Lexus TX500H (2024 year). Manual in english

472

6-3. Do-it-yourself maintenance

■

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

the “Warranty and Service Guide”,

“Owner’s Manual Supplement” or “Sched-

uled Maintenance”.

■

Cleaning the air intake vent

Improper handling of the air intake vent

cover and filter may result in damage to

them. If you have any concerns about clean-

ing the filter, contact your Lexus dealer.

Turn the power switch off.

Remove the air intake vent cover.

Disengage the 5 claws as shown in the

illustration, and pull the cover toward the

front of the vehicle to remove it.
To prevent damage, cover the tip of the

screwdriver with a rag.

Remove the filter from the air intake
vent cover.

If dust has accumulated on the air intake

vent cover, remove the dust with a vacuum

cleaner, etc.

Disengage the 2 claws as shown in
the illustration.
Remove the filter from the cover.

Remove the dust and sand from the
filter.

Using a vacuum cleaner, etc., absorb dust

and sand from the filter by profiling the

Cleaning the hybrid battery
(traction battery) air intake
vents

To prevent the fuel economy from
being affected, visually inspect the
hybrid battery (traction battery) air
intake vents periodically for dust
and clogs.

If it is dusty or clogged or if “Main-
tenance Required for Traction Bat-
tery Cooling Parts See Owner’s
Manual” is displayed on the
multi-information display, clean the
air intake vent using the following
procedures:

NOTICE

■

If “Maintenance Required for Trac-

tion Battery Cooling Parts See

Owner’s Manual” is displayed on the

multi-information display

Clean the air intake vent immediately.

If the vehicle is continuously driven with

the warning message displayed, it may

cause a malfunction or output restriction

of the hybrid battery (traction battery).

Cleaning procedure

473

6-3. Do-it-yourself maintenance

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nozzle lightly along the fold.

Hold the filter to the light and check
if it is not clogged.

If the dust or sand cannot be removed

completely, contact your Lexus dealer.

Reinstall the filter to the cover.

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

Install the air intake vent cover.

Insert the tab of the cover as shown
in the illustration.
Push the cover to engage the 5
claws.



If “Maintenance Required for Trac-
tion Battery Cooling Parts See
Owner’s Manual” is displayed on
the multi-information display

Start the hybrid system and check
that the warning message is no lon-
ger displayed.

It may be necessary to drive the vehicle for

approximately 20 minutes before the

warning message is displayed again then

disappears.
If the warning message does not disappear

after some time, have the vehicle inspected

by your Lexus dealer.

■

If the dust or sand on the filter cannot be

removed

It is recommended to use a vacuum cleaner

with plastic brushes.

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.

474

6-3. Do-it-yourself maintenance

WARNING

●

Before cleaning the air intake vents,

make sure to turn the power switch off

to stop the hybrid system.

●

Do not put a hand or leg in the air

intake vent. If it is caught in a cooling

fan, or if it touches a high voltage part

that results in an electric shock, death

or serious injuries may result.

NOTICE

■

When cleaning the air intake vent

Do not use an air blow gun, etc.

Dust may be blown out, possibly causing

a malfunction or output restriction of the

hybrid battery (traction battery).

■

To prevent damage to the vehicle

Observe the following precautions:

●

Do not allow liquid or foreign matter to

enter the air intake vent.

●

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.

■

To prevent damage to the filter

Observe the following precautions.

If the filter is damaged, have it replaced

with a new filter by your Lexus dealer.

●

Do not use an air blow gun, etc.

●

Do not press hard a vacuum cleaner,

etc. against the filter.

●

Do not use a hard brush, such as a

metal brush.

●

Do not break the fold of the filter.

475

6-3. Do-it-yourself maintenance

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■

If the electronic key battery is depleted

The following symptoms may occur:

●

The smart access system with push-but-

ton start and wireless remote control will

not function properly.

●

The operational range will be reduced.

■

When the card key battery needs to be

replaced (if equipped)

The battery for the card key is available only

at your Lexus dealer can replace the bat-

tery for you.



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.

Take out the mechanical key.

Remove the cover.

To prevent damage to the key, cover the tip

of the flathead screwdriver with a tape.

Remove the depleted battery.

Insert a new battery with the “+” terminal

facing up.

