Lexus GX460 (2023 year). Manual in english - page 15

Main

WARNING

The engine compartment contains many mechanisms and fluids that may move suddenly,

become hot, or become electrically energized. To avoid death or serious injury, observe

the following precautions:

■

When working on the engine compartment

●

Keep hands, clothing and tools away from the moving fan and engine drive belt.

●

Be careful not to touch the engine, radiator, exhaust manifold, etc. right after driving

as they may be hot. Oil and other fluids may also be hot.

●

Do not leave anything that may burn easily, such as paper or rags, in the engine com-

partment.

●

Do not smoke, cause sparks or expose an open flame to fuel or the battery. Fuel and

battery fumes are flammable.

●

Be extremely cautious when working on the battery. It contains poisonous and corro-

sive sulfuric acid.

■

When working near the electric cooling fans or radiator grille

Be sure the engine switch is off. With the engine switch in IGNITION ON mode, the

electric cooling fans may automatically start to run if the air conditioning is on and/or

the coolant temperature is high. (

■

When working on or under the vehicle

Do not get under the vehicle with just the jack supporting it.

Always use automotive jack stands or other solid supports.

■

Safety glasses

Wear safety glasses to prevent flying or falling material, fluid spray, etc. from getting in

your eyes.

NOTICE

■

If you remove the air cleaner filter

Driving with the air cleaner filter removed may cause excessive engine wear due to dirt

in the air.

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Hood

Pull the hood lock release lever.

The hood will pop up slightly.

Move the auxiliary catch lever to
side direction and lift the hood.

Release the lock from the inside of the vehicle to open the hood.

WARNING

■

Pre-driving check

Check that the hood is fully closed and locked.

If the hood is not locked properly, it may open while the vehicle is in motion and cause

an accident, which may result in death or serious injury.

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Main

Engine compartment

Power steering fluid reservoir

(

P. 483)

Engine oil level dipstick

(



P. 477)

Engine oil filler cap

(

P. 478)

Brake fluid reservoir (



Fuse box

(



P. 509)

Battery

(



P. 484)

Radiator

(



Condenser

(



Cooling fans
Engine coolant reservoir

(



P. 479)

Washer fluid tank

(

P. 487)

3
4
5

6
7
8
9

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Main

With the engine at operating temperature and turned off, check the oil level on
the dipstick.

■

Checking the engine oil

Park the vehicle on level ground. After warming up the engine and turning
it off, wait more than 5 minutes for the oil to drain back into the bottom of
the engine.
Holding a rag under the end, pull
the dipstick out.

Wipe the dipstick clean.
Reinsert the dipstick fully.
Holding a rag under the end, pull the dipstick out and check the oil level.

Low
Normal
Excessive

The shape of the dipstick may dif-

fer depending on the type of vehi-

cle or engine.

Wipe the dipstick and reinsert it fully.

Engine oil

3
4
5

2
3

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■

Adding engine oil

If the oil level is below or near the
low level mark, add engine oil of the
same type as already in the engine.

Make sure to check the oil type and prepare the items needed before adding
oil.

Remove the oil filler cap by turning it counterclockwise.
Add engine oil slowly, checking the dipstick.
Install the oil filler cap by turning it clockwise.

■

Engine oil consumption

A certain amount of engine oil will be consumed while driving. In the following situations,

oil consumption may increase, and engine oil may need to be refilled in between oil

maintenance intervals.

●

When the engine is new, for example directly after purchasing the vehicle or after

replacing the engine

●

If low quality oil or oil of an inappropriate viscosity is used

●

When driving at high engine speeds or with a heavy load, when towing, or when driving

while accelerating or decelerating frequently

●

When leaving the engine idling for a long time, or when driving frequently through

heavy traffic

■

After changing the engine oil

The engine oil maintenance data should be reset. Perform the following procedures:

Press

of the meter control switches and select

on the multi-informa-

tion display.
Press

of the meter control switches and select “Vehicle Settings”, and then

press .
Press

of the meter control switches and select “Oil Maintenance”, and then

press .
Select the “Yes” and press

“Reset Complete” will be displayed when the reset procedure has been completed.

Engine oil selection



P. 582

Oil quantity (Low



Full)

1.6 qt. (1.5 L, 1.3 Imp.qt.)

Items

Clean funnel

2
3

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The coolant level is satisfactory if it is between the “F” and “L” lines on the reser-
voir when the engine is cold.

Reservoir cap
“F”
“L”

If the level is on or below the “L” line, add

coolant up to the “F” line.

