Lexus ES300H (2024 year). Manual in english

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6-3. Do-it-yourself maintenance

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

Oil quantity (Low level mark



Refill upper limit mark)

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



Item

Clean funnel

■

Adding engine oil

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

Remove the oil filler cap by turning
it counterclockwise.

Add engine oil slowly, checking the
dipstick.

Make sure that the oil level does not

exceed the refill upper limit mark and is

between the low level mark and refill upper

limit mark.

Low level mark

Refill upper limit mark

The shape of the dipstick may differ
depending on the type of vehicle or

engine.

Install the oil filler cap by turning it
clockwise.

■

After changing the engine oil

The engine oil maintenance data should be

reset. Perform the following procedures:

While the vehicle is stopped, press

of the meter control switches.

Press

of the meter control

switches, and select

Press

of the meter control

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

Press

of the meter control

switches, select “Oil Maintenance”, and
then press “OK”.

Select “Yes” and then press “OK”.

A message will be displayed on the multi-

information display when the reset proce-

dure has been completed.

WARNING

■

Used engine oil

●

Used engine oil contains potentially

harmful contaminants which may

cause skin disorders such as inflamma-

tion and skin cancer, so care should be

taken to avoid prolonged and

repeated contact. To remove used

engine oil from your skin, wash thor-

oughly 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 house-

hold trash, in sewers or onto the

ground.

Call your Lexus dealer, service station

or auto parts store for information

concerning recycling or disposal.

●

Do not leave used engine oil within the

reach of children.

322

6-3. Do-it-yourself maintenance

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

■

Engine coolant reservoir

Reservoir cap

“F” line

“L” line

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



P.391)

■

Power control unit coolant reser-
voir

Reservoir cap

“FULL” line

“LOW” line

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



P.392)

■

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 mix-

ture of 50% coolant and 50% deionized

water. (Minimum temperature: -31°F [-

35°C])
Canada:

“Toyota Super Long Life Coolant” is a mix-

ture of 55% coolant and 45% deionized

water. (Minimum temperature: -44°F [-

42°C])
For more details about coolant, contact

your Lexus dealer.

■

If the coolant level drops within a short

time of replenishing

Visually check the radiator, hoses,

engine/power control unit coolant reser-

voir caps, 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.

NOTICE

■

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 prop-

erly tightened.

Checking the coolant

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



Fluid type

FMVSS No.116 DOT 3 or SAE J1703
brake fluid
FMVSS No.116 DOT 4 or SAE J1704
brake fluid



Item

Clean funnel

■

Brake fluid can absorb moisture from

the air

Excess moisture in the brake fluid can

cause a dangerous loss of braking effi-

ciency. Use only newly opened brake fluid.

WARNING

■

When the hybrid system is hot

Do not remove the engine/power con-

trol unit coolant reservoir caps or the

radiator cap. (



P.394)

The cooling system may be under pres-

sure 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 cooling. Be sure to read

the antifreeze or coolant label.

■

If you spill coolant

Be sure to wash it off with water to pre-

vent it from damaging parts or paint.

Checking the radiator and con-
denser

WARNING

■

When the hybrid system is hot

Do not touch the radiator or condenser

as they may be hot and cause serious

injuries, such as burns.

Checking and adding the brake
fluid

324

6-3. Do-it-yourself maintenance

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

WARNING

■

When filling the reservoir

Take care as brake fluid can harm your

hands and eyes and damage painted sur-

faces.

If fluid gets on your hands or in your eyes,

flush the affected area with clean water

immediately.
If you still experience discomfort, see a

doctor.

NOTICE

■

If the fluid level is low or high

It is normal for the brake fluid level to go

down slightly as the brake pads wear out

or when the fluid level in the accumulator

is high.

If the reservoir needs frequent refilling,

there may be a serious problem.

Adding the washer fluid

WARNING

■

When adding washer fluid

Do not add washer fluid when the hybrid

system is hot or operating as washer fluid

contains alcohol and may catch fire if

spilled on the engine etc.

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.

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The 12-volt battery is located on the
right-hand side of the trunk.