Electronic key battery

Replace the battery with a new one
if it is depleted.
As the key may be damaged if the
following procedure is not per-
formed properly, it is recom-
mended that key battery
replacement be performed by your
Lexus dealer.

You will need the following items:

Replacing the battery

476

6-3. Do-it-yourself maintenance

WARNING

■

Battery precautions

Observe the following precautions.

Failure to do so may result in death or

serious 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 chemi-

cal burns in as little as 2 hours and may

result in death or serious injury.

●

Keep away new and removed batteries

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 flathead screwdriver of appropri-

ate size. Applying excessive force may

deform or damage the cover.

■

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.

477

6-3. Do-it-yourself maintenance

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Turn the power switch off.

Open the fuse box cover.



Engine compartment

Push in the claw and remove the lid.
• Type A

• Type B



Driver’s side instrument panel

Remove the lid.



Luggage compartment

Open the deck board (



P.406) and dis-

engage the 7 claws and pull the side deck
board to remove it.

Push in the claw and remove the lid.

Remove the fuse with the pullout
tool.

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

478

6-3. Do-it-yourself maintenance

Only some fuses can be removed
using the pullout tool.

Check if the fuse is blown.

Replace the blown fuse with a new fuse of

an appropriate amperage rating. The

amperage rating can be found on the fuse

box lid.
Many types of fuse are used on this vehicle.

This illustration shows a common type of

fuse used on this vehicle.



Type A

Normal fuse
Blown fuse



Type B

Normal fuse
Blown fuse



Type C

Normal fuse
Blown fuse



Type D

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.480)

●

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.

479

6-3. Do-it-yourself maintenance

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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 pres-
sure 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

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.

■

Fuse box near the power control unit

Never check or replace the fuses as

there are high voltage parts and wiring

near the fuse box.

Doing so may cause electric shock,

resulting in death or serious injury.

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

480

6-3. Do-it-yourself maintenance

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.

■

LED Lights

The lights 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 lens of any light 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.

Light bulbs

If any lights burn out, have it
replaced by your Lexus dealer.

481

When trouble

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When trouble arises

7-1. Essential information

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

482

If your vehicle has to be stopped in

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

482

If the vehicle is submerged or

water on the road is rising ..

483

7-2. Steps to take in an emergency

If your vehicle needs to be towed

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

485

If you think something is wrong

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

486

If a warning light turns on or a

warning buzzer sounds .......

488

If a warning message is displayed

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

498

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

505

If the hybrid system will not start

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

513

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

514

If the fuel filler door cannot be

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

515

If the electronic key does not

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

516

If a door cannot be opened using

the door opener switch.........

518

If the 12-volt battery is discharged

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

520

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

526

If the vehicle becomes stuck

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

529

482

7-1. Essential information

7-1.Essential information

Press the switch.

All the turn signal lights will flash. 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

collision.)

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 position to N.



If the shift position 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 position 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 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

483

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 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 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 sys-

tem.

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 floodedwith 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.

484

7-1. Essential information

not operate, the engine and motor stop, and

the vehicle may not be able to get moving.

■

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 adrift, which

may lead to death.

485

7-2. Steps to take in an emergency

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7-2.Steps to take in an emergency



From the front

Use a towing dolly under the rear
wheels.



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.

Towing with a wheel-lift type
truck

WARNING

Observe the following precautions. Fail-

ure to do so may result in death or seri-

ous injury.

■

When towing the vehicle

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, or electricity generated

by the operation of the motor may cause

a fire to occur depending on the nature

of the damage or malfunction.

NOTICE

■

To prevent damage to the vehicle

when towing using a wheel-lift type

truck

●

Do not tow the vehicle from the rear

when the power switch is off. The

steering lock mechanism is not strong

enough to hold the front wheels

straight.

●

When raising the vehicle, ensure ade-

quate ground clearance for towing at

the opposite end of the raised vehicle.

Without adequate clearance, the vehi-

cle could be damaged while being

towed.

486

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

■

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

during emergency towing

Do not secure cables or chains to the

suspension components.

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

488

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.526)

489

7-2. Steps to take in an emergency

When trouble

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■

Hybrid system overheat warning light

(warning buzzer)

: This light illuminates on the multi-information display.

