Lexus ES300H (2023 year). Manual in english

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.

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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

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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

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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.

353

When trouble

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When trouble arises

7-1. Essential information

Emergency flashers..................

354

If your vehicle has to be stopped

in an emergency.....................

354

If the vehicle is submerged or

water on the road is rising ..

355

7-2. Steps to take in an emergency

If your vehicle needs to be towed

........................................................

357

If you think something is wrong

........................................................

358

If a warning light turns on or a

warning buzzer sounds .......

360

If a warning message is displayed

........................................................

370

If you have a flat tire..................

375

If the hybrid system will not start

........................................................

382

If you lose your keys.................

384

If the fuel filler door cannot be

opened........................................

384

If the electronic key does not

operate properly ....................

385

If the 12-volt battery is discharged

........................................................

387

If your vehicle overheats .........

391

If the vehicle becomes stuck

394

354

7-1. Essential information

7-1.Essential information

Press the switch to flash all of the turn
signal lights.

To turn them off, press the switch once
again.

■

Emergency flashers

●

If the emergency flashers are used for a

long time while the hybrid system is not

operating (while the “READY” indicator

is not illuminated), the 12-volt battery may

discharge.

●

If any of the SRS airbags deploy (inflate)

or in the event of a strong rear impact, the

emergency flashers will turn on automati-

cally.

The emergency flashers will turn off auto-

matically after operating for approxi-

mately 20 minutes. To manually turn the

emergency flashers off, press the switch

twice.

(The emergency flashers may not turn on

automatically depending on the force of

the impact and conditions of the colli-

sion.)

Steadily step on the brake pedal
with both feet and firmly depress it.

Do not pump the brake pedal repeatedly

as this will increase the effort required to

slow the vehicle.

Shift the shift lever to N.



If the shift lever is shifted to N

After slowing down, stop the vehi-
cle in a safe place by the road.

Stop the hybrid system.



If the shift lever cannot be shifted to
N

Keep depressing the brake pedal
with both feet to reduce vehicle
speed as much as possible.

To stop the hybrid system, press
and hold the power switch for 2
consecutive seconds or more, or

Emergency flashers

The emergency flashers are used to
warn other drivers when the vehi-
cle has to be stopped in the road
due to a breakdown, etc.

Operating instructions

If your vehicle has to be
stopped in an emergency

Only in an emergency, such as if it
becomes impossible to stop the
vehicle in the normal way, stop the
vehicle using the following proce-
dure:

Stopping the vehicle

355

7-1. Essential information

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press it briefly 3 times or more in
succession.

Stop the vehicle in a safe place by
the road.



If the door can be opened, open the
door and exit the vehicle.



If the door cannot be opened, open
the window using the power win-
dow switch and ensure an escape
route.



If the window can be opened, exit
the vehicle through the window.



If the door and window cannot be
opened due to the rising water,
remain calm, wait until the water
level inside the vehicle rises to the
point that the water pressure inside
of the vehicle equals the water pres-
sure outside of the vehicle and then
open the door after waiting for the
rising water to enter the vehicle, and
exit the vehicle. When the outside
water level exceeds half the height
of the door, the door cannot be
opened from the inside due to water
pressure.

■

Water level exceeds the floor

When the water level exceeds the floor and

WARNING

■

If the hybrid system has to be turned

off while driving

Power assist for the steering wheel will

be lost, making the steering wheel

heavier to turn. Decelerate as much as

possible before turning off the hybrid

system.

If the vehicle is submerged
or water on the road is rising

This vehicle is not designed to be
able to drive on roads that are
deeply flooded with water. Do not
drive on roads where the roads may
be submerged or the water may be
rising. It is dangerous to remain in
the vehicle, if it is anticipated that
the vehicle will be flooded or set
adrift. Remain calm and follow the
following.

356

7-1. Essential information

time has passed, the electrical equipment

will get damaged, the power windows will

not operate, the engine and motor will stop,

and the vehicle may not be able to get mov-

ing.

