Stop the vehicle  in a safe
place. 
Contact your Toyota dealer immediately.

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If “Shift System Malfunction Shifting Unavailable See Owner’s Manual”
is displayed

The shift position may not be able to be shifted from P to a position other than
P. 
Contact your Toyota dealer immediately.

■

If  “Shift  System  Malfunction  When  Parking,  Apply  Parking  Brake
Securely then See Owner’s Manual” is displayed

●

The parking lock mechanism may not operate.

●

The automatically P position selection function (



P. 191) may not operate.

●

The power switch may not turn off. In that case, engage the parking brake
and the switch can be turned to off.

●

The fuel cell system may not be able to be started.

When  parking,  choose  a  flat  surface  and  be  sure  to  engage  the  parking
brake. 
Have the vehicle inspected by your Toyota dealer immediately.

■

If “[P] Switch Malfunction When Parking, Apply Parking Brake Securely
then See Owner’s Manual” is displayed

The shift position may not switch to P even though the P position switch is
pressed. 
When  parking,  choose  a  flat  surface  and  be  sure  to  engage  the  parking
brake. 
Have the vehicle inspected by your Toyota dealer immediately.

■

If “Shift System Malfunction See Owner’s Manual” is displayed

If left as is, the system may not operate properly and an unexpected hazard
or damage may occur. 
Have the vehicle inspected by your Toyota dealer immediately.

■

If “Insufficient Aux Battery Charge When Parking, Apply Parking Brake
Securely then See Owner’s Manual” is displayed

●

The parking lock mechanism may not operate.

●

The power switch may not turn off. In that case, engage the parking brake
and the switch can be turned to off.

●

Even after charging the 12-volt battery, the warning message may continue
to be displayed until the shift position is shifted from P to a position other
than P.

●

The fuel cell system may not be able to be started.

When  parking,  choose  a  flat  surface  and  be  sure  to  engage  the  parking
brake. 
Have the 12-volt battery charged or replaced.

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8-2. Steps to take in an emergency

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■

If  “Insufficient  Aux  Battery  Charge  Shift  is  Unavailable  See  Owner’s
Manual” is displayed

Due to the voltage of the 12-volt battery being in a declined condition, when
trying to shift the shift position the warning message is displayed. 
Have the 12-volt battery charged or replaced.

■

If  “Shifting  Temporarily  Unavailable  Wait  a  Moment  and  Try  Again”  is
displayed

A warning message is displayed when the shift lever and P position switch
are repeatedly operated over a short period of time. 
Shift the shift position after waiting for short amount of time.

■

If “Shifting to [Br] Mode Unavailable Shift to [D] once, then Shift to [Br]”
is displayed

When the shift position is in P or N, a warning message is displayed when try-
ing to shift to Br mode. 
Shift to Br mode after the shift position had been set to D.

■

If  “Shifted  to  [N]  Position  Shift  to  [D]  once,  then  Shift  to  [Br]”  is  dis-
played

When the shift position is in R, a warning message is displayed when trying to
shift to Br mode. 
The shift position is changed to N. 
Shift to Br Mode after the shift position has been set to D.

■

If “Shifting to [D] or [R] Position Unavailable Try to Shift after FC System
has Started” is displayed

When  the power  switch  is in ON  mode (“READY”  indicator switched  off), a
warning message is displayed when trying to shift the shift position to R or D,
or shift to Br mode. 
After starting the fuel cell system, shift the shift position to R or D, or shift to Br
mode.

■

If “Shifting Unavailable Press Brake Pedal before Shifting” is displayed

A  warning  message  is  displayed  when  attempting  to  shift  the  shift  position
without depressing the brake pedal. 
Depress the brake pedal and shift the shift position when changing it from P.

■

If “Shifted to [N] Position Stop Your Vehicle before Shifting to [D]” is dis-
played

While the vehicle is moving backward, a warning message is displayed when
attempting to shift the shift position to D. 
The shift position is changed to N. 
Shift the shift position after stopping the vehicle.

■

If “Shifted to [N] Position Stop Your Vehicle before Shifting to [R]” is dis-
played

When the vehicle is moving forward, a warning message is displayed when
attempting to shift the shift position to R. 
The shift position is changed to N. 
Shift the shift position after stopping the vehicle.