■

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 light

Details/Actions

Indicates the hybrid system has overheated



Stop the vehicle in a safe place.
Handling method (



P.526)

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;



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.

490

7-2. Steps to take in an emergency

■

SRS warning light

■

ABS warning light

■

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

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.

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; or



Drive-Start Control 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.

491

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, 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 light (warning buzzer)

: 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.

Warning light

Details/Actions

Indicates that remaining fuel is approximately 2.5 gal. (9.7 L, 2.1 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 second and/or third seat passengers to fasten their seat belts.
An indicator corresponding to an unfastened second or third seat seat
belt will illuminate.



Fasten the seat belt.

492

7-2. Steps to take in an emergency

■

Tire pressure warning light (warning buzzer)

■

PCS warning light (warning buzzer)

■

LTA indicator (warning buzzer)

■

LDA indicator (warning buzzer)

Warning light

Details/Actions

When the light comes on (a buzzer sounds):



Low tire inflation pressure from natural causes



After the temperature of the tires has lowered sufficiently, check
the inflation pressure of each tire and adjust them to the specified
level.



Low tire inflation pressure from flat tire



Immediately stop the vehicle in a safe place and perform the nec-
essary actions. (



P.495)

When the light comes on after blinking for approximately 1 minute (a
buzzer does not sounds):
Malfunction in the tire pressure warning system



Have the system checked by your Lexus dealer.

Warning light

Details/Actions

Indicates a malfunction in the PCS (Pre-Collision System).



Follow the instructions displayed on the multi-information display.

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

Warning light

Details/Actions

(yellow)

Indicates a malfunction in the LTA (Lane Tracing Assist)



Follow the instructions displayed on the multi-information display.

Warning light

Details/Actions

(yellow)

Indicates a malfunction in the LDA (Lane Departure Alert).



Follow the instructions displayed on the multi-information display.

493

7-2. Steps to take in an emergency

When trouble

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■

PDA indicator (warning buzzer)

■

Dynamic radar cruise control indicator (warning buzzer)

■

Cruise control indicator (warning buzzer)

■

Driving assist information indicator

Warning light

Details/Actions

(yellow)

Indicates a malfunction in the PDA (Proactive Driving Assist).



Follow the instructions displayed on the multi-information display.

Warning light

Details/Actions

(yellow)

Indicates a malfunction in the dynamic radar cruise control.



Follow the instructions displayed on the multi-information display.

Warning light

Details/Actions

(yellow)

Indicates a malfunction in the cruise control.



Follow the instructions displayed on the multi-information display.

Warning light

Details/Actions

Indicates either of the following systems may be malfunctioning.



PCS (Pre-Collision System)



LDA (Lane Departure Alert)



Follow the instructions displayed on the multi-information display.

Indicates one of the following systems is malfunctioning or disabled.



PKSB (Parking Support Brake)



RCD (Rear Camera Detection)



BSM (Blind Spot Monitor)



RCTA (Rear cross traffic alert)



Safe Exit Assist (with door opening control)



Follow the instructions displayed on the multi-information display.

494

7-2. Steps to take in an emergency

■

Intuitive parking assist OFF indicator (warning buzzer)

■

Slip indicator

: If equipped

■

Parking brake indicator

Warning light

Details/Actions

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 sounds:
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.503)

Warning light

Details/Actions

(illuminates)

Indicates a malfunction in:



The VSC system;



The TRAC system;



The Trail Mode function;



The Trailer Sway Control

; 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.

495

7-2. Steps to take in an emergency

When trouble

ari

ses

■

Brake hold operated indicator

■

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 indicates problems with

the following:

●

Airbag sensor assembly

●

Front impact sensors

●

Side impact sensors (front door)

●

Side impact sensors (front)

●

Side impact sensors (rear door)

●

Front passenger occupant classification

sensors

●

Driver’s seat position sensor

●

Front passenger’s seat belt buckle switch

●

“AIR BAG ON” indicator light

●

“AIR BAG OFF” indicator light

●

Seat belt pretensioners

●

SRS airbags

●

SRS system related wiring harnesses and

power sources

■

If the malfunction indicator lamp comes

on while driving

First check the following:

●

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 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.505

If none of the tires are punctured:

Turn the power switch off then turn it to ON.

