Toyota Sienna Hybrid (2023 year). Manual in english

416

6-3. Do-it-yourself maintenance

The coolant level is satisfactory
if it is between the “FULL” and
“LOW” lines on the reservoir
when the hybrid system is cold.

■

Engine coolant reservoir

Reservoir cap

“FULL” line

“LOW” line

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



P.509)

■

Power control unit coolant
reservoir

Reservoir cap

“FULL” line

“LOW” line

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



P.510)

■

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 coolant level drops within

a short time of replenishing

Visually check the radiators, hoses,

engine/power control unit coolant

reservoir caps, drain cock and water

pump.

If you cannot find a leak, have your

Toyota dealer, test the cap and

NOTICE

●

Be sure the engine oil filler cap

is properly tightened.

■

If oil is spilled on the engine

cover

To prevent the engine cover from

being damaged, remove any

engine oil from the engine cover

as soon as possible using a neu-

tral detergent. Do not use an

organic solvent such as brake

cleaner.

Checking the coolant

417

6-3. Do-it-yourself maintenance

Maintena

nce
a

nd ca

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 condition, have
your vehicle inspected by your
Toyota dealer.

■

Checking fluid level

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

■

Adding fluid

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



Fluid type

FMVSS No.116 DOT 3 or SAE

WARNING

■

When the hybrid system is

hot

Do not remove the engine/power

control unit coolant reservoir

caps.
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 hybrid system is

hot

Do not touch the radiator or con-

denser as they may be hot and

cause serious injuries, such as

burns.

■

When the electric cooling fan

is operating

Do not touch the engine compart-

ment.
With the power switch in ON, the

electric cooling fan may automati-

cally start to run if the air condi-

tioning is on and/or the coolant

temperature is high. Be sure the

power switch is OFF when work-

ing near the electric cooling fan or

radiator grille.

Checking and adding the
brake fluid

418

6-3. Do-it-yourself maintenance

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
“Windshield Washer Fluid Low”
is shown on the multi-informa-
tion display, the washer tank
may be empty. Add washer
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

WARNING

■

When adding washer fluid

Do not add washer fluid when the

hybrid system is hot or operating

as washer fluid contains alcohol

and may catch fire if spilled on the

hybrid system, etc.

NOTICE

■

Do not use any fluid other

than washer fluid

Do not use soapy water or engine

antifreeze 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.

419

6-3. Do-it-yourself maintenance

Maintena

nce
a

nd ca

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

■

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 power switch on

the charger is off when connecting

and disconnecting the charger

cables to the 12-volt battery.

■

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 hybrid system with the

power switch in ACC. The hybrid

system may not start with the

power switch turned off. How-

ever, the hybrid system will oper-

ate normally from the second

attempt.

●

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-

nect the 12-volt battery. Take

extra care when connecting the

12-volt battery if the power switch

mode prior to discharge is

unknown.

If the hybrid system will not start

even after multiple attempts at all

methods above, contact your

Toyota dealer.

12-volt battery

Location

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

serious injury, take the following

precautions 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.

420

6-3. Do-it-yourself maintenance

Remove the cover.

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

WARNING

■

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 trav-
eling to the nearest medical facil-
ity.

●

If electrolyte gets on your skin

Wash the affected area thor-
oughly. If you feel pain or burning,
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.

■

When there is insufficient 12-

volt battery fluid

Do not use if there is insufficient

fluid in the 12-volt battery. There

is a possible danger that the 12-

volt battery may explode.

NOTICE

■

When recharging the 12-volt

battery

Never recharge the 12-volt bat-

tery while the hybrid system is

operating. Also, be sure all acces-

sories are turned off.

Removing the 12-volt bat-
tery cover

Exterior

422

6-3. Do-it-yourself maintenance

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 men-

tioned on the sidewall of the tire.

(



P.528)

■

Tire types

●

Summer tires

Summer tires are high-speed perfor-
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.344)

■

If the tread on snow tires wears

down below 0.16 in. (4 mm)

The effectiveness of the tires as

snow tires is lost.

423

6-3. Do-it-yourself maintenance

Maintena

nce
a

nd ca

Rotate the tires in the order
shown.

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.

■

When rotating the tires

Make sure that the power switch is

OFF. If the tires are rotated while

the power switch is in ON, the tire

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.

●

Vehicles with compact spare

tire: Do not tow if your vehicle

has a compact spare tire

installed.

●

Vehicles without spare tire: Do

not tow anything if a tire that has

been repaired using the emer-

gency tire puncture repair kit is

installed. The load on the tire

may cause unexpected damage

to the tire.

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.

■

If tire inflation pressure of

each tire becomes low while

driving

Do not continue driving, or your

tires and/or wheels may be

ruined.