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■

If “Shifted to [N] Position To Shift to [P], Stop Your Vehicle and Press [P]
Switch” is displayed

When  the  vehicle  is  moving,  a  warning  message  is  displayed  when  the  P
position switch is operated and attempting to shift the shift position to P. 
The shift position is changed to N. 
Operate the P position switch after the vehicle has been brought to a com-
plete stop.

■

If “Smart Key System Malfunction See Owner’s Manual” is displayed



P. 145

■

If  “Front  Camera  Unavailable”  or  “Front  Camera  Unavailable  See
Owner’s Manual” is displayed

The  following  systems  may  be  suspended  until  the  problem  shown  in  the
message is resolved. (



P. 224)

●

PCS (Pre-Collision System)

●

LDA (Lane Departure Alert with steering control)

●

Automatic High Beam

●

RSA (Road Sign Assist) (if equipped)

●

Dynamic radar cruise control

■

If “Radar Cruise Control Unavailable See Owner's Manual” is shown 

The dynamic radar cruise control system is suspended temporarily or until the
problem  shown  in  the  message  is  resolved.  (causes  and  coping  methods:



P. 224)

■

If “Radar Cruise Control Unavailable” is shown 

The dynamic radar cruise control system cannot be used temporarily. Use the
system when it becomes available again. 

■

If the shift position cannot be changed or the power switch is turned to
ACCESSORY  mode  even  if  trying  to  turn  the  power  switch  off  when  a
warning message is shown

If the 12-volt battery is discharged or the shift control system is malfunction-
ing, the followings may occur.

●

The shift position may not be changed to P.
When parking, stop the vehicle on level ground and apply the parking brake
firmly.

●

The fuel cell system may not start.

●

The  power  switch  may  be  turned  to ACCESSORY  mode  even  if  trying  to
turn the power switch off.
In this case, the power switch may be turned off after applying the parking
brake.

●

The automatic P position selection function (



P. 191) may not operate.

Before turning the power switch off, be sure to press the P position switch
and check that the shift position is in P by the shift position indicator or P
position switch indicator.

■

Warning buzzer



P. 424

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If you have a flat tire

Your  vehicle  is  not  equipped  with  a  spare  tire,  but  instead  is
equipped with an emergency 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
sealant  can  be  used  only  once  to  temporarily  repair  one  tire
without removing the nail or screw from the tire.) 
After  temporarily  repairing  the  tire  with  the  repair  kit,  have  the
tire repaired or replaced by your Toyota dealer.

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, the

wheel, and other parts beyond repair, which could result in an accident.

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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 flashers. (



P. 408)

●

Check the degree of the tire damage.

A tire should only be repaired with
the  emergency  tire  puncture
repair kit if the damage is caused
by a nail or screw passing through
the tire tread.

• Do not remove the nail or screw

from  the  tire.  Removing  the
object  may  widen  the  opening
and 

disenable 

emergency

repair with the repair kit.

• To  avoid  sealant  leakage,  move  the  vehicle  until  the  area  of  the

puncture, if known, is positioned at the top of the tire.

■

A flat tire that cannot be repaired with the emergency tire puncture

repair kit

In the following cases, the tire cannot be repaired with the emergency tire

puncture repair kit. Contact your Toyota dealer.

●

When the tire is damaged due to driving without sufficient air pressure

●

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

●

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 two sharp objects such as nails or screws have passed

through the tread on a single tire

●

When the sealant has expired

Before repairing the tire

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Location of the emergency tire puncture repair kit, tools and jack

Wheel nut wrench
Towing eyelet
Emergency tire puncture 
repair kit

*

: Use of the jack (



P. 388)

Jack handle
Jack

*

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Remove the luggage mat.
Remove the jack handle.
Take  out  the  emergency  tire
puncture repair kit.

Emergency tire puncture repair kit components

Hose
Air release cap
Air pressure gauge

Compressor switch
Power plug
Stickers

Taking out the emergency tire puncture repair kit

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3

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8-2. Steps to take in an emergency

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Take out the repair kit from the plastic bag. 
Remove the valve cap from the
valve of the punctured tire.

Remove  the  air  release  cap
from the hose.

You  will  use  the  air  release  cap

again. Therefore keep it in a safe

place.

Connect the hose to the valve.

Screw the end of the hose clock-
wise as far as possible.

Make sure that the compressor
switch is off.

Emergency repair method

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Remove  the  rubber  stopper
from the compressor.