Check if the tire pressure warning light

comes on or blinks.



If the tire pressure warning light blinks for

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-

Warning light

Details/Actions

(flashes)

Indicates a malfunction in the brake hold system



Have the vehicle inspected by your Lexus dealer immediately.

496

7-2. Steps to take in an emergency

sure of each tire is at the specified level

and perform the tire inflation pressure

setting procedure.. (



P.462)

If the warning light does not turn off even

after several minutes have elapsed since

performing the tire inflation pressure setting

procedure, have the vehicle inspected by

your Lexus dealer immediately.

■

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.460

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. Adjust the tire infla-

tion 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.

497

7-2. Steps to take in an emergency

n t

ris

WARNING

■

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.

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.

499

7-2. Steps to take in an emergency

When trouble

ari

ses

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

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

■

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.451)

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 “Power Reduced to Lower Engine

Temp” is displayed

This message may be displayed when the

engine coolant temperature is high.
At that time, the engine power output is

reduced until the temperature decreases to

the specified level. It is still possible to con-

tinue driving normally, meanwhile the

acceleration performance or vehicle speed

may be lowered. After driving for a while

and the engine coolant temperature is

dropped, this message will disappear and

Messages and warnings

Warning light

Warning buzzer

Warning

Sounds



Indicates an important situation, such as when a
system related to driving is malfunctioning or that
danger may result if the correction procedure is
not performed



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

Comes on or

flashes

Sounds

Indicates an important situation, such as when the
systems shown on the multi-information display
may be malfunctioning

Does not sound



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



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

500

7-2. Steps to take in an emergency

engine power output will resume once the

engine coolant temperature has decreased

to normal.
If after driving for a while the message does

not disappear or it comes on and off fre-

quently, contact your Lexus dealer.

■

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.526

■

If “Shift to P Before Exiting Vehicle” is

displayed

This message is displayed when the driver’s

door is opened without turning the power

switch off with the shift lever in any position

other than P. Change the shift lever to P.

■

If “Shift is in N Release Accelerator

Before Shifting” is displayed

The accelerator pedal has been depressed

when the shift position is in N.
Release the accelerator pedal and change

the shift position to D, M or R.

■

If “Press brake when vehicle is stopped

Hybrid system may overheat” is dis-

played

The message may be displayed when the

accelerator pedal is depressed to hold the

vehicle while the vehicle is stopped on an

incline, etc. The hybrid system may over-

heat. Release the accelerator pedal and

depress the brake pedal.

■

If “Auto Power OFF to Conserve Bat-

tery” is displayed

Power was cut off due to the automatic

power off function. Next time when starting

the hybrid system, operate the hybrid sys-

tem for approximately 5 minutes to

recharge the 12-volt 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)

●

AHB (Automatic High Beam)

●

AHS (Adaptive High-beam System) (if

equipped)

■

If “System Malfunction Visit Your

Dealer” is displayed

Indicates one of the following systems is dis-

abled.

●

PCS (Pre-Collision System)

●

LDA (Lane Departure Alert)

●

LTA (Lane Tracing Assist)

●

LCA (Lane Change Assist) (if

equipped)

●

AHB (Automatic High Beam)

●

AHS (Adaptive High-beam System) (if

equipped)

●

Dynamic radar cruise control

●

RSA (Road Sign Assist) (if equipped)

●

PDA (Proactive Driving Assist)

●

BSM (Blind Spot Monitor)

●

RCTA (Rear Cross Traffic Alert)

●

Safe Exit Assist

●

Intuitive Parking Assist

●

PKSB (Parking Support Brake)

●

RCD (Rear camera detection)

Have the vehicle inspected by your Lexus

dealer immediately.

■

If “System Stopped See Owner's Man-

ual” is displayed

Indicates one of the following systems is dis-

abled.