■

Before recharging

When recharging, the 12-volt battery pro-

duces hydrogen gas which is flammable

and explosive. Therefore, observe the fol-

lowing precautions before recharging:

●

If recharging with the 12-volt battery

installed on the vehicle, be sure to dis-

connect the ground cable.

●

Make sure the power switch on the char-

ger is off when connecting and discon-

necting the charger cables to the 12-volt

battery.

■

After recharging/reconnecting the 12-

volt battery

●

Unlocking the doors using the smart

access system with push-button start may

not be possible immediately after recon-

necting the 12-volt battery. If this hap-

pens, use the wireless remote control or

the mechanical key to lock/unlock the

doors.

●

Start the hybrid system with the power

switch in ACCESSORY mode. The

hybrid system may not start with the

power switch turned off. However, the

hybrid system will operate normally from

the second attempt.

●

The power switch mode is recorded by

the vehicle. If the 12-volt battery is recon-

nected, the vehicle will return the power

switch mode to the status it was in before

the 12-volt battery was disconnected.

Make sure to turn off the power switch

before disconnect the 12-volt battery.

Take extra care when connecting the 12-

volt battery if the power switch mode

prior to discharge is unknown.

If the hybrid system will not start even after

multiple attempts at all methods above,

contact your Lexus dealer.

12-volt battery

Location

WARNING

■

Chemicals in the 12-volt battery

The 12-volt battery contains poisonous

and corrosive sulfuric acid and may pro-

duce hydrogen gas which is flammable

and explosive. To reduce the risk of

death or serious injury, take the following

precautions while working on or near the

12-volt battery:

●

Do not cause sparks by touching the

12-volt battery terminals with tools.

●

Do not smoke or light a match near the

12-volt battery.

●

Avoid contact with eyes, skin and

clothes.

●

Never inhale or swallow electrolyte.

●

Wear protective safety glasses when

working near the 12-volt battery.

●

Keep children away from the 12-volt

battery.

■

Where to safely charge the 12-volt

battery

Always charge the 12-volt battery in an

open area. Do not charge the 12-volt

battery in a garage or closed room

where there is insufficient ventilation.

■

How to recharge the 12-volt battery

Recharge at a current of 5 A or less and

make sure that the recharging period

does not exceed a total of 12 hours.

326

6-3. Do-it-yourself maintenance

Lift the luggage mat up.

Make sure that the 12-volt battery ter-
minals are not corroded and that there
are no loose connections, cracks, or
loose clamps.

Terminals

Hold-down clamp

WARNING

■

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 removing the 12-volt battery

terminals

Do not disconnect the negative (-) termi-

nal on the body side. The disconnected

negative (-) terminal may touch the posi-

tive (+) terminal, which may cause a short

and result in death or serious injury.

■

When there is insufficient battery

fluid

Do not use if there is insufficient fluid in

the 12-volt battery. There is a possible

danger that the 12-volt battery may

explode.

NOTICE

■

When recharging the 12-volt battery

Never recharge the 12-volt battery while

the hybrid system is operating. Also, be

sure all accessories are turned off.

Removing the 12-volt battery
cover

Exterior

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Check if the treadwear indicators are
showing on the tires. Also check the
tires for uneven wear, such as exces-
sive 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 indica-

tors are showing on a tire.

■

When to replace your vehicle’s tires

●

Tires should be replaced if:

• The treadwear indicators are showing on

a tire.

• You have tire damage such as cuts, splits,

cracks deep enough to expose the fabric,

and bulges indicating internal damage

• A tire goes flat repeatedly or cannot be

properly repaired due to the size or loca-

tion of a cut or other damage

If you are not sure, consult your Lexus
dealer.

●

Vehicles with 17-inch tires:

The wheel angle differs from vehicles
equipped with 18-inch/19-inch tires. There-
fore, 18-inch/19-inch tires cannot be
installed, as sufficient gaps with surrounding
parts cannot be ensured.

■

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.