WARNING

■

Used engine oil

●

Used engine oil contains potentially harmful contaminants which may cause skin dis-

orders such as inflammation or skin cancer, so care should be taken to avoid pro-

longed and repeated contact. To remove used engine oil from your skin, wash

thoroughly with soap and water.

●

Dispose of used oil and filters only in a safe and acceptable manner. Do not dispose of

used oil and filters in household trash, in sewers or onto the ground. Call your Lexus

dealer, service station or auto parts store for information concerning recycling or dis-

posal.

●

Do not leave used engine oil within the reach of children.

NOTICE

■

To prevent serious engine damage

Check the oil level on regular basis.

■

When replacing the engine oil

●

Be careful not to spill engine oil on the vehicle components.

●

Avoid overfilling, or the engine could be damaged.

●

Check the oil level on the dipstick every time you refill the vehicle.

●

Be sure the engine oil filler cap is properly tightened.

Engine coolant

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■

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 % deion-

ized water. (Minimum temperature: -31



F [-35



C])

Canada: “Toyota Super Long Life Coolant” is a mixture of 55 % coolant and 45 % deion-

ized water. (Minimum temperature: -44



F [-42



C])

For more details about engine coolant, contact your Lexus dealer.

■

If the coolant level drops within a short time of replenishing

Visually check the radiator, hoses, engine coolant reservoir cap, radiator cap, drain cock

and water pump. If you cannot find a leak, have your Lexus dealer test the cap and check

for leaks in the cooling system.

WARNING

■

When the engine is hot

Do not remove the radiator cap.

The cooling system may be under pressure and may spray hot coolant 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 cool-

ing. 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 damage to parts or paint.

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Check the radiator and condenser and clear any foreign objects.
If either of the above parts is extremely dirty or you are not sure of their condi-
tion, have your vehicle checked by your Lexus 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.

Radiator and condenser

WARNING

■

When the engine is hot

Do not touch the radiator or condenser as they may be hot and cause serious injuries,

such as burns.

Brake fluid

Fluid type

FMVSS No.116 DOT 3 or SAE J1703 brake fluid

Items

Clean funnel

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■

Brake fluid can absorb moisture from the air

Excess moisture in the fluid can cause a dangerous loss of braking efficiency. Use only

newly opened brake fluid.

WARNING

■

When filling the reservoir

Take care because brake fluid can harm your hands or eyes and damage painted sur-

faces. If fluid gets on 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 or when

the fluid level in the accumulator is high. If the reservoir needs frequent refilling, it may

indicate a serious problem.

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■

Fluid level

The fluid level should be within the appropriate range.

Full (when cold)
Add fluid (when cold)
Full (when hot)
Add fluid (when hot)

Hot:

The vehicles has been driven around 50 mph (80 km/h) for 20 min-
utes, or slightly longer in frigid temperatures.
(Fluid temperature, 140



F - 175



F [60



C - 80



C]).

Cold: The engine has not been run for about 5 hours.

(Room temperature, 50



F - 85



F [10



C - 30



C]).

■

Checking the fluid level

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

Clean all dirt off the reservoir.
Remove the cap by turning it counterclockwise.
Wipe the dipstick clean.
Reinstall the cap and remove it again.
Check the fluid level.

Power steering fluid

2
3
4

Fluid type

Automatic transmission fluid DEXRON

II or III

Items

Rag or paper, clean funnel (only for adding fluid)

2
3
4
5

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Check the battery as follows.

■

Battery exterior

Make sure that the battery terminals are not corroded and that there are no
loose connections, cracks, or loose clamps.

Terminals
Hold-down clamp

WARNING

■

When checking the reservoir

Take care as the reservoir may be hot.

NOTICE

■

When adding fluid

Avoid overfilling, or the power steering may be damaged.

■

After replacing the reservoir cap

Check the steering box case, vane pump and hose connections for leaks or damage.

Battery

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Main

■

Before recharging

When recharging, the battery produces hydrogen gas which is flammable and explosive.

Therefore, observe the following before recharging:

●

If recharging with the battery 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 battery.

■

After recharging/reconnecting the battery

●

Unlocking the doors using the smart access system with push-button start may not be

possible immediately after reconnecting the battery. If this happens, use the wireless

remote control or the mechanical key to lock/unlock the doors.

●

Start the engine with the engine switch in ACCESSORY mode. The engine may not

start with the engine switch turned off. However, the engine will operate normally from

the second attempt.

