LEXUS LS 500 (2019 year). Instruction - part 24

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The battery is located in the trunk 
under the luggage mat.

Removing the luggage mat: 

P.340

■

Before recharging

When recharging, the battery produces 

hydrogen gas which is flammable and 

explosive. Therefore, observe the following 

precautions before recharging:

●

If recharging with the battery installed on 

the vehicle, be sure to disconnect the 

ground cable.

●

Make sure the engine switch on the char-

ger is off when connecting and discon-

necting the charger cables to the battery.

■

After recharging/reconnecting the bat-

tery

●

Unlocking the doors using the smart 

access system with push-button start may 

not be possible immediately after recon-

necting 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 nor-

mally 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 

NOTICE

■

Do not use any fluid other than 

washer fluid

Do not use soapy water or engine anti-

freeze 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 neces-

sary.

Refer to the freezing temperatures listed 

on the label of the washer fluid bottle.

Battery

Location

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battery was disconnected. Make sure to 

turn off the engine before disconnecting 

the battery. Take extra care when con-

necting 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.

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

WARNING

■

Chemicals in the battery

The battery contains poisonous and cor-

rosive sulfuric acid and may produce 

hydrogen gas which is flammable and 

explosive. To reduce the risk of death or 

serious injury, take the following precau-

tions while working on or near the bat-

tery:

●

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 

insufficient ventilation.

■

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 follow the procedure above if nec-

essary.

●

If you accidentally swallow electrolyte

Drink a large quantity of water or milk. 

Get emergency medical attention 

immediately.

■

When replacing the battery

Use a battery designed for this vehicle. 

Failure to do so may cause gas (hydro-

gen) to enter the passenger compart-

ment, causing a fire or explosion.
For replacement of the battery, contact 

your Lexus dealer.

NOTICE

■

When recharging the battery

Never recharge the battery while the 

engine is running. Also, be sure all acces-

sories are turned off.

Exterior

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Terminals
Hold-down clamp

Check the battery condition by indica-
tor color.

Blue: Good condition
Red: Charging is necessary.
Have the vehicle inspected by your 
Lexus dealer.
Clear: Replacement is necessary.
Have the battery checked by your 
Lexus dealer.

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.

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 indica-
tors are showing on a tire.

Checking the battery condition

A
B

A
B

C

Tires

Replace or rotate tires in accor-
dance with maintenance schedules 
and treadwear.

Checking tires

A
B
C

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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 loca-

tion of a cut or other damage

If you are not sure, consult with your Lexus 

dealer.

■

Tire life

Any tire over 6 years old must be checked 

by a qualified technician even if it has sel-

dom 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, which-

ever is greater.
For the GAWR, see the Certification Label.

For the maximum load of the tire, see the 

load limit at maximum cold tire inflation 

pressure mentioned on the sidewall of the 

tire. (

P.457)

■

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 recom-
mended. 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, 
however, 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 per-
formance 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 equip-
ment, make sure your snow tires also have 
radial construction. Do not install studded 
tires without first checking local regula-
tions for possible restrictions. Snow tires 
should be installed on all wheels. 
(

P.300)

■

If the tread on snow tires wears down 

below 0.16 in. (4 mm)

The effectiveness of the tires as snow tires is 

lost.

WARNING

■

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 danger-

ous handling characteristics, which may 

lead to an accident resulting in death or 

serious injury.

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

Vehicles with front and rear tires of 
the same size

Rotate the tires in the order shown.

To equalize tire wear and extend tire life, 
Lexus recommends that tire rotation is car-
ried out at the same interval as tire inspec-
tion.
Do not fail to initialize the tire pressure 
warning system after tire rotation.



Vehicles with front and rear tires of 
differing sizes

Tires cannot be rotated.

When run-flat tires are installed, the 
vehicle can be driven for a maximum of 
100 miles (160 km) at a speed below 
50 mph (80 km/h) after any tire goes 
flat. (However, the vehicle speed may 
not increase to near 50 mph [80 
km/h] depending on weather or driv-
ing conditions.)

A run-flat tire has a 

 mark on 

the side wall.

Make sure to replace the flat tire before the 
vehicle has been driven for near 100 miles 
(160 km). Also, do not use a repaired tire.

