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Toyota Sienna Hybrid (2023 year). Manual in english - page 27

432

6-3. Do-it-yourself maintenance

●

Make sure to initialize the tire

pressure warning system after

registering the ID codes. If the

system is initialized before regis-

tering the ID codes, the initialized

values will be invalid.

●

ID codes can be registered by

yourself, but depending on the

driving conditions and driving

environment, registration may

take some time to complete.

●

As the tires will be warm when

registration is completed, make

sure to allow the tires to cool

before performing initialization.

■

Canceling ID code registration

●

To cancel ID code registration

after it has been started, select

“Identifying Each Wheel & Posi-

tion” on the multi-information dis-

play and press and hold “OK”

again.

●

If ID code registration has been

canceled, the tire pressure warn-

ing light will blink for approxi-

mately 1 minute when the power

switch is turned to ON and then

illuminate. The tire pressure warn-

ing system will be operational

when the tire pressure warning

light turns off.

●

If the warning light does not turn

off even after several minutes

have elapsed, ID code registration

may not have been canceled cor-

rectly. To cancel registration, per-

form the ID code registration start

procedure again and then turn the

power switch off before driving.

■

If ID codes are not registered

properly

●

In the following situations, ID code

registration may take longer than

usual to be completed or may not

be possible. Normally, registra-

tion completes within approxi-

mately 30 minutes.

If ID code registration is not com-

plete after driving for approxi-

mately 30 minutes, continue

driving for a while.

• Vehicle is not parked for approxi-

mately 20 minutes or more before

driving

• Vehicle is not driven at approxi-

mately 25 mph (40 km/h) or more

• Vehicle is driven on unpaved

roads

• Vehicle is driven near other vehi-

cles and system cannot recog-

nize tire pressure warning valve

and transmitters of your vehicle

over those of other vehicles

• Wheel with tire pressure warning

valve and transmitter installed is

inside or near the vehicle

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

●

If the vehicle is reversed during

registration, the data up to that

point is reset, so perform the reg-

istration procedure again from the

beginning.

●

In the following situations, ID code

registration will not be started or

was not completed properly and

the system will not operate prop-

erly. Perform the ID code registra-

tion procedure again.

• If, when attempting to start ID

code registration, the tire pressure

warning light does not blink slowly

3 times.

• If, when the vehicle has been

driven for about 20 minutes after

performing ID code registration,

the tire pressure warning light

blinks for approximately 1 minute

and then illuminates.

If the ID codes cannot be registered
even when performing the above
procedure, contact your Toyota
dealer.

Your vehicle is equipped with
tire pressure warning system

Selecting wheel set

433

6-3. Do-it-yourself maintenance

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with the function to have ID
codes registered for a second
wheel set, for example a winter
set. You can register a second
wheel set by yourself or your
Toyota dealer.
After registration of a second
wheel set, either of these two
wheel sets can be selected for
usage with the tire pressure
warning system.

■

Operating conditions for
the function



This function will perform the
change of wheel set only if a
second wheel set has been
registered. If no second wheel
set has been registered, no
change will be made when
selecting this function in the
menu.



Only a change between both
registered wheel set is possi-
ble, mixing between these
wheel sets is not supported.

■

How to change between
wheel sets

Have the vehicle fitted with
the preferred wheel set.



With 4.2-inch display

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.

Afterward, the tire pressure
warning light turns on after
flashing for 1 minute.
After 2 minutes, registration of a
second wheel set is being per-
formed. The tire pressure warn-
ing light will turn off and “--” will
be displayed for the inflation
pressure of each tire on the
multi-information display.

Initialize the tire pressure
warning system. (



P.427)

If the tire inflation pressure settings

for the installed tires change, initial-

ization operations are required, but

if the tire inflation pressure settings

are the same, initialization is not

required.

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.

Registration of a second wheel set

is complete when the tire pressure

warning light turns off and the infla-

tion pressure of each tire is dis-

played on the multi-information

display.

434

6-3. Do-it-yourself maintenance



With 7-inch display

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.