Tire rotation

424

6-3. Do-it-yourself maintenance

position information will not be

updated. If this accidentally occurs,

either turn the power switch to OFF

and then to ON, or initialize the sys-

tem after checking that the tire pres-

sure is properly adjusted.

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 warning sys-
tem of this vehicle adopts a 2-
type warning system



When “Adjust Pressure” is
displayed (Normal Warning)

The tire pressure warning light
comes on and a buzzer sounds
when the tire inflation pressure
becomes low due to natural air
leakage or outside temperature.
(Ways of coping:



P.470, 523)



When “Immediately Check
tire when Safe” is displayed
(Emergency Warning)

The tire pressure warning light
comes on and a buzzer sounds
when the tire inflation pressure
becomes low suddenly due to a
blowout. (Ways of coping:



P.470,

480, 490) However, the system
may not be able to detect sudden
tire ruptures (bursting, etc.).
The tire pressure detected by the
tire pressure warning system can
be displayed on the multi-informa-
tion display.

The unit can be changed.



With 4.2-inch display



With 7-inch display

■

How to change the unit



With 4.2-inch display

Park the vehicle in a safe
place and turn the power
switch off.

Changing the unit cannot be per-

formed while the vehicle is moving.

Turn the power switch to ON.

Press

of the meter

control switches on the steer-
ing wheel and select

Press

of the meter

control switches and select
“Vehicle Settings”, and then
press and hold “OK”.

Press

of the meter

control switches and select

Tire pressure warning
system

425

6-3. Do-it-yourself maintenance

Maintena

nce
a

nd ca

“TPWS Setting”, and then
press “OK”.

Press

to select

“Setting UNIT”.

Press

to select the

desired unit and then press
“OK”.



With 7-inch display

Park the vehicle in a safe
place and turn the power
switch off.

Changing the unit cannot be per-

formed while the vehicle is moving.

Turn the power switch to ON.

Press

of the meter

control switches on the steer-
ing wheel and select

Press

of the meter

control switches and select

, and then press and hold

“OK”.

Press

of the meter

control switches and select
“TPWS Setting”, and then
press “OK”.

Press

to select

“Setting UNIT”.

Press

to select the

desired unit and then press
“OK”.

■

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 mea-

sured using a tire pressure gauge.

■

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.

• A tire has been replaced with a

tire that is not an OE (Original

Equipment) tire.

• A tire has been replaced with a

tire that is not of the specified size.

• Tire chains, etc. are equipped.

• An auxiliary-supported run-flat tire

is equipped.

• 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

extremely higher than the speci-

fied level.

• If wheel without tire pressure

warning valves and transmitters

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.

• Near a TV tower, electric power

plant, gas station, radio station,

426

6-3. Do-it-yourself maintenance

large display, airport or other facil-

ity 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 driving and changing
the radio wave conditions.

●

When the vehicle is parked, the

time taken for the warning to start

or go off could be extended.

●

When tire inflation pressure

declines rapidly for example when

a tire has burst, the warning may

not function.

■

Warning performance of the tire

pressure warning system

The warning of the tire pressure

warning system will change in

accordance with the conditions

under which it was initialized. For

this reason, 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 system was initialized.

When replacing tires or wheels,
tire pressure warning valves and
transmitters must also be
installed.
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.430)

■

When replacing the tires and

wheels

If the ID code of the tire pressure

warning valve and transmitter is not

registered, the tire pressure warning

system will not work properly. After

driving for about 20 minutes, the tire

pressure warning light blinks for 1

minute and stays on to indicate a

system malfunction.

Installing tire pressure
warning valves and trans-
mitters

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 and the tire pressure

warning valves could be bound.

●

When replacing tire valve caps,

do not use tire valve caps other

than those specified.

The cap may become stuck.

427

6-3. Do-it-yourself maintenance

Maintena

nce
a

nd ca

■

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



When rotating the tires.



When changing the tire.



After registering the ID codes.
(



P.430)



When changing between two
registered wheel sets.

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



With 4.2-inch display

Park the vehicle in a safe
place and stop the hybrid
system for 20 minutes or
more.

Initialization cannot be performed

while the vehicle is moving.

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



P.523)

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.

Start the hybrid system.

Press

of the meter

control switches on the steer-
ing wheel and select

Press

of the meter

control switches, select
“Vehicle Settings” and then
press and hold “OK”.

Press

of the meter

control switches, select
“TPWS Setting” and then
press “OK”.

Press

of the meter

control switches, select the
“Setting Pressure”. Then
press and hold “OK”.

“Setting Pressure” will be dis-

played on the multi-information dis-

play and the tire pressure warning

light will blink 3 times.