■

Run-flat tires

●

The run-flat tires are for only this vehicle. 

Do not use the tires on other vehicles.

●

Do not mix run-flat tires and normal tires.

●

If non-genuine Lexus wheels are used, it 

may be impossible to sufficiently demon-

strate the performance of run-flat tires.

Your vehicle is equipped with a tire 
pressure warning system that uses tire 
pressure warning valves and transmit-
ters to detect low tire inflation pressure 

WARNING

●

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.

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 cushion-

ing ability of the tires. In addition, driving 

on rough roads may cause damage to 

the tires themselves, as well as the vehi-

cle’s wheels and body.

Tire rotation

Run-flat tires

Tire pressure warning system

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before serious problems arise.
 The tire pressure detected by the 

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

P.80)

 If the tire pressure drops below a 

predetermined level, the driver is 
warned by a screen display and a 
warning light. (

P.419)

■

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 display the 

tire inflation pressure after the engine 

switch is turned to IGNITION ON mode. 

It may also take a few minutes to display 

the tire inflation pressure after inflation 

pressure has been adjusted.

●

Tire inflation pressure changes with tem-

perature. The displayed values may also 

be different from the values measured 

using a tire pressure gauge.

■

Situations in which the tire pressure 

warning system may not operate prop-

erly

●

In the following cases, the tire pressure 

warning system may not operate prop-

erly.

• If non-genuine Lexus wheels are used.

• If a tire has been replaced with a tire that 

is not an OE (Original Equipment) tire.

• If a tire has been replaced with a tire that 

is not of the specified size.

• If tire chains, etc. are installed.

• 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 vehi-

cle, particularly around the wheels or 

wheel housings.

• If the tire inflation pressure is much higher 

than the specified level.

• If wheels not equipped with tire pressure 

warning valves and transmitter are used.

• If the ID code on the tire pressure warn-

ing valves and transmitters is not regis-

tered in the tire pressure warning 

computer.

●

Performance may be affected in the fol-

lowing situations.

• When driving near a TV tower, electric 

power plant, gas station, radio station, 

large display, airport or other facility that 

generates strong radio waves or electri-

cal 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 changing 

the location of the vehicle as the radio wave 

conditions may change.

●

When the vehicle is stopped, the time 

taken for the warning to start or turn off 

may be longer.

●

When the inflation pressure of a tire 

drops rapidly, for example when a tire has 

burst, the warning may not operate.

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■

Warning performance of the tire pres-

sure warning system

The warning of the tire pressure warning 

system will change in accordance with driv-

ing conditions. 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 initial-

ized.

■

Tire pressure warning system certification



For vehicles sold in the U.S.A., Hawaii, Guam and Puerto Rico

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

For vehicles sold in Canada

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

P.389)

■

Replacing tires and wheels

If the ID codes of the tire pressure warning 

valve and transmitters are not registered, 

the tire pressure warning system will not 

work properly. In this case, after driving for 

about 20 minutes, the tire pressure warning 

light will blink for approximately 1 minute 

and then illuminate to indicate a system 

malfunction.

Installing tire pressure warning 
valves and transmitters

NOTICE

■

Repairing or replacing tires, wheels, 

tire pressure warning valves, trans-

mitters 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 warn-

ing valves and transmitters may be 

damaged if not handled correctly.

●

Make sure to install the tire valve caps. 

If the tire valve caps are not installed, 

water may enter the valves of the tire 

pressure warning valve and transmit-

ters and the valves may become stuck.

●

When replacing tire valve caps, do not 

use tire valve caps other than those 

specified. The cap may become stuck.

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■

The tire pressure warning system 
must be initialized in the following 
circumstances:

 When the tire inflation pressure is 

changed such as when changing 
traveling speed or load weight.

 When the tire inflation pressure is 

changed such as when the tire size 
is changed.

 When rotating the tires.
 After performing the transmitter ID 

code registration procedure. 
(

P.389)

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

■

How to initialize the tire pressure 
warning system

1

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

The initialization procedure cannot be 

started while the vehicle is moving.

2

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

Make sure to adjust the tire pressure to the 

specified cold tire inflation pressure level. 

The tire pressure warning system will oper-

ate based on this pressure level.

3

Start the engine.

