Lexus IS300 (2023 year). Manual in english

309

6-3. Do-it-yourself maintenance

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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 and D:

Contact your Lexus dealer.



Type A

Normal fuse

Blown fuse



Type B

Normal fuse
Blown fuse



Type C

Normal fuse
Blown fuse



Type D

Normal fuse
Blown fuse

A
B

310

6-3. Do-it-yourself maintenance

■

After a fuse is replaced

●

If the lights do not turn on even after the

fuse has been replaced, a bulb may need

replacement.

●

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.

■

When replacing light bulbs

Lexus recommends that you use genuine

Lexus products designed for this vehicle.

Because certain bulbs are connected to cir-

cuits designed to prevent overload,

non-genuine parts or parts not designed for

this vehicle may be unusable.

Adjustment bolt A
Adjustment bolt B



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.

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

Remember the turning direction and the

number of turns.

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 movement adjusting
bolts

Before checking the headlight
aim

Adjusting the headlight aim

311

6-3. Do-it-yourself maintenance

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

Single-beam headlights



Triple-beam headlights

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.

Check the wattage of the light bulb to
be replaced. (



P.373)

Light bulbs

You may replace the following bulbs
by yourself. The difficulty level of
replacement varies depending on
the bulb. If necessary bulb replace-
ment seems difficult to perform,
contact your Lexus dealer.

For more information about replac-
ing other light bulbs, contact your
Lexus dealer.

Preparing for light bulb replace-
ment

312

6-3. Do-it-yourself maintenance

Front turn signal light (bulb type)
Rear turn signal light

■

Replacing the following bulbs

If any of the lights listed below has
burnt out, have it replaced by your
Lexus dealer.



Headlight



Parking lights and daytime running
lights



Front turn signal lights (LED type)



Side marker lights



Side turn signal lights



Stop/tail lights



Tail lights



Back-up light



High mounted stoplight



License plate lights

■

LED Lights

The lights other than the front turn signal

lights (bulb type) and rear turn signal lights

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.

■

When replacing light bulbs



P.310

Bulb locations

A
B

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6-3. Do-it-yourself maintenance

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■

Front turn signal lights (bulb type)

IS500: Removing the engine com-
partment cover.

Push the center of the clip.

Remove the clip.

For the left side only: Pinch the clip
to remove the washer fluid filler
opening.

Turn the bulb base counterclock-
wise.

Remove the light bulb.

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

After installing the light bulb, turn on the

front turn signal light to visually check that

there is no light leaking from the bulb base.

After replacing the left side bulb,
install the washer fluid filler opening
to its original position.

Replacing light bulbs

314

6-3. Do-it-yourself maintenance

IS500: Install the engine compart-
ment cover.

Push up center portion

Insert

Press

■

Rear turn signal lights

Open the trunk and apply protec-
tive tape to the vehicle body around
the light unit.

Use masking tape, etc. Do not use duct

tape, as it may leave residue or damage the

paint when removed.

Insert a flathead screw-driver
between the cover and the light unit

and pry up the cover in several
positions as shown in the illustration
to disengage the claws (indicated
by a dotted line).

To prevent scratching the vehicle, wrap the

tip of the flathead screwdriver with a cloth,

etc.

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

Remove the 2 bolts.

316

6-3. Do-it-yourself maintenance

Install the cover.

Remove the protective tape.

■

When replacing the front turn signal

lights (bulb type)

When the washer fluid filler opening is

removed with a large amount of washer

fluid contained in the washer tank, washer

fluid may spill onto the vehicle and cleaning

may be required.

WARNING

■

Replacing light bulbs

●

Turn off the lights. Do not attempt to

replace the bulb immediately after

turning off the lights.

The bulbs 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 bulbs and any parts

used to secure them. Failure to do so

may result in heat damage, fire, or

water entering the headlight unit. This

may damage the headlights or cause

condensation to build up on the lens.

■

To prevent damage or fire

●

Make sure bulbs are fully seated and

locked.

●

Check the wattage of the bulb before

installing to prevent heat damage.

317

When trouble

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When trouble arises

7-1. Essential information

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

318

If your vehicle has to be stopped in

an emergency...........................

318

If the vehicle is submerged or

water on the road is rising ...

319

7-2. Steps to take in an emergency

If your vehicle needs to be towed

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

321

If you think something is wrong

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

325

Fuel pump shut off system .....