●

The engine switch mode is recorded by the vehicle. If the battery is reconnected, the

vehicle will return the engine switch mode to the status it was in before the battery was

disconnected. Make sure to turn off the engine before disconnect the battery. Take

extra care when connecting the battery if the engine switch mode prior to discharge is

unknown.

If the system will not start even after multiple attempts, contact your Lexus dealer.

WARNING

■

Chemicals in the battery

Batteries contain poisonous 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 battery:

●

Do not cause sparks by touching the battery terminals with tools.

●

Do not smoke or light a match near the battery.

●

Avoid contact with eyes, skin and clothes.

●

Never inhale or swallow electrolyte.

●

Wear protective safety glasses when working near the battery.

●

Keep children away from the battery.

■

Where to safely charge the battery

Always charge the battery in an open area. Do not charge the battery in a garage or

closed room where there is not sufficient ventilation.

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WARNING

■

How to recharge the battery

Only perform a slow charge (5A or less). The battery may explode if charged at a

quicker rate.

■

Emergency measures regarding electrolyte

●

If electrolyte gets in your eyes

Flush your eyes with clean water for at least 15 minutes and get immediate medical

attention. If possible, continue to apply water with a sponge or cloth while traveling to

the nearest medical facility.

●

If electrolyte gets on your skin

Wash the affected area thoroughly. 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 fol-

low the procedure above if necessary.

●

If you accidentally swallow electrolyte

Drink a large quantity of water or milk. Get emergency medical attention immedi-

ately.

NOTICE

■

When recharging the battery

Never recharge the battery while the engine is running. Also, be sure all accessories

are turned off.

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If any washer does not work or “Wind-
shield Washer Fluid Low” appears on
the multi-information display, the
washer tank may be empty. Add
washer fluid.

Washer fluid

WARNING

■

When adding washer fluid

Do not add washer fluid when the engine is hot or running as washer fluid contains

alcohol and may catch fire if spilled on the engine 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 leading to problems of the washer fluid not spraying.

■

Diluting washer fluid

Dilute washer fluid with water as necessary.

Refer to the freezing temperatures listed on the label of the washer fluid bottle.

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Tires

Check if the treadwear indicators are showing on the tires. Also check the tires
for uneven wear, such as excessive wear on one side of the tread.
Check the spare tire condition and pressure if not rotated.

New tread
Worn tread
Treadwear indicator

The location of treadwear indicators is shown by a “TWI” or “ ” mark, etc., molded

into the sidewall of each tire.

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

Rotate the tires in the order shown.

To equalize tire wear and extend tire life,

Lexus recommends that tire rotation is

carried out at the same interval as tire

inspection.
Do not fail to initialize the tire pressure

warning system after tire rotation.

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

Checking tires

Tire rotation

2
3

Front

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Main

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

●

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



P. 537)

●

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



P. 91)

The illustration used is intended as an

example, and may differ from the image

that is actually displayed on the multi-

information display.

◆

Installing tire pressure warning valves and transmitters

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. 491)

◆

Initializing the tire pressure warning system

■

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

●

When changing the tire size.

●

When rotating the tires.

●

When the tire inflation pressure is changed such as when changing travel-
ing speed or load weight.

●

After registering the ID codes. (



P. 491)

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

Tire pressure warning system

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■

How to initialize the tire pressure warning system

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

Initialization cannot be performed while the vehicle is moving.

Adjust the tire inflation pressure to the specified cold tire inflation pressure
level. (



P. 588)

Make sure to adjust the tire pressure to the specified cold tire inflation pressure

level. The tire pressure warning system will operate based on this pressure level.

Start the engine. (



P. 200)

Press

of the meter control switches and select

Press

of the meter control switches and select “Vehicle

Settings”, and then press

Press

of the meter control switches and select “TPWS”, and

then press

Press

of the meter

control switches and select “Set
Pressure”, and then press and
hold

until the tire pressure

warning light starts blinking.

A message is displayed on the multi-

information display. Also, “--” is dis-

played for inflation pressure of each

tire on the multi-information display

while the tire pressure warning sys-

tem determines the position.

Drive at approximately 25 mph (40 km/h) or more for approximately 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, ini-

tialization can be completed 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.

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Main

◆

Registering ID codes

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.

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

P. 200)

Press

of the meter control switches and select

Press

of the meter control switches and select “Vehicle

Settings”, and then press

Press

of the meter control switches and select “TPWS”, and

then press

Press

of the meter

control switches and select
“Change Wheel Set”, and then
press and hold

until the tire

pressure warning light starts
slowly blinking 3 times.