■

Low profile tires (18-inch/19-inch tires)

Generally, low profile tires will wear more

rapidly and tire grip performance will be

reduced on snowy and/or icy roads when

compared to standard tires. Be sure to use

snow tires on snowy and/or icy roads and

drive carefully at a speed appropriate for

road and weather conditions.

■

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.408)

Tires

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

Checking tires

A
B
C

328

6-3. Do-it-yourself maintenance

■

Tire types

●

Summer tires

Summer tires are high-speed perfor-

mance tires best suited to highway driv-

ing under dry conditions. Since summer

tires do not have the same traction per-

formance as snow tires, summer tires are

inadequate for driving on snow-covered

or icy roads. For driving on snow-cov-

ered 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 ade-

quate for driving in most winter condi-

tions as well as for use year-round. All

season tires, however, do not have ade-

quate traction performance compared

with snow tires in heavy or loose snow.

Also, all season tires fall short in accelera-

tion and handling performance com-

pared with summer tires in highway

driving.

●

Snow tires

For driving on snow-covered roads or icy

roads, we recommend using snow tires. If

you need snow tires, select tires of the

same size, 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

regulations for possible restrictions.

Snow tires should be installed on all

wheels. (



P.259)

■

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 drivetrain as well as danger-

ous 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 tow if your vehicle has a com-

pact spare tire installed.

●

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.

■

Low profile tires (18-inch/19-inch

tires)

Low profile tires may cause greater dam-

age than usual to the tire wheel when

sustaining impact from the road surface.

Therefore, pay attention to the following:

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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.

■

When rotating the tires

Make sure that the power switch is off. If the

tires are rotated while the power switch is in

ON mode, the tire position information will

not be updated.
If this accidentally occurs, either turn the

power switch to off and then to ON mode,

or initialize the system after checking that

the tire pressure is properly adjusted.

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
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.364)



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



P.85)

The illustration used is intended as an
example, and may differ from the image
that is actually displayed on the multi-infor-
mation display.

■

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 power

switch is turned to ON mode.

It may also take a few minutes to display

the tire inflation pressure after inflation

pressure has been adjusted.

NOTICE

●

Be sure to use proper tire inflation

pressure. If tires are under-inflated,

they may be damaged more severely.

●

Avoid potholes, uneven pavement,

curbs and other road hazards. Failure

to do so may lead to severe tire and

wheel damage.

■

If tire inflation pressure of each tire

becomes low while driving

Do not continue driving, or your tires

and/or wheels may be ruined.

Tire rotation

Tire pressure warning system

330

6-3. Do-it-yourself maintenance

●

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.

• 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 vehi-

cle, particularly around the wheels or

wheel housings.

• If the tire inflation pressure is extremely

higher than the specified level.

• If wheel without tire pressure warning

valves and transmitters 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.

• Near a TV tower, electric power plant,

gas station, radio station, large display,

airport 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 rap-

idly for example when a tire has burst, the

warning may not function.

■

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.

When replacing tires or wheels, tire
pressure warning valves and transmit-
ters 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.333)

■

When replacing the tires and wheels

If the ID code of the tire pressure warning

valve and transmitter is not registered, the

tire pressure warning system will not work

properly. After driving for about 20 min-

utes, the tire pressure warning light blinks

for 1 minute and stays on to indicate a sys-

tem 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.

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6-3. Do-it-yourself maintenance

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■

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



When rotating the tires.



When the tire inflation pressure is
changed when changing traveling
speed.



When the tire inflation pressure is
changed such as when changing tire
size. (When there are multiple spec-
ified pressures)



After registering the ID codes.
(



P.333)

When the tire pressure warning sys-
tem is initialized, the current tire infla-
tion pressure is set as the benchmark
pressure.

■

How to initialize the tire pressure
warning system

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

Initialization cannot be performed while

the vehicle is moving.

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

Start the hybrid system (



P.148)

Press

of the meter con-

trol switches and select

Press

of the meter con-

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

Press

of the meter con-

trol switches and select “TPWS”,
then press “OK”.

Press

of the meter con-

trol switches and select “Set Pres-
sure”. Then press and hold “OK”
until the tire pressure warning light
starts blinking.