■

Using an emergency escape hammer

Laminated glass

is used in the windshield

and the side windows on this vehicle.
Laminated glass cannot be shattered with
an emergency hammer

: Contact your Lexus dealer or aftermar-

ket accessory manufacturer for further
information about an emergency ham-
mer.

: If equipped

■

How to distinguish laminated glass

When looking from the cross-sectional

view point, laminated glass is two sheets of

glass pasted together.

Laminated glass

Tempered glass

WARNING

■

Caution while driving

Do not drive on roads where the roads

may be submerged or the water may be

rising. Otherwise the vehicle may be

damaged and cannot move, as well as

become flooded and set adrift, which

may lead to death.

357

7-2. Steps to take in an emergency

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7-2.Steps to take in an emergency

The following may indicate a problem
with your transmission. Contact your
Lexus dealer or commercial towing
service before towing.



The hybrid system warning message
is shown on the multi-information
display and the vehicle does not
move.



The vehicle makes an abnormal
sound.



From the front

Release the parking brake.

Turn automatic mode off. (



P.160)



From the rear

Use a towing dolly under the front
wheels.

If your vehicle needs to be
towed

If towing is necessary, we recom-
mend having your vehicle towed by
your Lexus dealer or commercial
towing service, using a wheel-lift
type truck or flatbed truck.
Use a safety chain system for all
towing, and abide by all state/pro-
vincial and local laws.

Situations when it is necessary to
contact dealers before towing

Towing with a wheel-lift type
truck

WARNING

Observe the following precautions.

Failure to do so may result in death or

serious injury.

■

When towing the vehicle

Be sure to transport the vehicle with the

front wheels raised or with all four wheels

raised off the ground. If the vehicle is

towed with the front wheels contacting

the ground, the drivetrain and related

parts may be damaged or electricity

generated by the operation of the motor

may cause a fire to occur depending on

the nature of the damage or malfunction.

358

7-2. Steps to take in an emergency

When using a flat-bed truck to trans-
port the vehicle, use tire strapping
belts. Refer to the owner’s manual of
the flat-bed truck for the tire strapping
method.
In order to suppress vehicle movement
during transportation, set the parking
brake and turn the power switch off.



Fluid leaks under the vehicle.
(Water dripping from the air condi-
tioning after use is normal.)



Flat-looking tires or uneven tire
wear



Engine coolant temperature gauge
continually points higher than nor-
mal.



Changes in exhaust sound



Excessive tire squeal when corner-
ing



Strange noises related to the sus-
pension system



Pinging or other noises related to
the hybrid system



Engine missing, stumbling or run-
ning roughly



Appreciable loss of power



Vehicle pulls heavily to one side
when braking

NOTICE

■

To prevent damage to the vehicle

when towing using a wheel-lift type

truck

When raising the vehicle, ensure ade-

quate ground clearance for towing at the

opposite end of the raised vehicle. With-

out adequate clearance, the vehicle

could be damaged while being towed.

■

Towing with a sling-type truck

Do not tow with a sling-type truck to pre-

vent body damage.

Using a flatbed truck

NOTICE

■

To prevent damage to the vehicle

when towing with a sling-type truck

Do not tow with a sling-type truck, either

from the front or rear.

If you think something is
wrong

If you notice any of the following
symptoms, your vehicle probably
needs adjustment or repair. Con-
tact your Lexus dealer as soon as
possible.

Visible symptoms

Audible symptoms

Operational symptoms

360

7-2. Steps to take in an emergency

■

Brake system warning light (warning buzzer)

■

Brake system warning light (warning buzzer)

■

High coolant temperature warning light

(warning buzzer)

: This light illuminates on the multi-information display.

If a warning light turns on or a warning buzzer sounds

Calmly perform the following actions if any of the warning lights comes on or
flashes. If a light comes on or flashes, but then goes off, this does not necessar-
ily indicate a malfunction in the system. However, if this continues to occur,
have the vehicle inspected by your Lexus dealer.