Then a message will be displayed on

the multi-information display.
When registration is being performed, the tire pressure warning light will blink for

approximately 1 minute then illuminate and “--” will be displayed for the inflation

pressure of each tire on the multi-information display.

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

Registration is complete when the tire pressure warning light turns off and the

inflation pressure of each tire is displayed on the multi-information display.
Even if the vehicle is not driven at approximately 25 mph (40 km/h) or more, reg-

istration can be completed 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. 490)

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■

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 cannot be properly repaired due to the size or location of

a cut or other damage

If you are not sure, consult with your Lexus dealer.

■

Replacing 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 malfunc-

tion.

■

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.

■

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.

■

Maximum load of tire

Check that the number given by dividing the maximum load by 1.10 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. 593)

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Main

■

Tire types

●

Summer tires
Summer tires are high-speed performance 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 installing snow tires, be sure to replace all four tires.

●

All season tires
All season tires are designed to provide better traction in snow and to be adequate for

driving in most winter 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 acceleration and handling perfor-

mance compared 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, construction 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. 387)

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■

If the tread on snow tires wears down below 0.16 in. (4 mm)

The effectiveness of the tires as snow tires is lost.

■

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 Lexus 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 specified level.

• If the spare tire is in a location subject to poor radio wave signal reception.

• If a large metallic object which can interfere with signal reception is put near the

spare tire.

• If tires not equipped with the 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, large display, air-

port or other facility that generates strong radio waves or electrical noise

• When carrying a portable radio, cellular phone, cordless phone or other wireless

communication device

If tire position information is not correctly 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.

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Main

■

The initialization operation

●

Make sure to carry out initialization after adjusting the tire inflation pressure.

Also, make sure the tires are cold before carrying out initialization or tire inflation pres-

sure adjustment.

●

If you have accidentally turned the engine switch off during initialization, it is not neces-

sary to manually restart the initialization again, as initialization will restart automatically

the next time the engine switch is turned to IGNITION ON mode.

●

If you accidentally perform initialization when initialization is not necessary, adjust the

tire inflation pressure to the specified level when the tires are cold, and conduct initial-

ization 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.

■

Warning performance of the tire pressure warning system

The warning of the tire pressure warning system will change in accordance with the con-

ditions 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 initialization of the tire pressure warning system has failed

●

Do not move the vehicle backward during initialization. Initialization is started again

from the beginning and it may take longer than usual.

●

Initialization may take longer to complete if the vehicle is driven on an unpaved road.

When performing initialization, drive on a paved road if possible. Depending on the

driving environment and condition of the tires, initialization will be completed in

approximately 10 to 30 minutes.
• If initialization is not complete after driving approximately 30 minutes, continue

driving for a while.

• If initialization is not complete after driving approximately 1 hour, park the vehicle in

a safe place for approximately 20 minutes. Then drive straight (with occasional left

and right turns) at approximately 25 mph (40 km/h) or more

for approximately 10

to 30 minutes.

If initialization is still not complete, have the vehicle inspected by your Lexus dealer.

: Except when making a left/right turn

●

In the following situations, the tire inflation pressure will not be recorded and the system

will not operate properly. Perform initialization again.
• If, when attempting to start initialization, the tire pressure warning light does not

blink 3 times.

• If, when the vehicle has been driven for about 20 minutes after performing initializa-

tion, the tire pressure warning light blinks for approximately 1 minute and then illumi-

nates.

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GX460_OM_OM60R43U_(U)

■

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 registration, make sure that no wheels with tire pressure

warning valve and transmitters installed are near the vehicle.

●

Initialize the tire pressure warning system after ID code registration. Initialization is dis-

abled if the system was initialized before registration.

●

After ID code registration, the tires are hot by driving. Initialize the tire pressure warn-

ing system after the tires become cold.

●

ID codes can be registered by yourself, but depending on the driving conditions and

driving environment, registration may take some time to complete.

■

Canceling the change wheel set mode

●

If turning the engine switch off when in the change wheel set mode before driving, the

change wheel set mode is canceled.

●

After driving when in the change wheel set mode, the change wheel set mode cannot

be canceled. To cancel the mode, perform the procedure for ID code registration again

and turn the engine switch off before driving.

●

If the change wheel set mode is canceled, the ID codes that have already been regis-

tered are communicated. When communication is finished, the tire pressure warning

light will turn off.