Afterward, the tire pressure warning

light turns on after flashing for 1

minute.
After 2 minutes, registration of a

second wheel set is being per-

formed. The tire pressure warning

light will turn off and “--” will be dis-

played for the inflation pressure of

each tire on the multi-information

display.

Initialize the tire pressure
warning system. (



P.427)

If the tire inflation pressure settings

for the installed tires change, initial-

ization operations are required, but

if the tire inflation pressure settings

are the same, initialization is not

required.

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

(40km/h) or more for approxi-
mately 10 to 30 minutes.

Registration of a second wheel set

is complete when the tire pressure

warning light turns off and the infla-

tion pressure of each tire is dis-

played on the multi-information

display.

435

6-3. Do-it-yourself maintenance

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



P.523)

Tire valve

Tire pressure gauge

Remove the tire valve cap.

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

Read the pressure using the
gauge gradations.

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

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

Put the tire valve cap back
on.

■

Tire inflation pressure check

interval

You should check tire inflation pres-

sure every two weeks, or at least

once a month.

Tire inflation pressure

Make sure to maintain the
proper tire inflation pres-
sure. Tire inflation pressure
should be checked at least
once per month. However,
Toyota recommends that
tire inflation pressure be
checked once every two
weeks. (



P.523)

Checking the specified
tire inflation pressure

Inspection and adjust-
ment procedure

436

6-3. Do-it-yourself maintenance

Do not forget to check the spare.

■

Effects of incorrect tire inflation

pressure

Driving with incorrect tire inflation

pressure may result in the following:

●

Reduced fuel economy

●

Reduced driving comfort and poor

handling

●

Reduced tire life due to wear

●

Reduced safety

●

Damage to the drive train

If a tire needs frequent inflating,

have it checked by your Toyota

dealer.

■

Instructions for checking tire

inflation pressure

When checking tire inflation pres-

sure, observe the following:

●

Check only when the tires are

cold.

If your vehicle has been parked

for at least 3 hours or has not

been driven for more than 1 mile

or 1.5 km, you will get an accurate

cold tire inflation pressure reading.

●

Always use a tire pressure gauge.

It is difficult to judge if a tire is

properly inflated based only on its

appearance.

●

It is normal for the tire inflation

pressure to be higher after driving

as heat is generated in the tire. Do

not reduce tire inflation pressure

after driving.

●

Never exceed the vehicle capacity

weight. Passengers and luggage

weight should be placed so that

the vehicle is balanced.

WARNING

■

Proper inflation is critical to

save tire performance

Keep your tires properly inflated.

If the tires are not properly

inflated, the following conditions

may occur which could lead to an

accident resulting in death or seri-

ous injury:

●

Excessive wear

●

Uneven wear

●

Poor handling

●

Possibility of blowouts resulting

from overheated tires

●

Air leaking from between tire

and wheel

●

Wheel deformation and/or tire

damage

●

Greater possibility of tire dam-

age while driving (due to road

hazards, expansion joints,

sharp edges in the road, etc.)

NOTICE

■

When inspecting and adjust-

ing tire inflation pressure

Be sure to put the tire valve caps

back on.

If a valve cap is not installed, dirt

or moisture may get into the valve

and cause an air leak, resulting in

decreased tire inflation pressure.

437

6-3. Do-it-yourself maintenance

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

Replacement wheels are avail-
able at your Toyota dealer.

: Conventionally referred to as off-

set.

Toyota does not recommend
using the following:



Wheels of different sizes or
types



Used wheels



Bent wheels that have been
straightened

■

When replacing wheels

The wheels of your vehicle are

equipped with tire pressure warning

valves and transmitters that allow

the tire pressure warning system to

provide advance warning in the

event of a loss in tire inflation pres-

sure. Whenever wheels are

replaced, tire pressure warning

valves and transmitters must be

installed. (



P.424, 438)

Wheels

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

Wheel selection

WARNING

■

When replacing wheels

●

Do not use wheels that are a dif-

ferent size from those recom-

mended in the Owner’s Manual,

as this may result in a loss of

handling control.

●

Never use an inner tube in a

leaking wheel which is designed

for a tubeless tire. Doing so may

result in an accident, causing

death or serious injury.