A message is displayed on the multi-infor-

mation display. Also, “--” is displayed for

inflation pressure of each tire on the multi-

information display while the tire pressure

NOTICE

●

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 seal-

ants, the tire pressure warning valve and

transmitter 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.330)

Initializing the tire pressure
warning system

332

6-3. Do-it-yourself maintenance

warning system determines the position.

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

When initialization is complete, the infla-

tion pressure of each tire will be displayed

on the multi-information display.
Even if the vehicle is not driven at approxi-

mately 25 mph (40 km/h) or more, initial-

ization 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.

■

When initializing

●

Initialization is performed while driving at

a vehicle speed of approximately 25 mph

(40 km/h) or more.

●

Make sure to carry out initialization after

adjusting the tire inflation pressure.

Also, make sure the tires are cold before

carrying out initialization or tire inflation

pressure adjustment.

●

The tire pressure warning system can be

initialized by yourself, but depending on

the driving conditions and driving envi-

ronment, initialization may take some

time to complete.

■

The initialization operation

●

If you have accidentally turned the power

switch off during initialization, it is not

necessary to manually restart the initial-

ization again, as initialization will restart

automatically the next time the power

switch is turned to 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

initialization again.

●

While the position of each tire is being

determined and the inflation pressures

are not being displayed on the multi-

information display, if the inflation pres-

sure 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. Normally,

initialization completes within approxi-

mately 30 minutes.

• Vehicle is not driven at approximately 25

mph (40 km/h) or more

• Vehicle is driven on unpaved roads

• Vehicle is driven near other vehicles and

system cannot recognize tire pressure

warning valve and transmitters of your

vehicle over those of other vehicles

If initialization does not complete after driv-

ing for 1 hour or more, park the vehicle in a

safe place for approximately 20 minutes

and then drive the vehicle again.

●

If the vehicle is reversed during initializa-

tion, the data up to that point is reset, so

perform the initialization procedure

again from the beginning.

●

In the following situations, initialization

will not be started or was not completed

properly and the system will not operate

properly. Perform the initialization pro-

cedure 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 initial-

ization, the tire pressure warning light

blinks for approximately 1 minute and

then illuminates.

If initialization cannot be completed after

performing the above procedure, contact

your Lexus dealer.

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6-3. Do-it-yourself maintenance

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Every tire pressure warning valve and
transmitter has a unique ID code.
When replacing a tire pressure warn-
ing valve and transmitter, it is neces-
sary to register the ID code.
When registering the ID codes, per-
form the following procedure.

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



P.148)

Press

of the meter con-

trol switches and select

Press

of the meter con-

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

Press

of the meter con-

trol switches and select “TPWS”,
and then press “OK”.

Press

of the meter con-

trol switches and select “Change
Wheel Set”. Then press and hold
“OK” until the tire pressure warn-

ing 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 pres-

sure of each tire on the multi-information

display.

Drive at approximately 25 mph
(40 km/h) or more for approxi-
mately 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. Registra-

tion may take longer than normal to com-

plete 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.

Initialize the tire pressure warning
system. (



P.331)

■

When registering ID codes

●

ID code registration is performed while

driving at a vehicle speed of approxi-

mately 25 mph (40 km/h) or more.

●

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

■

When initializing the tire pressure

warning system

Do not initialize tire inflation pressure

without first adjusting the tire inflation

pressure to the specified level. Other-

wise, 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 nor-

mal.

Registering ID codes

334

6-3. Do-it-yourself maintenance

warning system after registering the ID

codes. If the system is initialized before

registering 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.

■

Canceling ID code registration

●

To cancel ID code registration after it has

been started, turn the power 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 power

switch off before driving.

●

If ID code registration has been can-

celed, the tire pressure warning light will

blink for approximately 1 minute when the

power switch is turned to ON mode and

then illuminate. The tire pressure warning

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 correctly. To cancel registra-

tion, perform 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 regis-

tration may take longer than usual to be

completed or may not be possible. Nor-

mally, registration completes within

approximately 30 minutes.