Actions to the warning lights or warning buzzers

Warning light

Details/Actions

(U.S.A.)

(red)

(Canada)

Indicates that:



The brake fluid level is low; or



The brake system is malfunctioning



Immediately stop the vehicle in a safe place and contact your
Lexus dealer. Continuing to drive the vehicle may be dangerous.

Warning light

Details/Actions

(yellow)

Indicates a malfunction in:



The regenerative braking system;



The electronically controlled brake system; or



The parking brake system



Have the vehicle inspected by your Lexus dealer immediately.

Warning light

Details/Actions

Indicates that the engine coolant temperature is too high



Immediately stop the vehicle in a safe place.
Handling method (



P.391)

361

7-2. Steps to take in an emergency

When trouble

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■

Charging system warning light

(warning buzzer)

: This light illuminates on the multi-information display.

■

Low engine oil pressure warning light

(warning buzzer)

: This light illuminates on the multi-information display.

■

Malfunction indicator lamp (warning buzzer)

■

SRS warning light (warning buzzer)

Warning light

Details/Actions

Indicates a malfunction in the vehicle’s charging system



Immediately stop the vehicle in a safe place and contact your
Lexus dealer.

Warning light

Details/Actions

Indicates that the engine oil pressure is too low



Immediately stop the vehicle in a safe place and contact your
Lexus dealer.

Warning light

Details/Actions

(U.S.A.)

(Canada)

Indicates a malfunction in:



The hybrid system;



The electronic engine control system; or



The electronic throttle control system



Immediately stop the vehicle in a safe place and contact your
Lexus dealer.

Warning light

Details/Actions

Indicates a malfunction in:



The SRS airbag system;



The front passenger occupant classification system; or



The seat belt pretensioner system



Have the vehicle inspected by your Lexus dealer immediately.

362

7-2. Steps to take in an emergency

■

ABS warning light (warning buzzer)

■

Inappropriate pedal operation warning light

(warning buzzer)

: This light illuminates on the multi-information display.

■

Electric power steering system warning light (warning buzzer)

Warning light

Details/Actions

(U.S.A.)

(Canada)

Indicates a malfunction in:



The ABS; or



The brake assist system



Have the vehicle inspected by your Lexus dealer immediately.

Warning light

Details/Actions

When a buzzer sounds:



Brake Override System is malfunctioning



Drive-Start Control is malfunctioning



Drive-Start Control is operating



PKSB (Parking Support Brake) (if equipped) is operating



Follow the instructions displayed on the multi-information display.

When a buzzer does not sound:
Brake Override System is operating.



Release the accelerator pedal and depress the brake pedal.

Warning light

Details/Actions

(red)

(yellow)

Indicates a malfunction in the EPS (Electric Power Steering) system



Have the vehicle inspected by your Lexus dealer immediately.

363

7-2. Steps to take in an emergency

When trouble

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■

Low fuel level warning light

■

Driver’s and front passenger’s seat belt reminder light (warning buzzer)

: Driver’s seat belt warning buzzer:

The driver’s seat belt warning buzzer sounds to alert the driver that his or her seat belt is
not fastened. Once the power switch is turned to ON mode, the buzzer sounds. If the seat
belt is still unfastened, the buzzer sounds intermittently for a certain period of time after the
vehicle reaches a certain speed.
Front passenger’s seat belt warning buzzer:
The front passenger’s seat belt warning buzzer sounds to alert the front passenger that his
or her seat belt is not fastened. If the seat belt is unfastened, the buzzer sounds intermit-
tently for a certain period of time after the vehicle reaches a certain speed.

■

Rear passengers’ seat belt reminder lights

(warning buzzer)

: This light illuminates on the multi-information display. Regardless of whether or not a

rear passenger is present, if the power switch is turned to ON mode with the rear seat
belts unfastened, this light will also illuminate for a certain period of time.