Connect  the  power  plug  to  the
power outlet socket. (



P. 331)

Connect  the  bottle  to  the  com-
pressor.

Make  sure  that  the  bottle  is
securely connected.

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7

8

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8-2. Steps to take in an emergency

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Attach the 2 stickers as shown.

Remove  any  dirt  and  moisture

from  the  wheel  before  attaching

the sticker.

Check the specified tire inflation
pressure.

Tire inflation pressure is specified

on the label as shown. (



P. 471)

Start the fuel cell system. (



P. 186)

To inject the sealant and inflate
the  tire,  turn  the  compressor
switch on. 

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12

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Inflate the tire until the specified

air pressure is reached.

The  sealant  will  be  injected
and the pressure will spike to
44 psi (300 kPa, 3.1 kgf/cm

2

or  bar)  or  58  psi  (400  kPa,
4.1 kgf/cm

2

 or bar), and then

gradually decrease.
The  air  pressure  gauge  will
display  the  actual  tire  infla-
tion pressure about 1 minute
(15  minutes  at  low  tempera-
ture)  after  the  switch  is
turned on.
Inject  to  specified  air  pres-
sure.

• Turn the compressor switch

off  and  then  check  the  tire
inflation  pressure.  Being
careful  not  to  over  inflate,
check  and  repeat  the  infla-
tion  procedure  until  the
specified  tire  inflation  pres-
sure is reached.

• If the tire inflation pressure  is still lower  than the specified point

after inflation for 10 minutes (40 minutes at low temperature) with

the  switch  on,  the  tire  is  too  damaged  to  be  repaired.  Turn  the

compressor switch off and contact your Toyota dealer.

• If the tire inflation pressure exceeds the specified air pressure, let

out some air to adjust the tire inflation pressure. (



P. 471)

13

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With the compressor switch off, disconnect the hose from the valve
on the tire and then pull out the power plug from the power outlet
socket.

Some sealant may leak when the hose is removed.

Install the valve cap onto the valve of the emergency repaired tire.

Attach the air release cap to the
end of the hose.

If  the  air  release  cap  is  not
attached,  the  sealant  may  leak
and the vehicle may get dirty.

Temporarily store the bottle in the trunk while it is connected to the
compressor.
To spread the liquid sealant evenly within the tire, immediately drive
safely for about 3 miles (5 km) below 50 mph (80 km/h).
After  driving  for  about  3  miles
(5 km),  stop  your  vehicle  in  a
safe  place  on  a  hard,  flat  sur-
face and remove the air release
cap  from  the  hose  before
reconnecting the repair kit.

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Turn the compressor switch on
and  wait  for  several  seconds,
and  then  turn  it  off.  Check  the
tire inflation pressure.

If the tire inflation pressure is
under  19  psi  (130  kPa,
1.3 kgf/cm

2

  or  bar):  The

puncture cannot be repaired.
Contact your Toyota dealer.
If the tire inflation pressure is 19 psi (130 kPa, 1.3 kgf/cm

2

 or bar)

or  higher,  but  less  than  the  specified  air  pressure:  Proceed  to
step 

.

If the tire inflation pressure is the specified air pressure: Proceed
to step 

.

Turn the compressor switch on to inflate the tire until the specified
air  pressure  is  reached.  Drive  for  about  3  miles  (5  km)  and  then
perform step 

.

Attach the air release cap to the
end of the hose.

If  the  air  release  cap  is  not
attached,  the  sealant  may  leak
and the vehicle may get dirty.

Store the bottle in the trunk while it is connected to the compressor.
Taking  precautions  to  avoid  sudden  braking,  sudden  acceleration
and sharp turns, drive carefully at under 50 mph (80 km/h) to the
nearest Toyota dealer tire repair or replacement.

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8-2. Steps to take in an emergency

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■

Emergency tire puncture repair kit

●

The sealant stored in the emergency 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 compressor is reusable.

●

The sealant can be used when the outside temperature is from -40



F

(-40



C) to 140 



F (60 



C).

●

The repair 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.

●

The sealant has a limited lifespan. The expiry date is shown on the bot-

tle. The sealant should be replaced before the expiry date. Purchase a

new bottle at your Toyota dealer for replacement.

●

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. Immediately wipe

away the sealant with a wet cloth.

●

During  operation  of  the  repair  kit,  a  loud  operation  noise  is  produced.

This does not indicate a malfunction.