4

Press 

 or 

 of the meter con-

trol switch to select 

.

5

Press 

 or 

 to select “Vehicle 

Settings” and then press 

.

6

Press 

 or 

 to select “TPWS” 

and then press 

.

7

Press 

 or 

 to select “Set 

Pressure”. Then press and hold 

 

until the tire pressure warning light 
blinks 3 times.

Then a message will be displayed on the 

multi-information display.
“---” will be displayed on the multi-informa-

tion display for the inflation pressure of 

each tire while initialization is being per-

formed.

8

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

Initialization is complete when the position 

of each tire is determined and the inflation 

pressure of each tire is displayed on the 

multi-information display.
Initialization may take longer than normal 

to complete if the vehicle speed cannot be 

maintained at approximately 25 mph (40 

km/h) or more. If initialization cannot be 

completed after driving for 1 hour or more, 

park the vehicle in a safe place, turn the 

engine switch off and wait 20 minutes or 

more before performing the driving proce-

dure again. (

P.389)

Initializing the tire pressure 
warning system

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Initialization procedure

●

Make sure to perform the initialization 

procedure after adjusting the tire inflation 

pressure.

Also, make sure the tires are cold before 

performing the initialization procedure or 

adjusting the tire inflation pressure.

●

If the engine switch is turned off during 

initialization, it is not necessary to restart 

the initialization procedure from the 

beginning as it will begin automatically 

when the engine switch is turned back to 

IGNITION ON mode.

●

If initialization has accidentally been 

started when it is not necessary, adjust 

the tire inflation pressure to the specified 

level when the tires are cold and then 

perform the initialization procedure 

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 system is not 

initialized properly

●

In the following situations, initialization 

may take longer than usual to be com-

pleted or may not be possible. (Usually, 

the vehicle will need to be driven for 

approximately 10 to 30 minutes to com-

plete initialization.) If initialization is not 

complete after driving approximately 30 

minutes, continue driving for a while.

• If the vehicle is driven on an unpaved 

road, it may take longer to complete ini-

tialization.

• If the vehicle is backed up while perform-

ing initialization, data collected during ini-

tialization will be cleared and it will take 

longer than normal to complete.

• 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 

warning valve and transmitters of your 

vehicle over those of other vehicles.

If initialization is not complete after driving 

for approximately 1 hour, park the vehicle in 

a safe place for approximately 20 minutes 

and then drive the vehicle again.

●

In the following situations, initialization 

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 initialization, 

the tire pressure warning light does not 

blink 3 times.

• If, when the vehicle has been driven for 

about 20 minutes after performing ini-

tialization, the tire pressure warning light 

blinks for approximately 1 minute and 

then illuminates.

●

If initialization cannot be completed after 

performing the above procedure, con-

tact your Lexus dealer.

Every tire pressure warning valve and 
transmitter has a unique ID code. 
When replacing a tire pressure warn-
ing valve and transmitter, it is necessary 
to register the ID codes.
The ID codes can be registered on 

 

of the multi-information display.

1

Park the vehicle in a safe place, turn 
the engine switch off, wait 20 min-
utes or more, and then start the 
engine.

WARNING

■

When initializing the tire pressure 

warning system

Do not initialize the tire pressure warning 

system 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

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2

Press 

 or 

 of the meter con-

trol switch to select 

.

3

Press 

 or 

 to select “Vehicle 

Settings” and then press 

.

4

Press 

 or 

 to select “TPWS” 

and then press 

.

5

Press 

 or 

 to select “Change 

Wheel Set”. Then press and hold 

 until the tire pressure warning 

light blinks slowly 3 times.

Then a message will be displayed on the 

multi-information display.
When registration is being performed, 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-information 

display.

6

Drive straight (with occasional left 
and right turns) 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.
Registration may take longer than normal 

to complete if the vehicle speed cannot be 

maintained at approximately 25 mph (40 

km/h) or more. If registration cannot be 

completed after driving for 1 hour or more, 

perform the registration procedure again 

from the beginning.  (

P.390)

After registering the ID codes, make sure 

to initialize the tire pressure warning sys-

tem. (

P.388)

■

When registering ID codes

●

Before performing ID code registration, 

make sure that no wheels with tire pres-

sure warning valve and transmitters 

installed are near the vehicle.