■

When ID code registration has failed

●

Registration may take long time or the ID codes may not be registered in the following

situations.
• When the vehicle is moved backward during registration.

Registration is started again from the beginning and it may take longer than usual.

• When another vehicle is running the side of the vehicle such as in heavy traffic.

It may take longer to detect the vehicle’s tire pressure warning valves and transmit-

ters.

• If tire pressure warning valves and transmitters are in the vehicle.

The ID codes may not be registered.

●

When performing registration, drive on a paved road if possible. Depending on the

driving environment and condition of the tires, registration will be completed in approx-

imately 10 to 30 minutes.
• If registration is not complete after driving approximately 30 minutes, continue driv-

ing for a while.

• If registration is not complete after driving approximately 1 hour, park the vehicle in a

safe place for approximately 20 minutes. Then drive straight (with occasional left

and right turns) at approximately 25 mph (40 km/h) or more

for approximately 10

to 30 minutes.

If registration is still not complete, have the vehicle inspected by your Lexus dealer.

: Except when making a left/right turn

●

When the tire pressure warning light does not blink slowly 3 times, the ID code will not

be registered and the system will not operate properly. Perform registration again.

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WARNING

■

Tire pressure warning system operation

The tire pressure warning system may not provide warning immediately if a tire bursts

or if sudden air leakage occurs.

■

When inspecting or replacing tires

Observe the following precautions to prevent accidents. Failure to do so may cause

damage to parts of the drive train as well as dangerous handling characteristics, which

may lead to an accident resulting in death or serious injury.

●

Do not mix tires of different makes, models or tread patterns.

Also, do not mix tires of remarkably different treadwear.

●

Do not use tire sizes other than those recommended by Lexus.

●

Do not mix differently constructed 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 previously.

■

When initializing the tire pressure warning system

Do not initialize 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.

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NOTICE

■

Repairing or replacing tires, wheels, tire pressure warning valves, transmitters and

tire valve caps

●

When removing or fitting the wheels, tires or the tire pressure warning valves and

transmitters, contact your Lexus dealer as the tire pressure warning valves and trans-

mitters may be damaged if not handled correctly.

●

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.

■

To avoid damage to the tire pressure warning valves and transmitters

When a tire is repaired with liquid sealants, the tire pressure warning valve and trans-

mitter may not operate properly. If a liquid sealant is used, contact your Lexus dealer or

other qualified service shop as soon as possible. Make sure to replace the tire pressure

warning valve and transmitter when replacing the tire. (



P. 489)

■

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.

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Tire valve
Tire pressure gauge

Remove the tire valve cap.
Press the tip of the tire pressure 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 pres-
sure.
If you add too much air, press the center of the valve to deflate.
After completing the tire inflation pressure measurement and adjustment,
apply soapy water to the valve and check for leakage.
Put the tire valve cap back on.

Inspection and adjustment procedure

2
3
4

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■

Tire inflation pressure check interval

You should check tire inflation pressure every two weeks, or at least once a month. Do

not forget to check the spare.

■

Effects of incorrect tire inflation pressure

Driving with incorrect tire inflation pressure may result in the following:

●

Reduced fuel economy

●

Reduced driving comfort and poor handling

●

Reduced tire life due to wear

●

Reduced safety

●

Damage to the drive train

If a tire needs frequent inflating, have it checked by your Lexus dealer.

■

Instructions for checking tire inflation pressure

When checking tire inflation pressure, observe the following:

●

Check only when the tires are cold.

If your vehicle has been parked for at least 3 hours and 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.

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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 serious 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 damage while driving (due to road hazards, expansion

joints, sharp edges in the road, etc.)

NOTICE

■

When inspecting and adjusting 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.

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Wheels

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

Replacement wheels are available at your Lexus dealer.

: Conventionally referred to as “offset”.

Lexus does not recommend using the following:

●

Wheels of different sizes or types

●

Used wheels

●

Bent wheels that have been straightened

●

Use only Lexus wheel nuts and wrenches designed for use with your alumi-
num wheels.

●

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

●

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

●

Use only Lexus genuine balance weights or equivalent and a plastic or rubber
hammer when balancing your wheels.

■

When replacing wheels

The wheels of your vehicle are equipped with tire pressure warning valves and transmit-

ters that allow the tire pressure warning system to provide advance warning in the event

of a loss in tire inflation pressure. Whenever wheels are replaced, tire pressure warning

valves and transmitters must be installed. (

P. 489)

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

Wheel selection

Aluminum wheel precautions

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