: Rear passengers’ seat belt warning buzzer:

The rear passengers’ seat belt warning buzzer sounds to alert the rear passenger that his
or her seat belt is not fastened. If the seat belt is unfastened, the buzzer sounds intermit-
tently for a certain period of time, after the seat belt is fastened and unfastened and the
vehicle reaches a certain speed.

Warning light

Details/Actions

Indicates that remaining fuel is approximately 1.8 gal. (7 L, 1.5 Imp.gal.)
or less



Refuel the vehicle.

Warning light

Details/Actions

Warns the driver and/or front passenger to fasten their seat belts



Fasten the seat belt.
If the front passenger’s seat is occupied, the front passenger’s seat
belt also needs to be fastened to make the warning light (warning
buzzer) turn off.

Warning light

Details/Actions

Warns the rear passengers to fasten their seat belts



Fasten the seat belt.

364

7-2. Steps to take in an emergency

■

Tire pressure warning light

■

LTA indicator

(warning buzzer)

: This light illuminates on the multi-information display.

■

Intuitive parking assist OFF indicator (warning buzzer)

Warning light

Details/Actions

When the light comes on after blinking for approximately 1 minute:
Malfunction in the tire pressure warning system



Have the system checked by your Lexus dealer.

When the light comes on:
Low tire inflation pressure such as



Natural causes



Flat tire



Immediately stop the vehicle in a safe place.
Handling method (



P.367)

Warning light

Details/Actions

(orange)

Indicates a malfunction in the LTA (Lane Tracing Assist)



Follow the instructions displayed on the multi-information display.
(



P.199)

Warning light

Details/Actions

(flashes)

(if equipped)

When a buzzer sounds:
Indicates a malfunction in the intuitive parking assist function



Have the vehicle inspected by your Lexus dealer immediately.

When a buzzer does not sound:
Indicates that the system is temporarily unavailable, possibly due to a
sensor being dirty or covered with ice, etc.



Follow the instructions displayed on the multi-information display.
(



P.224)

365

7-2. Steps to take in an emergency

When trouble

ari

ses

■

RCTA OFF indicator (warning buzzer)

■

RCD OFF indicator (warning buzzer)

■

PKSB OFF indicator (warning buzzer)

Warning light

Details/Actions

(flashes)

When a buzzer sounds:
Indicates a malfunction in the RCTA (Rear Cross Traffic Alert) function



Have the vehicle inspected by your Lexus dealer immediately.

When a buzzer does not sound:
Indicates that the rear bumper around the radar sensor is covered with
dirt, etc. (



P.214)



Follow the instructions displayed on the multi-information display.
(



P.230)

Warning light

Details/Actions

(flashes or illumi-

nates)

(if equipped)

Indicates a RCD (Rear Camera Detection) function is malfunctioning or
disabled.



Follow the instructions displayed on the multi-information display.
(



P.236, 370)

Warning light

Details/Actions

(flashes)

(if equipped)

When a buzzer sounds:
Indicates a malfunction in the PKSB (Parking Support Brake) system



Have the vehicle inspected by your Lexus dealer immediately.

When a buzzer does not sound:
Indicates that the system is temporarily unavailable, possibly due to a
sensor being dirty or covered with ice, etc.



Follow the instructions displayed on the multi-information display.
(



P.243, 370)

366

7-2. Steps to take in an emergency

■

PCS warning light (warning buzzer)

■

Slip indicator

■

Parking brake indicator

Warning light

Details/Actions

(flashes or illumi-

nates)

When a buzzer sounds simultaneously:
Indicates a malfunction has occurred in the PCS (Pre-Collision System)



Have the vehicle inspected by your Lexus dealer immediately.

When a buzzer does not sound:
The PCS (Pre-Collision System) has become temporarily unavailable,
corrective action may be necessary.



Follow the instructions displayed on the multi-information display.
(



P.180, 370)

If the PCS (Pre-Collision System) or VSC (Vehicle Stability Control)
system is disabled, the PCS warning light will illuminate.



P.191

Warning light

Details/Actions

Indicates a malfunction in:



The VSC system;



The TRAC system; or



The hill-start assist control system



Have the vehicle inspected by your Lexus dealer immediately.