• Vehicle is not parked for approximately

20 minutes or more before driving

• Vehicle is not driven at approximately 25

mph (40 km/h) or more

• Vehicle is driven on unpaved roads

• Vehicle is driven near other vehicles and

system cannot recognize 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, perform the ID

code registration procedure again from

the beginning.

●

If the vehicle is reversed during registra-

tion, the data up to that point is reset, so

perform the registration procedure again

from the beginning.

●

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.

335

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.403)

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
pressure.
If you add too much air, press the
center of the valve to deflate.

After completing the tire inflation
pressure measurement and adjust-
ment, 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 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 drivetrain

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

Tire inflation pressure

Checking the specified tire infla-
tion pressure

Inspection and adjustment pro-
cedure

336

6-3. Do-it-yourself maintenance

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

accurate cold tire inflation pressure read-

ing.

●

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 gener-

ated in the tire. Do not reduce tire infla-

tion 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 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 dam-

age

●

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 mois-

ture may get into the valve and cause an

air leak, resulting in decreased tire infla-

tion pressure.

337

6-3. Do-it-yourself maintenance

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When replacing wheels, care should
be taken to ensure that they are equiv-
alent to those removed in load capac-
ity, 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

■

When replacing wheels

The wheels of your vehicle are equipped

with tire pressure warning valves and trans-

mitters 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 pres-

sure warning valves and transmitters must

be installed. (



P.330)



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



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



Vehicles with 17-inch tires: Be care-
ful 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

Wheels

If a wheel is bent, cracked or heav-
ily 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 different

size from those recommended 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 acci-

dent, causing death or serious injury.

■

Use of defective wheels prohibited

Do not use cracked or deformed wheels.

Doing so could cause the tire to leak air

during driving, possibly causing an acci-

dent.

NOTICE

■

Replacing tire pressure warning

valves and transmitters

●

Because tire repair or replacement

may affect the tire pressure warning

valves and transmitters, make sure to

have tires serviced by your Lexus

dealer or other qualified service shop.

In addition, make sure to purchase

your tire pressure warning valves and

transmitters at your Lexus dealer.

●

Ensure that only genuine Lexus wheels

are used on your vehicle.

Tire pressure warning valves and

transmitters may not work properly

with non-genuine wheels.

Aluminum wheel precautions

339

6-3. Do-it-yourself maintenance

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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 and

the filter case should be pointing up.

■

Checking interval

Inspect and replace the air conditioning fil-

ter according to the maintenance schedule.

In dusty areas or areas with heavy traffic

flow, early replacement may be required.

(For scheduled maintenance information,

please refer to the “Owner’s Manual Sup-

plement” or “Scheduled Maintenance”.)

■

If air flow from the vents decreases dra-

matically

The filter may be clogged. Check the filter

and replace if necessary.

■

Air conditioning filter with deodorizing

function

When fragrances are placed in your vehi-

cle, the deodorizing effect may become sig-

nificantly weakened in a short period.

When an air conditioning odor comes out

continuously, replace the air conditioning

filter.

NOTICE

■

When using the air conditioning sys-

tem

●

Make sure that a filter is always

installed.

Using the air conditioning system with-

out a filter may cause damage to the

system.

●

The filter is replaceable.

When cleaning the filter, do not clean

with water or an air gun.

■

To prevent damage to the filter 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.

340

6-3. Do-it-yourself maintenance

Remove the dust from the air intake
vent with a vacuum cleaner, etc.

Make sure to only use a vacuum to suck
out dust and clogs. Attempting to blow out
dust and clogs using an airgun, etc. may
push it into the air intake vent. (



P.342)

If dust and clogs cannot be completely
removed with the air intake vent cover
installed, remove the cover and clean

the filter.

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 7 claws,
starting from the claw in the upper
right corner.

Pull the cover toward the front of
the vehicle to remove it.

Cleaning the hybrid battery
(traction battery) air intake
vent and filter

To prevent the fuel economy from
being affected, visually inspect the
hybrid battery (traction battery) air
intake vent periodically for dust and
clogs. If it is dusty or clogged or if
“Maintenance required for Trac-
tion battery cooling parts See
owner’s manual” is displayed on the
multi-information display, clean the
air intake vent using the following
procedures:

Cleaning the air intake vent

If dust and clogs cannot be com-
pletely removed

341

6-3. Do-it-yourself maintenance

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Remove the air intake vent filter.

