Lexus ES300h (2023 year). Manual in english

346

6-3. Do-it-yourself maintenance

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.348)

●

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.

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.

347

6-3. Do-it-yourself maintenance

Mai
nte

e a

are



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.



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.

Headlight aim

Vertical/horizontal movement
adjusting bolts

Before checking the headlight
aim

A
B

Adjusting the headlight aim

348

6-3. Do-it-yourself maintenance



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.

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)

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

349

6-3. Do-it-yourself maintenance

Mai
nte

e a

are



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.

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

Replacing light bulb (vehicles
with single-beam headlights)

350

6-3. Do-it-yourself maintenance

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

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

A
B

351

6-3. Do-it-yourself maintenance

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d c

are

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.

●

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

ari

ses

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

n t

ise

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 can not 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 anticipated that the
vehicle will be flooded or set a drift.
Remain calm and follow the follow-
ing.

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 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 a drift, which

may lead to death.

357

7-2. Steps to take in an emergency

n t

ise

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

ari

ses

■

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.

Lexus ES300h (2023 year). Manual in english - page 21