Warning light

Details/Actions

(flashes)

(U.S.A.)

(flashes)

(Canada)

Indicates a malfunction in the parking brake system



Have the vehicle inspected by your Lexus dealer immediately.

367

7-2. Steps to take in an emergency

When trouble

ari

ses

■

Brake hold operated indicator (warning buzzer)

■

Hybrid system overheat warning light

(warning buzzer)

: This light illuminates on the multi-information display.

■

Master warning light (warning buzzer)

■

Warning buzzer

In some cases, the buzzer may not be heard

due to being in a noisy location or audio

sound.

■

Front passenger detection sensor, seat

belt reminder and warning buzzer

●

If luggage is placed on the front passen-

ger seat, the front passenger detection

sensor may cause the warning light to

flash and the warning buzzer to sound

even if a passenger is not sitting in the

seat.

●

If a cushion is placed on the seat, the sen-

sor may not detect a passenger, and the

warning light may not operate properly.

■

SRS warning light

This warning light system monitors the air-

bag sensor assembly, front impact sensors,

side impact sensors (front door), side

impact sensors (front), side impact sensors

(rear), driver’s seat position sensor, driver’s

seat belt buckle switch, front passenger

occupant classification system (ECU and

sensors), “PASSENGER AIR BAG” indica-

tor lights, front passenger’s seat belt buckle

switch, seat belt pretensioners, airbags,

interconnecting wiring and power sources.

(



P.28)

■

Electric power steering system warning

light (warning buzzer)

When the 12-volt battery charge becomes

insufficient or the voltage temporarily

drops, the electric power steering system

warning light may come on and the warning

buzzer may sound.

■

When the tire pressure warning light

comes on

Inspect the tires to check if a tire is punc-

tured.
If a tire is punctured:



P.375

If none of the tires are punctured:

Turn the power switch off then turn it to ON

mode. Check if the tire pressure warning

light comes on or blinks.

Warning light

Details/Actions

(flashes)

Indicates a malfunction in the brake hold system



Have the vehicle inspected by your Lexus dealer immediately.

Warning light

Details/Actions

Indicates that the hybrid system has overheated



Stop the vehicle in a safe place. Handling method (



P.392)

Warning light

Details/Actions

A buzzer sounds and the warning light comes on and flashes to indicate
that the master warning system has detected a malfunction.



P.370

368

7-2. Steps to take in an emergency



If the tire pressure warning light blinks for

approximately 1 minute then stays on

There may be a malfunction in the tire pres-

sure warning system. Have the vehicle

inspected by your Lexus dealer immedi-

ately.



If the tire pressure warning light comes

After the temperature of the tires has

lowered sufficiently, check the inflation

pressure of each tire and adjust them to

the specified level.

If the warning light does not turn off

even after several minutes have

elapsed, check that the inflation pres-

sure of each tire is at the specified level

and perform initialization. (



P.331)

■

The tire pressure warning light may

come on due to natural causes

The tire pressure warning light may come

on due to natural causes such as natural air

leaks and tire inflation pressure changes

caused by temperature. In this case, adjust-

ing the tire inflation pressure will turn off the

warning light (after a few minutes).

■

When a tire is replaced with a spare tire

The compact spare tire is not equipped with

a tire pressure warning valve and transmit-

ter. If a tire goes flat, the tire pressure warn-

ing light will not turn off even though the flat

tire has been replaced with the spare tire.

Replace the spare tire with the repaired tire

and adjust the tire inflation pressure. The

tire pressure warning light will go off after a

few minutes.

■

Conditions that the tire pressure warn-

ing system may not function properly



P.330

WARNING

■

If both the ABS and the brake system

warning lights remain on

Stop your vehicle in a safe place immedi-

ately and contact your Lexus dealer.

The vehicle will become extremely

unstable during braking, and the ABS

system may fail, which could cause an

accident resulting in death or serious

injury.