Disengage the 3 claws as shown in
the illustration.

Remove the filter from the cover.

Remove the dust and clogs from
the filter using a vacuum cleaner,
etc.

Make sure to also remove the dust and

clogs from the inside of the air intake vent

cover.

Reinstall the filter to the cover.

Engage the filter to the 2 claws as
shown in the illustration.

Engage the 3 claws to install the fil-
ter.

Make sure that the filter is not crooked or

deformed when installing it.

Install the air intake vent cover.

Insert the tab of the cover as shown
in the illustration.

Push the cover to engage the 7
claws.

342

6-3. Do-it-yourself maintenance

Using a Phillips screwdriver, install
the clip.

■

Scheduled maintenance of the air

intake vent is necessary when

In some situations such as when the vehicle

is used frequently or in heavy traffic or dusty

areas, the air intake vent may need to be

cleaned more regularly.

For details, refer to “Owner’s Manual Sup-

plement” or “Scheduled Maintenance”.

■

Cleaning the air intake vent

●

Dust in the air intake vent may interfere

with the cooling of the hybrid battery

(traction battery). If charging/discharg-

ing of the hybrid battery (traction battery)

becomes limited, the distance that the

vehicle can be driven using the electric

motor (traction motor) may be reduced

and the fuel economy may be reduced.

Inspect and clean the air intake vent peri-

odically.

●

Improper handling of the air intake vent

cover and filter may result in damage to

them. If you have any concerns about

cleaning the filter, contact your Lexus

dealer.

■

If “Maintenance required for Traction

battery cooling parts See owner’s man-

ual” is displayed on the multi-informa-

tion display

●

If this warning message is displayed on

the multi-information display, remove the

air intake vent cover and clean the filter.

(



P.340)

●

After cleaning the air intake vent, start

the hybrid system and check that the

warning message is no longer displayed.

After the hybrid system is started, it may

be necessary to drive the vehicle up to

approximately 20 minutes before the

warning message disappears. If the warn-

ing message does not disappear after

driving for appropriately 20 minutes,

have the vehicle inspected by your Lexus

dealer.

WARNING

■

When cleaning the air intake vent

●

Do not use water or other liquids to

clean the air intake vent. 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 vent,

make sure to turn the power switch off

to stop the hybrid system.

■

When removing the air intake vent

cover

Do not touch the service plug located

near the air intake vent. (



P.63)

NOTICE

■

When cleaning the air intake vent

When cleaning the air intake vent, make

sure to only use a vacuum to suck out

dust and clogs. If a compressed air blow

gun, etc. is used to blow out dust and

clogs, the dust or clogs may be pushed

into the air intake vent, which may affect

the performance of the hybrid battery

(traction battery) and cause a malfunc-

tion.

343

6-3. Do-it-yourself maintenance

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■

If the electronic key battery is depleted

The following symptoms may occur:

●

The smart access system with push-but-

ton start and wireless remote control will

not function properly.

●

The operational range will be reduced.

■

When the card key battery needs to be

replaced (if equipped)

The battery for the card key is available only

at Lexus dealers. Your Lexus dealer can

replace the battery for you.

Prepare the following before replacing
the battery:



Flathead screwdriver



Small flathead screwdriver



Lithium battery CR2032

■

Use a CR2032 lithium battery

●

Batteries can be purchased at your Lexus

dealer, local electrical appliance shops or

camera stores.

●

Replace only with the same or equivalent

type recommended by the manufacturer.

●

Dispose of used batteries according to

the local laws.

NOTICE

■

To prevent damage to the vehicle

●

Do not allow water or foreign matter

to enter the air intake vent when the

cover is removed.

●

Carefully handle the removed filter so

that it will not be damage.

If the filter is damaged, have it

replaced with a new filter by your

Lexus dealer.