326

If a warning light turns on or a

warning buzzer sounds .......

327

If a warning message is displayed

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

336

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

339

If the engine will not start .......

347

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

348

If the fuel filler door cannot be

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

349

If the electronic key does not

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

349

If the vehicle battery is discharged

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

351

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

355

If the vehicle becomes stuck

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

359

318

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 engine is not operat-

ing, the 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 engine.



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 engine, press and hold
the engine switch for 2 consecutive

Emergency flashers

The emergency flashers are used to
warn other drivers when the vehicle
has to be stopped on 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

319

7-1. Essential information

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seconds or more, or 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 window
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

time has passed, the electrical equipment

will get damaged, the power windows will

WARNING

■

If the engine has to be turned off while

driving

Power assist for the brakes and steering

wheel will be lost, making the brake

pedal harder to depress and the steering

wheel heavier to turn. Decelerate as

much as possible before turning off the

engine.

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.

320

7-1. Essential information

not operate, the engine stop, and the vehi-

cle may not be able to get moving.

■

Using an emergency escape hammer

Laminated glass is used in the windshield on

this vehicle.
Laminated glass cannot be shattered with
an emergency hammer

Tempered glass is used in the windows on

this vehicle.

: Contact your Lexus dealer or aftermar-

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

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.

321

7-2. Steps to take in an emergency

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7-2.Steps to take in an emergency

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.

If towing your vehicle with a
wheel-lift type truck from the front,
the vehicle’s rear wheels and axles
must be in good conditions.
(



P.322)

If they are damaged, use a towing
dolly or flatbed truck.

WARNING

Observe the following precautions.

Failure to do so may result in death or

serious injury.

■

When towing the vehicle



2WD models

Be sure to transport the vehicle with all

four wheels raised off the ground. If the

vehicle is towed with the tires contacting

the ground, the drivetrain and related

parts may be damaged or an accident

may occur due to a change in direction

of the vehicle.



AWD models

Be sure to transport the vehicle with all

four wheels raised off the ground. If the

vehicle is towed with the tires contacting

the ground, the drivetrain or related

parts may be damaged, the vehicle may

fly off the truck.

322

7-2. Steps to take in an emergency

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



The engine is running but the vehi-
cle does not move.



The vehicle makes an abnormal
sound.



From the front

Use a towing dolly under the rear
wheels.

WARNING

■

While towing

When towing using cables or chains,

avoid sudden starts, etc. which place

excessive stress on the towing eyelets,

cables or chains. The towing eyelets,

cables or chains may become damaged,

broken debris may hit people, and cause

serious damage.

■

Installing towing eyelet to the vehicle

Make sure that towing eyelet is installed

securely.

If not securely installed, towing eyelet

may come loose during towing.

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.

■

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.

■

To prevent damage to the vehicle

during emergency towing

Do not secure cables or chains to the

suspension components.

■

Recreational towing (behind motor

home, etc.)

Never dinghy tow your vehicle to pre-

vent causing serious damage to the

AWD system and transmission. (



P.129)

Situations when it is necessary to
contact dealers before towing

Towing with a wheel-lift type
truck

323

7-2. Steps to take in an emergency

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

From the rear

Use a towing dolly under the front
wheels.

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 engine switch off.

If a tow truck is not available in an
emergency, your vehicle may be tem-
porarily towed using cables or chains
secured to the emergency towing eye-
lets. This should only be attempted on
hard surfaced roads for at most 50
miles (80 km) at under 18 mph (30
km/h).
A driver must be in the vehicle to steer
and operate the brakes. The vehicle’s
wheels, drive train, axles, steering and
brakes must be in good condition.

To have your vehicle towed by another
vehicle, the towing eyelet must be
installed to your vehicle. Install the tow-
ing eyelet using the following proce-
dure.

Take out the wheel bolt wrench,
flathead screwdriver and towing
eyelet. (



P.339)

Remove the eyelet cover using a
flathead screwdriver.

To protect the bodywork, place a rag

between the screwdriver and the vehicle

body as shown in the illustration.

NOTICE

■

Towing with a sling-type truck

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

vent body damage.

Using a flatbed truck

NOTICE

■

Using a flatbed truck

Do not overly tighten the tie downs or the

vehicle may be damaged.