■

When the electric power steering

system warning light comes on

When the light comes on yellow, the

assist to the power steering is restricted.

When the light comes on red, the assist

to the power steering is lost and handling

operations of the steering wheel become

extremely heavy.

When steering wheel operations are

heavier than usual, grip the steering

wheel firmly and operate it using more

force than usual.

■

If the tire pressure warning light

comes on

Be sure to observe the following precau-

tions.

Failure to do so could cause a loss of

vehicle control and result in death or

serious injury.

●

Stop your vehicle in a safe place as

soon as possible. Check and adjust the

tire inflation pressure immediately.

●

If the tire pressure warning light comes

on even after tire inflation pressure

adjustment, it is probable that you have

a flat tire. Check the tires. If a tire is flat,

change it with the spare tire and have

the flat tire repaired by the nearest

Lexus dealer.

●

Avoid abrupt maneuvering and brak-

ing.

If the vehicle tires deteriorate, you

could lose control of the steering

wheel or the brakes.

369

7-2. Steps to take in an emergency

n t

ris

WARNING

■

If a blowout or sudden air leakage

should occur

The tire pressure warning system may

not activate immediately.

■

Maintenance of the tires

Each tire, including the spare (if pro-

vided), should be checked monthly when

cold and inflated to the inflation pressure

recommended by the vehicle manufac-

turer on the vehicle placard or tire infla-

tion pressure label (tire and load

information label). (If your vehicle has

tires of a different size than the size indi-

cated on the vehicle placard or tire infla-

tion pressure label [tire and load

information label], you should determine

the proper tire inflation pressure for

those tires.)

As an added safety feature, your vehicle

has been equipped with a tire pressure

monitoring system (TPMS-tire pressure

warning system) that illuminates a low

tire pressure telltale (tire pressure warn-

ing light) when one or more of your tires

is significantly under-inflated. Accord-

ingly, when the low tire pressure telltale

(tire pressure warning light) illuminates,

you should stop and check your tires as

soon as possible, and inflate them to the

proper pressure. Driving on a signifi-

cantly under-inflated tire causes the tire

to overheat and can lead to tire failure.

Under-inflation also reduces fuel effi-

ciency and tire tread life, and may affect

the vehicle’s handling and stopping abil-

ity.

Please note that the TPMS (tire pressure

warning system) is not a substitute for

proper tire maintenance, and it is the

driver’s responsibility to maintain correct

tire pressure, even if under-inflation has

not reached the level to trigger illumina-

tion of the TPMS low tire pressure telltale

(tire pressure warning light).

Your vehicle has also been equipped

with a TPMS (tire pressure warning sys-

tem) malfunction indicator to indicate

when the system is not operating prop-

erly. The TPMS (tire pressure warning

system) malfunction indicator is com-

bined with the low tire pressure telltale

(tire pressure warning light). When the

system detects a malfunction, the telltale

will flash for approximately one minute

and then remain continuously illumi-

nated. This sequence will continue upon

subsequent vehicle start-ups as long as

the malfunction exists. When the mal-

function indicator is illuminated, the sys-

tem may not be able to detect or signal

low tire pressure as intended.

TPMS (tire pressure warning system)

malfunctions may occur for a variety of

reasons, including the installation of

replacement or alternate tires or wheels

on the vehicle that prevent the TPMS

(tire pressure warning system) from

functioning properly. Always check the

TPMS (tire pressure warning system)

malfunction telltale after replacing one

or more tires or wheels on your vehicle

to ensure that the replacement or alter-

nate tires and wheels allow the TPMS

(tire pressure warning system) to con-

tinue to function properly.

NOTICE

■

To ensure the tire pressure warning

system operates properly

Do not install tires with different specifi-

cations or makers, as the tire pressure

warning system may not operate prop-

erly.

370

7-2. Steps to take in an emergency

If a warning message is dis-
played

The multi-information display
shows warnings of system malfunc-
tions, incorrectly performed opera-
tions, and messages that indicate a
need for maintenance. When a
message is shown, perform the cor-
rection procedure appropriate to
the message.