●

Do not use to check or to adjust the tire pressure.

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■

If the tire is inflated to more than the specified air pressure

Disconnect the hose from the valve.

Disconnect the hose  from the valve,  remove the air  release cap from

the hose and then reconnect the hose.
Turn the compressor switch on and wait for several seconds, then turn

it off. Check that the air pressure indicator shows the specified air pres-

sure. (



P. 471)

If the air pressure is under the designated pressure, turn the compres-

sor switch on again and repeat the inflation procedure until the speci-

fied air pressure is reached.

■

After a tire is repaired with the emergency tire puncture repair kit

●

The tire pressure warning valve and transmitter should be replaced.

●

Even if the tire inflation pressure is at the recommended level, the tire

pressure warning light may come on/flash.

■

Note for checking the emergency tire puncture repair kit

Check the sealant expiry date occasionally.

The expiry date is shown on the bottle. Do not use sealant whose expiry

date has already passed. Otherwise, repairs conducted using the emer-

gency tire puncture repair kit may not be performed properly.

Install the air release cap to the end of

the  hose  and  push  the  protrusion  on

the air release cap into the tire valve

to let some air out.

WARNING

■

Caution while driving

●

Store the repair kit in the trunk. 

Otherwise, the repair kit may fly out and break in events such as sud-

den braking, and may cause an accident.

●

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 serious 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 causing death or serious injury.

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WARNING

■

Precautions for use of the sealant

●

Ingesting the sealant is hazardous 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 discomfort persists, consult a doctor.

■

When fixing the flat tire

●

Stop your vehicle in a safe and flat area.

●

Do  not  touch  the  wheels  or  the  area  around  the  brakes  immediately

after the vehicle has been driven. 

After the vehicle has been driven, the wheels and the area around the

brakes may be extremely hot. Touching these areas with hands, feet or

other body parts may result in burns.

●

Connect the valve and hose securely with the tire installed on the vehi-

cle.

●

If  the  hose  is  not  properly  connected  to  the  valve,  air  leakage  may

occur or sealant may be sprayed out.

●

Follow the operation procedure to repair the tire. If the procedures are

not followed, the sealant may spray out.

●

If the hose comes off the valve while inflating the tire, there is a risk

that the hose will move abruptly due to air pressure.

●

After inflation of the tire has completed, the sealant may splatter when

the hose is disconnected or some air is let out of the tire.

●

Keep back from the tire while it is being repaired, as there is a chance

of  it  bursting  while  the  repair  operation  is  being  performed.  If  you

notice  any  cracks  or  deformation  of  the  tire,  turn  off  the  compressor

switch and stop the repair operation immediately.

●

The repair kit may overheat if operated for a long period of time. Do not

operate the repair kit continuously for more than 40 minutes.

●

Parts of the repair kit become hot during operation. Be careful handling

the repair kit during and after operation. Do not touch the metal part

connecting the bottle and the compressor. It will be extremely hot.

●

Do not attach the vehicle speed warning sticker to an area other than

the one indicated. If the sticker is attached to an area where an SRS

airbag is located, such as the pad of the steering wheel, it may prevent

the SRS airbag from operating properly.

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WARNING

■

D

riving to spread the liquid sealant evenly

Observe the following precautions to reduce the risk of accidents. 

Failure to do so may result in a loss of vehicle control and cause death

or serious injury.

●

Drive the vehicle carefully at a low speed. Be especially careful when

turning and cornering.

●

If  the  vehicle  does  not  drive  straight  or  you  feel  a  pull  through  the

steering wheel, stop the vehicle and check the following:
• Tire condition. The tire may have separated from the wheel.

• Tire inflation pressure. If tire inflation pressure  is  19 psi (130 kPa,

1.3 kgf/cm

2

 or bar) or less, this may indicate severe tire damage.

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NOTICE

■

When performing an emergency repair

●

A tire should only be repaired with the emergency tire puncture repair

kit  if  the  damage  is  caused  by  a  sharp  object  such  as  nail  or  screw

passing through the tire tread.

Do not remove the sharp object from the tire. Removing the object may

widen the opening and disenable emergency repair with the repair kit.

●

The  repair  kit  is  not  waterproof.  Make  sure  that  the  repair  kit  is  not

exposed to water, such as when it is being used in the rain.

●

Do not put the repair kit directly onto dusty ground such as sand at the

side of the road. If the repair kit vacuums up dust etc., a malfunction

may occur.