■

When installing the wheel

nuts

Never use oil or grease on the

wheel bolts or wheel nuts. Oil and

grease may cause the wheel nuts

to be excessively tightened, lead-

ing to bolt or disc wheel damage.

In addition, the oil or grease can

cause the wheel nuts to loosen

and the wheel may fall off, caus-

ing an accident and resulting in

death or serious injury. Remove

any oil or grease from the wheel

bolts or wheel nuts.

■

Use of defective wheels pro-

hibited

Do not use cracked or deformed

wheels.
Doing so could cause the tire to

leak air during driving, possibly

causing an accident.

438

6-3. Do-it-yourself maintenance



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



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



Vehicles with 17-inch or 18-
inch tires: Be careful not to
damage the aluminum wheels
when using tire chains.



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

Turn the power switch off.

Open the glove box and slide
off the damper.

Push in each side of the
glove box to disconnect the
claws, and then slowly and
fully open the glove box while
supporting it.

NOTICE

■

Replacing tire pressure warn-

ing valves and transmitters

●

Because tire repair or replace-

ment may affect the tire pres-

sure warning valves and

transmitters, make sure to have

tires serviced by your Toyota

dealer or other qualified service

shop. In addition, make sure to

purchase your tire pressure

warning valves and transmit-

ters at your Toyota dealer.

●

Ensure that only genuine

Toyota wheels are used on your

vehicle.

Tire pressure warning valves

and transmitters may not work

properly with non-genuine

wheels.

Aluminum wheel precau-
tions

Air conditioning filter

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

Removal method

439

6-3. Do-it-yourself maintenance

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With the glove box fully open,
slightly lift up the glove box
and pull toward the seat to
detach the bottom of the
glove box.

Do not use excessive force if the

glove box does not detach when

lightly pulled. Instead, pull toward

the seat while slightly adjusting the

height of the glove box.

Unlock the filter cover (

pull the filter cover out of the
claws (

), and remove the

filter cover.

Remove the filter case.

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

The “

UP” marks shown on the

filter should be pointing up.

When installing, reverse the
steps listed.

■

Checking interval

Inspect and replace the air condi-

tioning filter according to the mainte-

nance schedule. In dusty areas or

areas with heavy traffic flow, early

replacement may be required. (For

scheduled maintenance information,

please refer to the “Owner’s Manual

Supplement” or “Scheduled Mainte-

nance Guide”.)

■

If air flow from the vents

decreases dramatically

The filter may be clogged. Check

the filter and replace if necessary.

440

6-3. Do-it-yourself maintenance

■

Scheduled maintenance of the

air intake vents is necessary

when

In some situations such as when the

vehicle is used frequently or in

heavy traffic or dusty areas, the air

intake vents may need to be

cleaned more regularly.
For details, refer to “Scheduled

Maintenance Guide” or “Owner’s

Manual Supplement”.

■

Cleaning the air intake vents

Improper handling of the air intake

vent covers and filters may result in

damage to them. If you have any

concerns about cleaning the filters,

contact your Toyota dealer.

NOTICE

■

When using the air condition-

ing system

Make sure that a filter is always

installed. Using the air condition-

ing system without a filter may

cause damage to the system.

■

When removing the glove box

Always follow the specified proce-

dure to remove the glove box

(



P.438). If the glove box is

removed without following the

specified procedure, the hinge of

the glove box may become dam-

aged.

■

To prevent damage to the fil-

ter cover

When moving the filter cover in

the direction of arrow to release

the fitting, pay attention not to

apply excessive force to the

claws. Otherwise, the claws may

be damaged.

Cleaning the hybrid

battery (traction bat-

tery) air intake vents

To prevent the fuel econ-
omy from being affected,
visually inspect the hybrid
battery (traction battery) air
intake vents periodically for
clogs.

If they are dusty or clogged
or if “Maintenance Required
for Traction Battery Cooling
Parts See Owner’s Manual”
is displayed on the multi-
information display, clean
the air intake vents using
the following procedures:

441

6-3. Do-it-yourself maintenance

Maintena

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Turn the power switch off.