Emergency towing

Emergency towing procedure

324

7-2. Steps to take in an emergency

Insert the towing eyelet into the
hole and tighten partially by hand.

Tighten down the towing eyelet
securely using a wheel bolt wrench
or hard metal bar.

Securely attach cables or chains to
the towing eyelet.

Take care not to damage the vehicle body.

Enter the vehicle being towed and
start the engine.

If the engine does not start, turn the engine

switch to IGNITION ON mode.

Shift the shift lever to N and release
the parking brake.

Turn automatic mode off. (



P.139)

When the shift lever cannot be shifted:



P.134

■

While towing

If the engine is not running, the power assist

for the brakes and steering will not function,

making steering and braking more difficult.

■

Wheel bolt wrench

Wheel bolt wrench is installed in the trunk.

(



P.339)

325

7-2. Steps to take in an emergency

When trouble

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

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
needle continually points higher
than normal.



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 engine



Engine missing, stumbling or run-
ning roughly



Appreciable loss of power



Vehicle pulls heavily to one side
when braking



Vehicle pulls heavily to one side
when driving on a level road



Loss of brake effectiveness, spongy
feeling, pedal almost touches the
floor

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

327

7-2. Steps to take in an emergency

When trouble

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■

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 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.355)

328

7-2. Steps to take in an emergency

■

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 electronic engine control system;



The electronic throttle control system; or



The electronic automatic transmission 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.

329

7-2. Steps to take in an emergency

When trouble

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■

ABS warning light (warning buzzer)

■

Brake Override System warning light/Drive-Start Control warning light

(warning buzzer)

: This light illuminates on the multi-information display.

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:
Indicates a malfunction in:



Brake Override System



Drive-Start Control



Have the vehicle inspected by your Lexus dealer immediately.



Indicates that the shift position was changed and Drive-Start Control
was operated while depressing the accelerator pedal.



Momentarily release the accelerator pedal.



Parking Support Brake function (for static objects) is operating (if
equipped)



Follow the instructions displayed on the multi-information display.

When a buzzer does not sound:
Indicates that the accelerator and brake pedals are being depressed
simultaneously, and the Brake Override System is operating.



Release the accelerator pedal and depress the brake pedal.

330

7-2. Steps to take in an emergency

■

Electric power steering system warning light (warning buzzer)

■

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 engine switch is turned to IGNITION 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)

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.

Warning light

Details/Actions

Indicates that remaining fuel is approximately 2.6 gal. (10 L, 2.2 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.

331

7-2. Steps to take in an emergency

When trouble

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ses

: This light illuminates on the center panel.

: 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 intermittently
for a certain period of time, after the seat belt is fastened and unfastened and the vehicle
reaches a certain speed.

■

Tire pressure warning light

■

LTA indicator (warning buzzer)

■

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.334)

Warning light

Details/Actions

(orange)

Indicates a malfunction in the LTA (Lane Tracing Assist)



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



P.183)

Warning light

Details/Actions

(flashes)

(if equipped)

Indicates a malfunction in the intuitive parking assist function



Have the vehicle inspected by your Lexus dealer immediately.

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.205)

332

7-2. Steps to take in an emergency

■

RCTA OFF indicator (warning buzzer)

■

PKSB OFF indicator (warning buzzer)

■

PCS warning light

Warning light

Details/Actions

(flashes)

Indicates a malfunction in the RCTA (Rear Cross Traffic Alert) function



Have the vehicle inspected by your Lexus dealer immediately.

Indicates that the rear bumper around the radar sensor is covered with
dirt, etc. (



P.197)



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



P.211)

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.220, 336)

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.163, 337)

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



P.174

333

7-2. Steps to take in an emergency

When trouble

ari

ses

■

Slip indicator

■

Parking brake indicator (warning buzzer)

■

Brake hold operated indicator (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), “AIR BAG ON” indicator light,

“AIR BAG OFF” indicator light, front pas-

senger’s seat belt buckle switch, seat belt

pretensioners and force limiters, airbags,

interconnecting wiring and power sources.

(



P.28)

■

If the malfunction indicator lamp comes

on while driving

First check the following:

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)

It is possible that the parking brake is not fully engaged or released



Operate the parking brake switch once again.

This light comes on when the parking brake is not released. If the light
turns off after the parking brake is fully released, the system is operating
normally.

Warning light

Details/Actions

(flashes)

Indicates a malfunction in the brake hold system



Have the vehicle inspected by your Lexus dealer immediately.