NOTICE

■

To avoid damage to the tire

pressure warning valves and

transmitters (vehicles without

spare tire)

When a tire is repaired with liquid

sealants, the tire pressure warn-

ing valve and transmitter may not

operate properly. If a liquid seal-

ant 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 transmitter when repair-

ing or replacing the tire. (



P.426)

Initializing the tire pres-
sure warning system

428

6-3. Do-it-yourself maintenance

When the message disappears, ini-

tialization is complete.
A message is displayed on the

multi-information display. Also, “--”

is displayed for inflation pressure of

each tire on the multi-information

display while the tire pressure

warning system determines the

position.

Drive straight (with occa-
sional left and right turns) at
approximately 25 mph (40
km/h) or more for approxi-
mately 10 to 30 minutes.

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.



With 7-inch display

Park the vehicle in a safe
place and stop the hybrid
system for 20 minutes or
more.

Initialization cannot be performed

while the vehicle is moving.

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



P.523)

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.

Start the hybrid system.

Press

of the meter

control switches on the steer-
ing wheel and select

Press

of the meter

control switches, select

and then press and hold
“OK”.

Press

of the meter

control switches, select
“TPWS Setting” and then
press “OK”.

Press

of the meter

control switches, select the
“Setting Pressure”. Then
press and hold “OK”.

“Setting Pressure” will be dis-

played on the multi-information dis-

play and the tire pressure warning

light will blink 3 times.

When the message disappears, ini-

tialization is complete.
A message is displayed on the

multi-information display. Also, “--”

is displayed for inflation pressure of

each tire on the multi-information

display while the tire pressure

warning system determines the

position.

Drive straight (with occa-
sional left and right turns) at
approximately 25 mph (40

429

6-3. Do-it-yourself maintenance

Maintena

nce
a

nd ca

km/h) or more for approxi-
mately 10 to 30 minutes.

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 to OFF during initial-

ization, it is not necessary to

restart the initialization again as

initialization will restart automati-

cally when the power switch has

been turned to ON for the next

time.

●

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 the vehicle is driven in heavy

traffic or another situation where

other vehicles are driven close by,

it may take time for the system to

recognize the tire pressure warn-

ing valve and transmitters of your

vehicle over those of other vehi-

cles.

●

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-

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

430

6-3. Do-it-yourself maintenance

performing initialization, the tire

pressure warning light blinks for

approximately 1 minute and then

illuminates.

If the inflation pressure of each tire
is still not displayed, have the vehi-
cle inspected by 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 code.
When registering the ID codes,
perform the following procedure.



With 4.2-inch display

Park the vehicle in a safe
place, wait for approximately
20 minutes, and then start
the hybrid system.

Press

of the meter

control switches on the steer-
ing wheel and select

Press

of the meter

control switches and select

“Vehicle Settings”, and then
press and hold “OK”.

Press

of the meter

control switches and select
“TPWS Setting”, and then
press “OK”.

Press

of the meter

control switches and select
“Identifying Each Wheel &
Position”. Then press and
hold “OK” until the tire pres-
sure warning light starts
slowly blinking 3 times.

The change wheel set mode is acti-

vated and registration is started.
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.

Drive straight (with occa-
sional left and right turns) at
approximately 25 mph (40
km/h) or more for approxi-
mately 10 to 30 minutes.

When registration is completed, the

tire pressure warning light will go off

and the inflation pressure of each

tire will be displayed on the multi-

WARNING

■

When initializing the tire pres-

sure warning system

Do not initializing tire inflation

pressure without first adjusting

the tire inflation pressure to the

specified level. Otherwise, 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 inflation pressure is

actually normal.

Registering ID codes

431

6-3. Do-it-yourself maintenance

Maintena

nce
a

nd ca

information 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.

Initialize the tire pressure
warning system. (



P.427)



With 7-inch display

Park the vehicle in a safe
place, wait for approximately
20 minutes, and then start
the hybrid system.

Press

of the meter

control switches on the steer-
ing wheel and select

Press

of the meter

control switches and select

, and then press and hold

“OK”.

Press

of the meter

control switches and select
“TPWS Setting”, and then
press “OK”.

Press

of the meter

control switches and select
“Identifying Each Wheel &
Position”. Then press and
hold “OK” until the tire pres-
sure warning light starts
slowly blinking 3 times.

The change wheel set mode is acti-

vated and registration is started.
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.

Drive straight (with occa-
sional left and right turns) at
approximately 25 mph (40
km/h) or more for approxi-
mately 10 to 30 minutes.

When registration is completed, the

tire pressure warning light will go off

and 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, 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.

Initialize the tire pressure
warning system. (



P.427)

■

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.

Toyota Sienna Hybrid (2023 year). Manual in english - page 26