Using a Phillips screwdriver,
remove the clip.

Remove the air intake vent
cover.

Pull the cover as shown in the illus-

tration to disengage the claws,

starting from the claw in the upper

right corner and pull the cover

toward the front of the vehicle to

remove it.

Remove the filter from the air
intake vent cover.

Disengage the 3 center claws from

the filter.
If dust has accumulated on the air

intake vent cover, remove the dust

with a vacuum cleaner, etc.

Remove the dust and sand
from the filter.

Using a vacuum cleaner, etc.,

absorb dust and sand from the filter

by profiling the nozzle lightly along

the fold.

NOTICE

■

If “Maintenance Required for

Traction Battery Cooling

Parts See Owner’s Manual” is

displayed on the multi-infor-

mation display

Clean the air intake vents immedi-

ately.
If the vehicle is continuously

driven with the warning message

displayed, it may cause a mal-

function or output restriction of the

hybrid battery (traction battery).

Cleaning procedure

442

6-3. Do-it-yourself maintenance

Hold the filter to the light and
check if it is not clogged.

If the dust or sand cannot be

removed completely, contact your

Toyota dealer.

Reinstall the filter to the
cover.

Engage the 3 center claws to install

the filter.
Make sure that the filter is not

crooked or deformed when install-

ing it.

Install the air intake vent
cover.

Insert the tab of the cover as shown

in the illustration and push the

cover to engage the claws.

Using a Phillips screwdriver,
install the clip.



If “Maintenance Required for
Traction Battery Cooling Parts
See Owner’s Manual” was
displayed on the multi-infor-
mation display

Start the hybrid system and

check that the warning mes-
sage is no longer displayed.

It may take approximately 20 min-

utes after the hybrid system is

started until the warning message

disappears.
If the warning message does not

disappear after some time, have

the vehicle inspected by your

Toyota dealer.

■

If the dust or sand on the filter

cannot be removed

It is recommended to use a vacuum

cleaner with plastic brushes.

443

6-3. Do-it-yourself maintenance

Maintena

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WARNING

■

When cleaning the air intake

vents

●

Do not use water or other liq-

uids to clean the air intake

vents. If water is applied to the

hybrid battery (traction battery)

or other components, a mal-

function or fire may occur.

●

Before cleaning the air intake

vents, make sure to turn the

power switch off to stop the

hybrid system.

●

Do not put a hand or leg in the

air intake vents. If it is caught in

a cooling fan, or if it touches a

high voltage part that results in

an electric shock, death or seri-

ous injuries may result.

NOTICE

■

When cleaning the air intake

vents

Do not use an air blow gun, etc.
Dust may be blown out, possibly

causing a malfunction or output

restriction of the hybrid battery

(traction battery).

■

To prevent damage to the

vehicle

Observe the following precau-

tions:

●

Do not allow liquid or foreign

matter to enter the air intake

vents.

●

Make sure to reinstall the filters

and covers to their original posi-

tions after cleaning.

●

Do not install anything to the air

intake vents other than the

exclusive filters for this vehicle

or use the vehicle without the fil-

ters installed.

■

To prevent damage to the fil-

ters

Observe the following precau-

tions.
If the filter is damaged, have it

replaced with a new filter by your

Toyota dealer.

●

Do not use an air blow gun, etc.

●

Do not press hard a vacuum

cleaner, etc. against the filter.

●

Do not use a hard brush, such

as a metal brush.

●

Do not break the fold of the fil-

ter.

444

6-3. Do-it-yourself maintenance

■

If the electronic key battery is

depleted

The following symptoms may occur:

●

The smart key system and wire-

less remote control will not func-

tion properly.

●

The operational range will be

reduced.

Prepare the following before
replacing the battery:



Flathead screwdriver



Small flathead screwdriver



Lithium battery CR2450

■

Use a CR2450 lithium battery

●

Batteries can be purchased at

your Toyota dealer, local electrical

appliance shops or camera stores.

●

Replace only with the same or

equivalent type recommended by

the manufacturer.

●

Dispose of used batteries accord-

ing to the local laws.

Release the lock and remove
the mechanical key.

Remove the key cover.