●

Make sure to reinstall the filter and

cover to their original positions after

cleaning.

●

Do not install anything to the air intake

vent other than the exclusive filter for

this vehicle or use the vehicle without

the filter installed.

■

If “Maintenance required for Trac-

tion battery cooling parts See

owner’s manual” is displayed on the

multi-information display

If the vehicle is continuously driven with

the warning message (indicating that

charging/discharging of the hybrid bat-

tery (traction battery) may become lim-

ited) displayed, the hybrid battery

(traction battery) may malfunction.

Electronic key battery

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

Items to prepare

344

6-3. Do-it-yourself maintenance

Take out the mechanical key.

Remove the cover.

To prevent damage to the key, wrap the tip

of the screwdriver with tape.

Remove the depleted battery.

Insert a new battery with the “+” terminal

facing up.

Replacing the battery

WARNING

■

Battery precautions

Observe the following precautions. Fail-

ure to do so may result in death or seri-

ous 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 batter-

ies 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

Lexus dealer.

●

If you accidentally swallow a battery or

put a battery into a part of your body,

get emergency medical attention

immediately.

■

To prevent battery explosion or leak-

age of flammable liquid 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 battery.

NOTICE

■

When replacing the battery

Use a screwdriver of appropriate size.

Applying excessive force may deform or

damage the cover.

345

6-3. Do-it-yourself maintenance

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Turn the power switch off.

Open the Fuse box cover.



Engine compartment: type A fuse
box

Push the tab in and lift the lid off.



Engine compartment: type B fuse
box

Push the tab in and lift the lid off.



Driver’s side instrument panel

Push the tab in and remove the lid.

NOTICE

■

For normal operation after replacing

the battery

Observe the following precautions to

prevent accidents:

●

Always work with dry hands.

Moisture may cause the battery to

rust.

●

Do not touch or move any other com-

ponent inside the remote control.

●

Do not bend either of the battery ter-

minals.

Checking and replacing
fuses

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

Checking and replacing fuses

346

6-3. Do-it-yourself maintenance

Make sure to push the tab in during
removal or installation.

Remove the fuse with the pullout
tool.

Only type A fuses can be removed using

the pullout tool.

Check if the fuse is blown.

Type A and B:

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 C:

Contact your Lexus dealer.



Type A

Normal fuse

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.349)

●

If the replaced fuse blows again, have the

vehicle inspected by your Lexus dealer.

■

If there is an overload in a circuit

The fuses are designed to blow, protecting

the wiring harness from damage.

A
B

347

6-3. Do-it-yourself maintenance

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

Vehicles with single-beam head-
lights

Adjustment bolt A (vertical)

Adjustment bolt B (horizontal)



Vehicles with triple-beam head-
lights

Adjustment bolt A (vertical)

Adjustment bolt B (horizontal)



Make sure the vehicle has a full tank
of gasoline and the area around the
headlight is not deformed.

WARNING

■

To prevent system breakdowns and

vehicle fire

Observe the following precautions.

Failure to do so may cause damage to

the vehicle, and possibly a fire or injury.

●

Never use a fuse of a higher amperage

rating than that indicated, or use any

other object in place of a fuse.

●

Always use a genuine Lexus fuse or

equivalent.

Never replace a fuse with a wire, even

as a temporary fix.

●

Do not modify the fuses or fuse boxes.

NOTICE

■

Before replacing fuses

Have the cause of electrical overload

determined and repaired by your Lexus

dealer as soon as possible.

Headlight aim

Vertical/horizontal movement
adjusting bolts

Before checking the headlight
aim

348

6-3. Do-it-yourself maintenance



Park the vehicle on level ground.



Make sure the tire inflation pressure
is at the specified level.



Have someone sit in the driver’s
seat.



Bounce the vehicle several times.



Vehicles with single-beam head-
lights

Using a Phillips-head screwdriver,
turn bolt A in either direction.

Remember the turning direction and the

number of turns.

Turn bolt B the same number of
turns and in the same direction as
step

If the headlight cannot be adjusted using

this procedure, take the vehicle to your

Lexus dealer to adjust the headlight aim.