●

Make sure to initialize the tire pressure 

warning system after registering the ID 

codes. If the system is initialized before 

registering the ID codes, the initialized 

values will be invalid.

●

As the tires will be warm when registra-

tion is completed, make sure to allow the 

tires to cool before performing initializa-

tion.

■

Canceling ID code registration

●

To cancel ID code registration after it has 

been started, turn the engine switch off 

before driving the vehicle.

If the vehicle is driven after ID code regis-

tration is started, to cancel registration, 

perform the ID code registration start 

procedure again and turn the engine 

switch off before driving.

●

If ID code registration has been canceled, 

the tire pressure warning light will blink 

for approximately 1 minute when the 

engine switch is turned to IGNITION 

ON mode and then illuminate. The tire 

pressure warning system will be opera-

tional 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 can-

celled correctly. To cancel registration, 

perform the ID code registration start 

procedure again and then turn the engine 

switch off before driving.

■

If ID codes are not registered properly

●

In the following situations, ID code regis-

tration may take longer than usual to be 

completed or may not be possible. (Usu-

ally, the vehicle will need to be driven for 

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approximately 10 to 30 minutes to com-

plete ID code registration.)

If ID code registration is not complete 

after driving for approximately 30 min-

utes, continue driving for a while.

• If the vehicle is driven on an unpaved 

road, it may take longer than normal to 

complete registration.

• If the vehicle is backed up while perform-

ing registration, data collected during 

registration will be cleared, and it will take 

longer than normal to complete.

• 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 

warning valve and transmitters of your 

vehicle over those of other vehicles.

• If a wheel with a tire pressure warning 

valve and transmitter installed is inside or 

near the vehicle, registration of the ID 

codes for the installed wheels may not be 

possible.

If ID registration is not complete after driv-

ing for approximately 1 hour, park the vehi-

cle in a safe place for approximately 20 

minutes and then perform the ID code reg-

istration procedure again.

●

In the following situations, ID code regis-

tration will not be started or was not com-

pleted properly and the system will not 

operate properly. Perform the ID code 

registration procedure again.

• If, when attempting to start ID code regis-

tration, 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 warn-

ing light blinks for approximately 1 minute 

and then illuminates.

●

If ID code registration cannot be com-

pleted after performing the above proce-

dure, contact your Lexus dealer.

 Stop the vehicle in a safe place on a 

hard, flat surface.

 Set the parking brake.
 Shift the shift position to P.
 Disabling the height control. (if 

equipped) (

P.293)

 Stop the engine. 

■

Jack and tools

As your vehicle is equipped with run-flat 

tires, the following tools for replacing a tire 

are not included with your vehicle. They can 

be purchased at your Lexus dealer.

●

Wheel nut wrench

●

Jack

●

Jack handle

Replacing the tire

When raising your vehicle with a 
jack, position the jack correctly.
Improper placement may damage 
your vehicle or cause injury.
If necessary tire replacement 
seems difficult to perform, contact 
your Lexus dealer.

Before jacking up the vehicle

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6-3. Do-it-yourself maintenance

LS500_OM_(U)_1809

1

Chock the tires.

WARNING

■

Using the tire jack

Observe the following precautions.

Improper use of the tire jack may cause 

the vehicle to suddenly fall off the jack, 

leading to death or serious injury.

●

Do not use the tire jack for any pur-

pose other than replacing tires or 

installing and removing tire chains.

●

Do not use other tire jacks for replac-

ing tires on this vehicle.

●

Put the jack properly in its jack point.

●

Do not put any part of your body under 

the vehicle while it is supported by the 

jack.

●

Do not start the engine or drive the 

vehicle while the vehicle is supported 

by the jack.

●

Do not raise the vehicle while some-

one is inside.

●

When raising the vehicle, do not put an 

object on or under the jack.

●

Do not raise the vehicle to a height 

greater than that required to replace 

the tire.

●

Use a jack stand if it is necessary to get 

under the vehicle.

●

Make sure to disable all functions of 

the vehicle height control of the elec-

tronically modulated air suspension 

and then stopping the engine. 

(

P.293)

●

When lowering the vehicle, make sure 

that there is no-one near the vehicle. If 

there are people nearby, warn them 

vocally before lowering.