To prevent damage to the key,

cover the tip of the flathead screw-

driver with a rag.

Remove the depleted battery
using a small flathead screw-
driver.

When removing the cover, the elec-

tronic key module may stick to the

cover and the battery may not be

visible. In this case, remove the

electronic key module in order to

remove the battery.
Insert a new battery with the “+” ter-

Electronic key battery

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

Items to prepare

Replacing the battery

445

6-3. Do-it-yourself maintenance

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minal facing up.

When installing, reverse the
steps listed.

WARNING

■

Battery precautions

Observe the following precau-

tions.

Failure to do so may result in

death or serious injury.

●

Do not swallow the battery.

Doing so may cause chemical

burns.

●

A coin battery or button battery

is used in the electronic key. If a

battery is swallowed, it may

cause severe chemical burns in

as little as 2 hours and may

result in death or serious injury.

●

Keep away new and removed

batteries from children.

●

If the cover cannot be firmly

closed, stop using the electronic

key and stow the key in the

place where children cannot

reach, and then contact your

Toyota dealer.

●

If you accidentally swallow a

battery or put a battery into a

part of your body, get emer-

gency medical attention imme-

diately.

■

To prevent battery explosion

or leakage of flammable liq-

uid or gas

●

Replace the battery with a new

battery of the same type. If a

wrong type of battery is used, it

may explode.

●

Do not expose batteries to

extremely low pressure due to

high altitude or extremely high

temperatures.

●

Do not burn, break or cut a bat-

tery.

NOTICE

■

When replacing the battery

Use a flathead screwdriver of

appropriate size. Applying exces-

sive force may deform or damage

the cover.

■

For normal operation after

replacing the battery

Observe the following precautions

to prevent accidents:

●

Always work with dry hands.

Moisture may cause the battery

to rust.

●

Do not touch or move any other

component inside the remote

control.

●

Do not bend either of the battery

terminals.

446

6-3. Do-it-yourself maintenance

Turn the power switch off.

Open the fuse box cover.



Engine compartment

Push claw

and

to com-

pletely release the lock, and then lift
up the cover.



Left side instrument panel

Remove the lid.



Right side luggage compart-
ment

Remove the cover

Remove the fuse.

Only type A fuse can be removed

using the pullout tool.

Check if the fuse is blown.

Replace the blown fuse with a new

fuse of an appropriate amperage

rating. The amperage rating can be

found on the fuse box lid.



Type A

Normal fuse

Checking and replac-

ing fuses

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

Checking and replacing
fuses

447

6-3. Do-it-yourself maintenance

Maintena

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Blown fuse



Type B

Normal fuse

Blown fuse



Type C

Normal fuse

Blown fuse

■

After a fuse is replaced

●

When installing the lid, make sure

that the tab is installed securely.

●

If the lights do not turn on even

after the fuse has been replaced,

a bulb may need replacement.

(



P.448)

●

If the replaced fuse blows again,

have the vehicle inspected by

your Toyota dealer.

■

If there is an overload in a cir-

cuit

The fuses are designed to blow,

protecting the wiring harness from

damage.

■

When replacing light bulbs

Toyota recommends that you use

genuine Toyota products designed

for this vehicle. Because certain

bulbs are connected to circuits

designed to prevent overload, non-

genuine parts or parts not designed

for this vehicle may be unusable.

WARNING

■

To prevent system break-

downs and vehicle fire

Observe the following precau-

tions.

Failure to do so may cause dam-

age to the vehicle, and possibly a

fire or injury.

●

Never use a fuse of a higher

amperage rating than that indi-

cated, or use any other object in

place of a fuse.

●

Always use a genuine Toyota

fuse or equivalent.

Never replace a fuse with a

wire, even as a temporary fix.

●

Do not modify the fuses or fuse

boxes.

NOTICE

■

Before replacing fuses

Have the cause of electrical over-

load determined and repaired by

your Toyota dealer as soon as

possible.

■

To prevent damage to the

engine compartment fuse box

cover

When opening the fuse box, com-

pletely release the claw locks

before lifting up the cover. Other-

wise, the claws may be damaged.

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