334

7-2. Steps to take in an emergency

●

Is the fuel tank empty?

If it is, fill the fuel tank immediately.

●

Is the fuel tank cap loose?

If it is, tighten it securely.

The light will go off after several driving

trips.
If the light does not go off even after several

trips, contact your Lexus dealer as soon as

possible.

■

Electric power steering system warning

light (warning buzzer)

When the battery charge becomes insuffi-

cient 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.339

If none of the tires are punctured:

Turn the engine switch off then turn it to

IGNITION ON mode. Check if the tire

pressure warning light comes on or blinks.



If the tire pressure warning light blinks for

approximately 1 minute then stays on

There may be a malfunction in the tire

pressure 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.299)

■

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 the spare

tire

The spare tire is not equipped with a tire

pressure warning valve and transmitter. If a

tire goes flat, the tire pressure warning light

will not turn off even though the flat tire has

been replaced with the spare tire.

■

Conditions that the tire pressure warn-

ing system may not function properly



P.298

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.

●

Decelerate to the lowest appropriate

speed as soon as possible. Do not

drive over 50 mph (80 km/h).

335

7-2. Steps to take in an emergency

n t

ise

WARNING

●

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.

■

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 system)

malfunction indicator to indicate when

the system is not operating properly. The

TPMS (tire pressure warning system)

malfunction indicator is combined with

the low tire pressure telltale (tire pres-

sure warning light). When the system

detects a malfunction, the telltale will

flash for approximately one minute and

then remain continuously illuminated.

This sequence will continue upon subse-

quent vehicle start-ups as long as the

malfunction exists. When the malfunction

indicator is illuminated, the system may

not be able to detect or signal low tire

pressure as intended.

336

7-2. Steps to take in an emergency

■

Warning messages

The warning messages explained below

may differ from the actual messages

according to operation conditions and vehi-

cle specifications.

■

Warning buzzer

A buzzer may sound when a message is dis-

played.

The buzzer may not be audible if the vehicle

is in a noisy location or if the audio system

volume is high.

■

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.
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.

WARNING

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 func-

tioning 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 alternate

tires and wheels allow the TPMS (tire

pressure warning system) to continue 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.

If a warning message is dis-
played

The multi-information display
shows warnings for system malfunc-
tions and incorrectly performed
operations, and messages that indi-
cate a need for maintenance.
When a message is displayed, per-
form the appropriate corrective
action for the message.

If a warning message is displayed
again after the appropriate actions
have been performed, contact your
Lexus dealer.

Additionally, if a warning light
comes on or flashes at the same
time that a warning message is dis-
played, take the appropriate cor-
rective action for the warning light.
(



P.327)

337

7-2. Steps to take in an emergency

When trouble

ari

ses

■

If “Engine Stopped Steering Power

Low” is displayed

This message is displayed if the engine 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 “Auto Power Off to Conserve Battery”

is displayed

Power was turned off due to the automatic

power off function. Next time when starting

the engine, increase the engine speed

slightly and maintain that level for approxi-

mately 5 minutes to recharge the battery.

■

If “Headlight System Malfunction Visit

Your Dealer” is displayed

The following systems may be malfunction-

ing. Have the vehicle inspected by your

Lexus dealer immediately.

●

The LED headlight system

●

The automatic headlight leveling system

(if equipped)

●

Automatic High Beam

■

If “Radar Cruise Control Unavailable

See Owner's Manual” is displayed

The dynamic radar cruise control with

full-speed range system is suspended tem-

porarily or until the problem shown in the

message is resolved. (causes and coping

methods:



P.163)

■

If “Radar Cruise Control Unavailable” is

displayed

The dynamic radar cruise control with

full-speed range system cannot be used

temporarily. Use the system when it

becomes available again.

■

If a message that indicates the malfunc-

tion of front camera is displayed

The following systems may be suspended

until the problem shown in the message is

resolved. (



P.163, 327)

●

PCS (Pre-Collision system)

●

LTA (Lane Tracing Assist)

●

Automatic High Beam

●

RSA (Road Sign Assist) (if equipped)

●

Dynamic radar cruise control with

full-speed range

■

If a message that indicates the malfunc-

tion of radar sensor is displayed

The following systems may be suspended

until the problem shown in the message is

resolved. (



P.163, 327)

●

PCS (Pre-Collision system)

●

LTA (Lane Tracing Assist)

●

Dynamic radar cruise control with

full-speed range

■

If “Maintenance Required Soon” is dis-

played

Indicates that all maintenance according to

the driven distance on the maintenance
schedule

should be performed soon.