Except F SPORT models:

Master warning light

The master warning light also comes on
or flashes in order to indicate that a mes-
sage is currently being displayed on the
multi-information display.

Multi-information display

Follow the instructions of the message
on the multi-information display.
If any of the warning messages are
shown again after the appropriate
actions have been performed, contact
your Lexus dealer.

F SPORT models (main meter in
center position):

Master warning light

The master warning light also comes on
or flashes in order to indicate that a mes-
sage is currently being displayed on the
multi-information display.

Multi-information display

Follow the instructions of the message
on the multi-information display.
If any of the warning messages are
shown again after the appropriate
actions have been performed, contact
your Lexus dealer.

371

7-2. Steps to take in an emergency

When trouble

ari

ses

The master warning light and warning buzzers operate as follows depending on
the content of the message. If a message indicates the need for inspection by a
dealer, have the vehicle inspected by your Lexus dealer immediately.

F SPORT models (main meter
moved to the right):

Master warning light

The master warning light also comes on
or flashes in order to indicate that a mes-
sage is currently being displayed on the
multi-information display.

Multi-information display

Follow the instructions of the message
on the multi-information display.
If any of the warning messages are
shown again after the appropriate
actions have been performed, contact
your Lexus dealer.

Messages and warnings

Warning buzzer

Warning

Comes on

Sounds

Indicates an important situation, such as when a sys-
tem related to driving is malfunctioning or that dan-
ger may result if the correction procedure is not
performed

Flashes

Sounds

Indicates a situation, such as when damage to the
vehicle or danger may result

372

7-2. Steps to take in an emergency

: A buzzer sounds the first time a message is shown on the multi-information display.



In some situations, the master warning light and warning buzzer may not oper-
ate as specified. In this case, follow the instructions displayed in the warning
message.



If a warning light comes on or flashes at the same time that a warning message is
displayed, take corrective action according to the warning light. (



P.360)

■

Warning messages

The warning messages explained below

may differ from the actual messages

according to operation conditions and vehi-

cle specifications.

■

Warning buzzer

In some cases, the buzzer may not be heard

due to being in a noisy location or audio

sound.

■

If “Engine Oil Level Low Add or

Replace” is displayed

The engine oil level is low. Check the level

of the engine oil, and add if necessary.

(



P.320)

This message may appear if the vehicle is

stopped on a slope. Move the vehicle to a

level surface and check to see if the mes-

sage disappears.

■

If “Hybrid System Stopped Steering

Power Low” is displayed

This message is displayed if the hybrid sys-

tem is stopped while driving.
When steering wheel operations are

heavier than usual, grip the steering wheel

firmly and operate it using more force than

usual.

■

If “Hybrid system overheated Output

power reduced” is displayed

This message may be displayed when driv-

ing under severe operating conditions. (For

example, when driving up a long steep hill.)

Handling method:



P.391

■

If “Traction Battery Needs to be Pro-

tected Refrain From the Use of N Posi-

tion” is displayed

This message may be displayed when the

shift lever is in N.
As the hybrid battery (traction battery) can

not be charged when the shift lever is in N,

shift the shift lever to P when the vehicle is

stopped.

■

If “Traction Battery Needs to be Pro-

tected Shift into P to Restart” is dis-

played

This message is displayed when the hybrid

battery (traction battery) charge has

become extremely low because the shift

lever has been left in N for a certain amount

of time.
When operating the vehicle, shift to P and

restart the hybrid system.

■

If “Shift to P Before Exiting Vehicle” is

displayed

Message is displayed when the driver’s

door is opened without turning the power

Comes on

Does not sound

Indicates a condition, such as malfunction of electri-
cal components, their condition, or indicates the
need for maintenance

Flashes

Does not sound

Indicates a situation, such as when an operation has
been performed incorrectly, or indicates how to
perform an operation correctly

Warning buzzer

Warning

Lexus ES300H (2023 year). Manual in english - page 11