■

Handling the emergency tire puncture repair kit

●

The  repair  kit  power  source  should  be  12  V  DC  suitable  for  vehicle

use. Do not connect the repair kit to any other source.

●

If  organic  substances  such  as  benzene  or  gasoline  splatters  on  the

repair kit, the repair kit may deteriorate. Take care not to allow organic

substances to contact it.

●

Place the repair kit in a storage to prevent it from being exposed to dirt

or water.

●

Store the repair kit in the assigned place out of reach of children.

●

Do not disassemble or modify the repair kit. Do not subject parts such

as the air pressure indicator to impacts. This may cause a malfunction.

■

To avoid damage to the tire pressure warning valves and transmit-

ters

When  a  tire  is  repaired  with  liquid  sealants,  the  tire  pressure  warning

valve  and  transmitter  may  not  operate  properly.  If  a  liquid  sealant  is

used, contact your Toyota dealer as soon as possible. After use of liquid

sealant, make sure to replace the tire pressure warning valve and trans-

mitter when repairing or replacing the tire. (



P. 379)

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If the fuel cell system will not start

One of the following may be the cause of the problem:

●

The electronic key may not be functioning properly. (



P. 449)

●

There may not be sufficient fuel in the vehicle’s tank.
Refuel the vehicle.

●

The fuel door may be open. (



P. 216)

●

There may be a malfunction in the immobilizer system. 
(



P. 78)

●

There may be a malfunction in the shift control system.

*

 (



P. 429)

●

The  fuel  cell  system  may  be  malfunctioning  due  to  an  electrical
problem such as electronic key battery depletion or a blown fuse.
However,  depending  on  the  type  of  malfunction,  an  interim  mea-
sure is available to start the fuel cell system. (



P. 191, 448)

●

The electronic key may be in battery-saving mode. (



P. 145)

*

: It may not be possible to shift the shift position from P to another position.

One of the following may be the cause of the problem:

●

The 12-volt battery may be discharged. (



P. 452)

●

The 12-volt battery terminal connections may be loose or corroded.
(



P. 374)

Reasons for the fuel cell system not starting vary depending on
the  situation.  Check  the  following  and  perform  the  appropriate
procedure:

The fuel cell system will not start even though the correct start-
ing procedure is being followed. (



P. 186)

The interior lights and headlights are dim, or the horn does not
sound or sounds at a low volume.

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One of the following may be the cause of the problem:

●

The 12-volt battery may be discharged. (



P. 452)

●

One or both of the 12-volt battery terminals may be disconnected.

Contact your Toyota dealer if the problem cannot be repaired, or if repair
procedures are unknown.

When the fuel cell system does not start, the following steps can be
used as an interim measure to start the fuel cell system if the power
switch is functioning normally.
Do not use this starting procedure except in case of emergency.

Set the parking brake.
Turn the power switch to ACCESSORY mode.
Press  and  hold  the  power  switch  for  about  15  seconds  while
depressing the brake pedal firmly.

Even if the fuel cell system can be started using the above steps, the
system  may  be  malfunctioning.  Have  the  vehicle  inspected  by  your
Toyota dealer.

The  interior  lights  and  headlights  do  not  turn  on,  or  the  horn
does not sound.

Emergency start function

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If the electronic key does not operate 

properly

■

Doors

Use the mechanical key 
(



P.  129)  in  order  to  perform

the 

following 

operations

(driver’s door only):

Locks all doors
Unlocks the door

Turning  the  key  rearward
unlocks  the  driver’s  door.  Turn-
ing  the  key  once  again  unlocks
the other doors.

■

Trunk

Turn the mechanical key clock-
wise to open.

If  communication  between  the  electronic  key  and  vehicle  is
interrupted  (



P.  146)  or  the  electronic  key  cannot  be  used

because the battery is depleted, the smart key system and wire-
less  remote  control  cannot  be  used.  In  such  cases,  the  doors
can be opened and the fuel cell system can be started by follow-
ing the procedure below.

Locking and unlocking the doors

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■

Key linked functions

Depress the brake pedal.
Touch the power switch with the
Toyota emblem side of the elec-
tronic key facing away from the
switch.

When  the  electronic  key  is
detected, a buzzer sounds and the
power switch will turn to ON mode.
When  the  smart  key  system  is
deactivated  in  customization  set-
ting,  the  power  switch  will  turn  to
ACCESSORY mode.