■

Replacing a flat tire for vehicles with 

power trunk opener and closer (if 

equipped)

In cases such as when replacing tires, 

make sure to turn off the trunk opener 

main switch (

P.110). Failure to do so 

may cause the trunk lid to operate unin-

tentionally if the power trunk opener and 

closer switch is accidentally touched, 

resulting in hands and fingers being 

caught and injured.

Removing a tire

Tire

Wheel chock posi-
tions

Front left-hand side

Behind the rear 
right-hand side tire

Front right-hand 
side

Behind the rear 
left-hand side tire

Rear left-hand side

In front of the front 
right-hand side tire

Rear right-hand side

In front of the front 
left-hand side tire

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2

Slightly loosen the wheel nuts (one 
turn).

3

Turn the tire jack portion   by 
hand until the notch of the jack is in 
contact with the jack point.

The jack point guides are located under 

the rocker panel. They indicate the jack 

point positions.

4

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

5

Remove all the wheel nuts and the 
tire.

When resting the tire on the ground, place 

the tire so that the wheel design faces up to 

avoid scratching the wheel surface.

1

Remove any dirt or foreign matter 
from the wheel contact surface.

If foreign matter is on the wheel contact 

surface, the wheel nuts may loosen while 

the vehicle is in motion, causing the tire to 

come off.

2

Install the tire and loosely tighten 
each wheel nut by hand by approxi-
mately the same amount.

Turn the wheel nuts until the washers come 

A

WARNING

■

Replacing a tire

Do not touch the disc wheels or the area 

around the brakes immediately after the 

vehicle has been driven.
After the vehicle has been driven the disc 

wheels and the area around the brakes 

will be extremely hot. Touching these 

areas with hands, feet or other body 

parts while changing a tire, etc. may 

result in burns.

Installing the tire

394

6-3. Do-it-yourself maintenance

LS500_OM_(U)_1809

into contact with the disc wheel.

Disc wheel
Washer

3

Lower the vehicle.

4

Firmly tighten each wheel nut two 
or three times in the order shown in 
the illustration.
Tightening torque:
103 ft•lbf (140 N•m, 14.3 kgf•m)

A
B

WARNING

■

When installing the tire

Failure to follow these precautions could 

cause the wheel nuts to loosen and the 

tire to fall off, resulting in death or serious 

injury.

●

Never use oil or grease on the wheel 

bolts or wheel nuts.

Oil and grease may cause the wheel 

nuts to be excessively tightened, 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, causing a serious accident. 

Remove any oil or grease from the 

wheel bolts or wheel nuts.

●

Have the wheel nuts tightened with a 

torque wrench to 103 ft•lbf (140 N•m, 

14.3 kgf•m) as soon as possible after 

changing wheels.

●

Do not attach a heavily damaged 

wheel ornament, as it may fly off the 

wheel while the vehicle is moving.

●

When installing a tire, only use wheel 

nuts that have been specifically 

designed for that wheel.

●

If there are any cracks or deformations 

in the bolt screws, nut threads or bolt 

holes of the wheel, have the vehicle 

inspected by your Lexus dealer.

NOTICE

■

Repairing or replacing tires, wheels, 

tire pressure warning valves, trans-

mitters and tire valve caps

P.387

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

P.452)

Tire valve
Tire pressure gauge

1

Remove the tire valve cap.

2

Press the tip of the tire pressure 
gauge onto the tire valve.

3

Read the pressure using the gauge 
gradations.

4

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

5

After completing the tire inflation 
pressure measurement and adjust-
ment, apply soapy water to the 
valve and check for leakage.

6

Put the tire valve cap back on.

■

Tire inflation pressure check interval

You should check tire inflation pressure 

every two weeks, or at least once a month. 

Do not forget to check the spare.

■

Effects of incorrect tire inflation pres-

sure

Driving with incorrect tire inflation pressure 

may result in the following:

●

Reduced fuel economy

●

Reduced driving comfort and poor han-

dling

●

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 or has not been driven for 

more than 1 mile or 1.5 km, you will get an 

accurate cold tire inflation pressure read-

Tire inflation pressure

Checking the specified tire infla-
tion pressure

Inspection and adjustment pro-
cedure

A
B