Comes on approximately 4500 miles

(7200 km) after the message has been

reset. If necessary, perform maintenance.

Please reset the message after the mainte-

nance is performed. (



P.276)

: Refer to the separate “Scheduled Main-

tenance” or “Owner’s Manual Supple-
ment” for the maintenance interval
applicable to your vehicle.

■

If “Maintenance Required Visit Your

Dealer” is displayed

Indicates that all maintenance is required to

correspond to the driven distance on the
maintenance schedule

Comes on approximately 5000 miles

(8000 km) after the message has been

reset. (The indicator will not work properly

unless the message has been reset.) Per-

form the necessary maintenance. Please

reset the message after the maintenance is

performed. (



P.276)

: Refer to the separate “Scheduled Main-

tenance” or “Owner’s Manual Supple-
ment” for the maintenance interval
applicable to your vehicle.

■

If “Oil Maintenance Required Soon” is

displayed

Indicates that the engine oil should be

scheduled to be changed.

338

7-2. Steps to take in an emergency

Check the engine oil and change it if neces-

sary. After changing the engine oil, make

sure to reset the message. (



P.289)

■

If “Oil Maintenance Required” is dis-

played

Indicates that the engine oil should be

changed.
Check and change the engine oil, and oil fil-

ter by your Lexus dealer. After changing the

engine oil, make sure to reset the message.

(



P.289)

■

If a message that indicates the need for

visiting your Lexus dealer is displayed

The system or part shown on the

multi-information display is malfunctioning.

Have the vehicle inspected by your Lexus

dealer immediately.

■

If a message that indicates the need for

referring to Owner’s Manual is dis-

played

●

If any of the following messages are

shown on the multi-information display,

follow the instructions.

• “Engine Coolant Temp High” (



P.355)

• “High Transmission Fluid Temp” (



P.133)

●

If any of the following messages are

shown on the multi-information display, it

may indicate a malfunction. Have the

vehicle inspected by your Lexus dealer

immediately.

• “Access System with Elec. Key Malfunc-

tion”

●

If any of the following messages are

shown on the multi-information display, it

may indicate a malfunction. Immediately

stop the vehicle and contact your Lexus

dealer.

• “Braking Power Low”

• “Charging System Malfunction”

• “Oil Pressure Low”

NOTICE

■

If “High Power Consumption Power

to Climate Temporarily Limited” is

displayed frequently

There is a possible malfunction relating

to the charging system or the battery

may be deteriorating. Have the vehicle

inspected by your Lexus dealer.

339

7-2. Steps to take in an emergency

n t

ise



Stop the vehicle in a safe place on a
hard, flat surface.



Set the parking brake.



Shift the shift lever to P.



Stop the engine.



Turn on the emergency flashers.
(



P.318)

If you have a flat tire

Your vehicle is equipped with a
spare tire. The flat tire can be
replaced with the spare tire.

For details about tires:



P.295

WARNING

■

If you have a flat tire

Do not continue driving with a flat tire.

Driving even a short distance with a flat

tire can damage the tire and the wheel

beyond repair, which could result in an

accident.

Before jacking up the vehicle

340

7-2. Steps to take in an emergency

Jack handle
Screwdriver
Towing eyelet
Wheel bolt wrench
Spare tire
Wheel bolt socket
Guide pin
Jack

Location of the spare tire, jack and tools

WARNING

■

Using the tire jack

Observe the following precautions.

Improper use of the tire jack may cause

the vehicle to suddenly fall off the jack,

leading to death or serious injury.

●

Do not use the tire jack for any pur-

pose other than replacing tires or

installing and removing tire chains.

●

Only use the tire jack that comes with

this vehicle for replacing a flat tire.

Do not use it on other vehicles, and do

not use other tire jacks for replacing

tires on this vehicle.

●

Put the jack properly in its jack point.

●

Do not put any part of your body under

the vehicle while it is supported by the

jack.

●

Do not start the engine or drive the

vehicle while the vehicle is supported

by the jack.

Lexus IS300 (2023 year). Manual in english - page 10