Firmly depress the brake pedal
and check that message is dis-
played  on  the  multi-information
display.

Press the power switch.

In the event that the fuel cell system still cannot be started, contact
your Toyota dealer.

Closes the windows

*

 (turn and hold)

Opens the windows

*

 (turn and hold)

*

: These settings must be customized at

your Toyota dealer. (



P. 487)

Starting the fuel cell system

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■

Stopping the fuel cell system

Shift the shift position to P and press the power switch as you normally do
when stopping the fuel cell system.

■

Replacing the key battery

As the above procedure is a temporary measure, it is recommended that the
electronic key battery be replaced immediately when the battery is depleted.
(



P. 400)

■

Alarm

Using the mechanical key to lock the doors will not set the alarm system.
If a door is unlocked using the mechanical key when the alarm system is set,
the alarm may be triggered. (



P. 82)

■

When the electronic key does not work properly

●

Make sure that the smart key system has not been deactivated in the cus-
tomization setting. If it is off, turn the function on. 
(Customizable features 



P. 486)

●

Check if battery-saving mode is set. If it is set, cancel the function. 
(



P. 145)

■

Changing power switch modes

Release the brake pedal and press the power switch in step 

 above.

The fuel cell system does not start and modes will be changed each time the
switch is pressed. (



P. 188)

WARNING

■

When using the mechanical key and operating the power windows

Operate the power window after checking to make sure that there is no pos-
sibility of any passenger having any of their body parts caught in the win-
dow. 
Also, do not allow children to operate the mechanical key. It is possible for
children and other passengers to get caught in the power window.

3

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If the 12-volt battery is discharged

If you have a set of jumper (or booster) cables and a second vehicle
with a 12-volt battery, you can jump start your vehicle by following the
steps below.

Confirm  that  the  electronic  key
is being carried.

When  connecting  the  jumper  (or
booster) cables, depending on the
situation,  the  alarm  may  activate
and the doors may lock. (



P. 82)

Open  the  hood  (



P.  366)  and

fuse box cover.

Open  the  exclusive  jump  start-
ing terminal cover.

The following procedures may be used to start the fuel cell sys-
tem if the 12-volt battery is discharged.
You can also call your Toyota dealer or a qualified repair shop.

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Remove the motor cover.

Connect the jumper cables according to the following procedure:

Connect  a  positive  jumper  cable  clamp  to  the  exclusive  jump
starting terminal on your vehicle.
Connect the clamp on the other end of the positive cable to the
positive (+) battery terminal on the second vehicle.
Connect a negative cable clamp to the negative (-) battery termi-
nal on the second vehicle.
Connect  the  clamp  at  the  other  end  of  the  negative  cable  to  a
solid, stationary, unpainted metallic point away from the exclusive
jump  starting  terminal  and  any  moving  parts,  as  shown  in  the
illustration.

Start the engine of the second vehicle. Increase the engine speed
slightly  and  maintain  at  that  level  for  approximately  5  minutes  to
recharge the 12-volt battery of your vehicle.
Maintain the engine speed of the second vehicle and start the fuel
cell system of your vehicle by turning the power switch to ON mode.

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Make sure the “READY” indicator comes on. If the indicator does
not come on, contact your Toyota dealer.
Once the fuel cell system has started, remove the jumper cables in
the exact reverse order from which they were connected.
Close the exclusive jump starting terminal cover, reinstall the motor
cover and the fuse box cover to its original position.

Once the fuel cell system starts, have the vehicle inspected at your
Toyota dealer as soon as possible.

■

Starting the fuel cell system when the 12-volt battery is discharged 

The fuel cell system cannot be started by push-starting.

■

To prevent 12-volt battery discharge

●

Turn off the headlights and the audio system while the fuel cell system is off.

●

Turn off any unnecessary electrical components when the vehicle is running
at a low speed for an extended period, such as in heavy traffic.

■

Charging the 12-volt battery

The electricity stored in the 12-volt battery will discharge gradually even when
the vehicle is not in use, due to natural discharge and the draining effects of
certain electrical appliances. If the vehicle is left for a long time, the 12-volt
battery may discharge, and the fuel cell system may be unable to start. (The
12-volt battery recharges  automatically while the  fuel cell system  is operat-
ing.)