Vehicles with triple-beam head-
lights

Using a Phillips-head screwdriver,
turn bolt A in either direction.

Remember the turning direction and the

number of turns.

Turn bolt B the same number of
turns and in the same direction as
step

If the headlight cannot be adjusted using

this procedure, take the vehicle to your

Lexus dealer to adjust the headlight aim.

Adjusting the headlight aim

349

6-3. Do-it-yourself maintenance

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Front turn signal lights (vehicles
with single-beam headlights)

Front side marker lights (vehicles
with single-beam headlights)

■

Bulbs that need to be replaced by
your Lexus dealer



Headlights



Parking lights and daytime running
lights



Front turn signal lights (vehicles with
triple-beam headlights)



Front side marker lights (vehicles
with triple-beam headlights)



Cornering lights



Side turn signal lights



Outer foot lights



Tail lights



Stop lights



Rear turn signal lights



Rear side marker lights



Back-up lights



High mounted stoplight



License plate lights

■

LED lights

The lights other than the front turn signal

lights (vehicles with single-beam head-

lights) and front side marker lights (vehicles

with single-beam headlights) each consist

of a number of LEDs. If any of the LEDs

burn out, take your vehicle to your Lexus

dealer to have the light replaced.

■

Condensation build-up on the inside of

the lens

Temporary condensation build-up on the

inside of the headlight lens does not indi-

cate a malfunction. Contact your Lexus

dealer for more information in the following

situations:

●

Large drops of water have built up on the

inside of the lens.

●

Water has built up inside the headlight.

■

Front turn signal lights/front side
marker lights

To ensure enough space to per-
form work, turn the steering wheel
to rotate the front wheel away from
the bulb to be replaced. Remove
the fender liner clip.

Light bulbs

You may replace the following bulb
by yourself. Before replacing,
check the wattage of the light bulb
to be replaced. As there is a danger
that components may be damaged,
we recommend that replacement is
carried out by your Lexus dealer.

Bulb location

Replacing light bulb (vehicles
with single-beam headlights)

350

6-3. Do-it-yourself maintenance

Turn the steering wheel to the left when

replacing the right side light bulb, and turn

the steering wheel to the right when

replacing the left side light bulb.

To protect the front bumper from
being damaged, apply protective
tape around the clips as shown in
the illustration.

Use masking tape, etc. Do not use duct

tape, as it may leave residue or damage the

paint when removed.

Insert a flathead screwdriver
between the front bumper and the
fender liner and then detach the
claw.

If the front bumper is pulled outward as

shown in the illustration, the claw is easily

detached.

Pull back the fender liner and turn
the bulb base counterclockwise.

Front turn signal lights

Front side marker lights

A
B

351

6-3. Do-it-yourself maintenance

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Remove the light bulb.

Front turn signal lights

Front side marker lights

Install a new light bulb then install
the bulb base to the light unit by
inserting it and turning the bulb
base clockwise.

Front turn signal lights

Front side marker lights

Return the fender liner to its origi-
nal position, and install the clip.

Make sure that the fender liner is correctly

positioned on the inner side of the front

bumper.

Engage the clips to the front
bumper to install the fender liner,
and then remove the protective
tape.

WARNING

■

Replacing light bulb

●

Turn off the light. Do not attempt to

replace the bulb immediately after

turning off the light.

The bulb become very hot and may

cause burns.

352

6-3. Do-it-yourself maintenance

WARNING

●

Do not touch the glass portion of the

light bulb with bare hands. When it is

unavoidable to hold the glass portion,

use and hold with a clean dry cloth to

avoid getting moisture and oils on the

bulb.

Also, if the bulb is scratched or

dropped, it may blow out or crack.

●

Fully install light bulb and any parts

used to secure it. Failure to do so may

result in heat damage, fire, or water

entering the light unit. This may dam-

age the light or cause condensation to

build up on the lens.

■

To prevent damage or fire

●

Make sure bulb is fully seated and

locked.

●

Check the wattage of the bulb before

installing to prevent heat damage.

Lexus ES300H (2024 year). Manual in english - page 11