■

When the 12-volt battery is removed or discharged

●

In some cases, it may not be possible to unlock the doors using the smart
key system when the 12-volt battery is discharged. Use the wireless remote
control or the mechanical key to lock or unlock the doors.

●

The fuel cell system may not start on the first attempt after the 12-volt bat-
tery has recharged but will start normally after the second attempt. This is
not a malfunction.

●

The power switch mode is memorized by the vehicle. When the 12-volt bat-
tery is reconnected, the system will return to the mode it was in before the
12-volt  battery  was  discharged.  Before  disconnecting  the  12-volt  battery,
turn the power switch off. 
If you are unsure what mode the power switch was in before the 12-volt bat-
tery discharged, be especially careful when reconnecting the 12-volt battery.

●

If the 12-volt battery is depleted with the shift position in P, it will not be pos-
sible to shift the shift position other than P. In this case, the vehicle cannot
be  towed  without  lifting  both  front  wheels  because  the  front  wheels  are
locked by the parking lock. (



P. 412)

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●

When the 12-volt battery is reconnected, start the fuel cell system, depress
the brake pedal, and confirm that it is possible to shift into each shift posi-
tion.

●

If the battery is removed or the terminals disconnected without operating the
water release function during cold weather, the vehicle may not start due to
the fuel cell system being frozen. To prevent this, operate the water release
function before removing the battery or disconnecting the terminals. 
(



P. 190)

■

When exchanging the 12-volt battery

Use  a  Central  Degassing  type  12-volt  battery  (Japanese  Industrial  Stan-
dards). Also,  use  12-volt  batteries  with  case  sizes  similar  to  one  prior  the
exchange and an equivalent 20 hour rate capacity (20HR) or greater.
• If the sizes differ, the 12-volt battery cannot be properly secured.
• If the 20 hour rate capacity is low, even if the time period where the vehicle

is not used is a short time, the 12-volt battery may discharge and fuel cell
system may not be able to start.

For details, consult your Toyota dealer.

WARNING

■

Avoiding 12-volt battery fires or explosions

Observe the following precautions to prevent accidentally igniting the flam-
mable gas that may be emitted from the 12-volt battery:

●

Make sure each jumper cable is connected to the correct terminal and that
it is not unintentionally in contact with any other than the intended terminal.

●

Do not allow the other end of the jumper cable connected to the “+” termi-
nal to come into contact with any other parts or metal surfaces in the area,
such as brackets or unpainted metal.

●

Do not allow the + and - clamps of the jumper cables to come into contact
with each other.

●

Do  not smoke,  use matches, cigarette lighters  or  allow  open flame near
the 12-volt battery.

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WARNING

■

12-volt battery precautions

The  12-volt  battery  contains  poisonous  and  corrosive  acidic  electrolyte,
while related parts contain lead and lead compounds. Observe the following
precautions when handling the 12-volt battery:

●

When  working  with  the  12-volt  battery,  always  wear  safety  glasses  and
take care not to allow any 12-volt battery fluids (acid) to come into contact
with skin, clothing or the vehicle body.

●

Do not lean over the 12-volt battery.

●

In the event that 12-volt battery fluid comes into contact with the skin or
eyes,  immediately  wash  the  affected  area  with  water  and  seek  medical
attention.
Place a wet sponge or cloth over the affected area until medical attention
can be received.

●

Always wash your hands after handling the 12-volt battery support, termi-
nals, and other battery-related parts.

●

Do not allow children near the 12-volt battery.

■

After recharging the 12-volt battery

Have the 12-volt battery inspected at your Toyota dealer as soon as possi-
ble.
If the 12-volt battery is deteriorating, continued use may cause the 12-volt
battery to emit a malodorous gas, which may be detrimental to the health of
passengers.

■

When exchanging the 12-volt battery

After exchanging, securely attach the exhaust hose and exhaust hole plug
to  the  exhaust  hole  of  the  exchanged  12-volt  battery.  If  not  properly
installed, gases (hydrogen) may leak into the vehicle interior, and there is
the possible danger of the gas igniting and exploding.

■

When replacing the 12-volt battery



P. 376

NOTICE

■

To prevent damaging the vehicle

The exclusive jump starting terminal is to be used when charging the 12-volt
battery  from  another  vehicle  in  an  emergency.  It  cannot  be  used  to  jump
start another vehicle.

■

When handling jumper cables

When connecting the jumper cables, ensure that they do not become entan-
gled in the cooling fans.

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If your vehicle overheats

The following may indicate that your vehicle is overheating.

●

The high coolant temperature warning light (



P. 418) comes on

or flashes, or a loss of fuel cell system power is experienced. (For
example, the vehicle speed does not increase.)

●

“FC System Overheat Output Power is Limited” (



P. 426) is dis-

played on the multi-information display

●

Steam comes out from under the hood.

Label
Fuel cell stack coolant 
reservoir

Inverter coolant reservoir

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■

If  the  high  coolant  temperature  warning  light  comes  on  or
flashes

Stop the vehicle in a safe place and turn off the air conditioning sys-
tem, and then stop the fuel cell system.
If you see steam or coolant leaks: 
Carefully lift the hood after the steam subsides.
If you do not see steam or coolant leaks: 
Carefully lift the hood.
After  the  fuel  cell  system  has
cooled 

down 

sufficiently,

inspect  the  hoses  and  radiator
core (radiator) for any leaks.

Fuel  cell  stack  coolant  sub
radiator
Fuel cell stack coolant radia-
tor
Electric cooling fans

If  a  large  amount  of  coolant  leaks,  immediately  contact  your  Toyota
dealer.

NOTICE

Correction procedures

The fuel cell stack coolant is exclusive for
fuel cell stack usage. Damage may occur
when water or any other type of coolant
is used, so never use any other fluid. 
If the fuel cell stack coolant is low, imme-
diately contact your Toyota dealer.

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The fuel cell stack coolant level
is  satisfactory  if  it  is  between
the “FULL” and “LOW” lines on
the reservoir.

Fuel cell stack coolant reser-
voir
“FULL” line
“LOW” line

If the amount of fuel cell stack coolant is low: 

Immediately contact your Toyota dealer.

If the amount of fuel cell stack coolant is not low:

Have the vehicle inspected at the nearest Toyota dealer.

Even if the fuel cell stack cool-
ant is low, do not refill it.

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■

If “FC System Overheat Output Power is Limited” is displayed
on the multi-information display

Stop the vehicle in a safe place and turn off the air conditioning
system, and then stop the fuel cell system.
If you see steam or coolant leaks: 
Carefully lift the hood after the steam subsides. 
If you do not see steam or coolant leaks: 
Carefully lift the hood.
After the fuel cell system has
cooled  down,  inspect  the
hoses  and  radiator  core
(radiator) for any leaks.

Inverter coolant radiator
Electric cooling fans

If  a  large  amount  of  coolant
leaks,  immediately  contact
your Toyota dealer.

The  inverter  coolant  level  is
satisfactory  if  it  is  between
the  “FULL”  and  “LOW”  lines
on the reservoir.

Inverter coolant reservoir
“FULL”
“LOW”

Add inverter coolant if neces-
sary.

Water can be used in an emer-
gency  if  inverter  coolant  is
unavailable. 

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8-2. Steps to take in an emergency

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Start the fuel cell system and turn the air conditioning system on
to check that the radiator cooling fans operate and to check for
coolant leaks from the radiator or hoses.

The fans operate when the air conditioning system is turned on immedi-
ately after a cold start. Confirm that the fans are operating by checking
the fan sound and air flow. If it is difficult to check these, turn the air con-
ditioning system on and off repeatedly. 
(The fans may not operate in freezing temperatures.)

If the fans are not operating: 
Stop  the  fuel  cell  system  immediately  and  contact  your  Toyota
dealer.
If the fans are operating: 
Have the vehicle inspected at the nearest Toyota dealer.

WARNING

■

When inspecting under the hood of your vehicle

Observe the following precautions. 
Failure to do so may result in serious injury such as burns.

●

If steam is seen coming from under the hood, do not open the hood until
the steam has subsided. The motor compartment may be very hot.

●

After  the  fuel  cell  system  has  been  turned  off,  check  that  the  “READY”
indicator is off. 
When  the  fuel  cell  system  is  operating,  the  cooling  fans  may  suddenly
operate even if the fuel cell system stops. Do not touch or approach rotat-
ing  parts  such  as  the  fans,  which  may  lead  to  fingers  or  clothing  (espe-
cially a tie, a scarf or a muffler) getting caught, resulting in serious injury.

●

Do not loosen the coolant reservoir caps or radiator cap, while the fuel cell
system and radiator are hot.
High temperature steam or coolant could spray out.

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