●

PCS (Pre-Collision System)

●

LDA (Lane Departure Alert)

●

LTA (Lane Tracing Assist)

●

LCA (Lane Change Assist) (if

equipped)

●

AHB (Automatic High Beam)

●

AHS (Adaptive High-beam System) (if

501

7-2. Steps to take in an emergency

When trouble

ari

ses

equipped)

●

Dynamic radar cruise control

●

RSA (Road Sign Assist) (if equipped)

●

PDA (Proactive Driving Assist)

●

BSM (Blind Spot Monitor)

●

RCTA (Rear Cross Traffic Alert)

●

Safe Exit Assist

●

Intuitive Parking Assist

●

PKSB (Parking Support Brake)

●

RCD (Rear camera detection)

Follow the following correction methods.
• Check the voltage of the 12-volt battery
• Check the sensors that the Lexus Safety

System+ 3 uses for foreign matter cover-

ing them. Remove them if any. (



P.225)

• Check if the back door is open.
Indicates the sensors may not be operating

properly.

●

Intuitive Parking Assist (



P.303)

●

PKSB (static objects front and rear of the

vehicle) (



P.325)

●

PKSB (moving vehicles rear of the vehi-

cle) (



P.327)

●

PKSB (pedestrians rear of the vehicle)

(



P.329)

●

PKSB (pedestrians rear of the vehicle)

(



P.329)

●

PKSB (static objects around the vehicle)

(if equipped) (



P.325)

●

RCD (



P.317)

●

BSM (Blind Spot Monitor) (



P.295)

●

RCTA (Rear Cross Traffic Alert)

(



P.313)

●

Safe Exit Assist (



P.300)

Check the rear bumper around the sensors

(



P.292) used by the BSM, RCTA, Safe

Exit Assist for foreign matter covering them.

Remove them if any.
Check the sensors including camera sen-

sors used by the Intuitive Parking Assist, and

PKSB, for foreign matter covering them.

Remove them if any.
When problems are solved and the sensors

are operational, this indication may disap-

pear by itself.

■

If “System Stopped Front Camera Low

Visibility See Owner's Manual” is dis-

played

Indicates one of the following systems is dis-

abled.

●

PCS (Pre-Collision System)

●

LDA (Lane Departure Alert)

●

LTA (Lane Tracing Assist)

●

LCA (Lane Change Assist) (if

equipped)

●

AHB (Automatic High Beam)

●

AHS (Adaptive High-beam System) (if

equipped)

●

Dynamic radar cruise control

●

RSA (Road Sign Assist) (if equipped)

●

PDA (Proactive Driving Assist)

Follow the following correction methods.
• Using the windshield wipers, remove the

dirt or foreign matter from the wind-

shield.

• Using the air conditioning system, defog

the windshield.

• Close the hood, remove any stickers, etc.

to clear the obstruction in front of the

front camera.

■

If “System Stopped Front Camera Out

of Temperature Range Wait until Nor-

mal Temperature” is displayed

Indicates one of the following systems is dis-

abled.

●

PCS (Pre-Collision System)

●

LDA (Lane Departure Alert)

●

LTA (Lane Tracing Assist)

●

LCA (Lane Change Assist) (if

equipped)

●

AHB (Automatic High Beam)

●

AHS (Adaptive High-beam System) (if

equipped)

502

7-2. Steps to take in an emergency

●

Dynamic radar cruise control

●

RSA (Road Sign Assist) (if equipped)

●

PDA (Proactive Driving Assist)

Follow the following correction methods.
• If the front camera is hot, such as after the

vehicle is parked in the sun, use the air

conditioning system to decrease the tem-

perature around the front camera

• If a sunshade was used when the vehicle

was parked, depending on its type, the

sunlight reflected from the surface of the

sunshade may cause the temperature of

the front camera to become excessively

high

• If the front camera is cold, such after the

vehicle is parked in an extremely cold

environment, use the air conditioning sys-

tem to increase the temperature around

the front camera

■

If “System Stopped Front Radar Sensor

Blocked Clean Radar Sensor” is dis-

played

Indicates one of the following systems is dis-

abled.

●

PCS (Pre-Collision System)

●

LDA (Lane Departure Alert)

●

LTA (Lane Tracing Assist)

●

LCA (Lane Change Assist) (if

equipped)

●

AHB (Automatic High Beam)

●

AHS (Adaptive High-beam System) (if

equipped)

●

Dynamic radar cruise control

●

PDA (Proactive Driving Assist)

Follow the following correction methods.
• Check if there is any foreign matter

attached to the radar sensor or radar

sensor cover and clean them if necessary

(



P.226)

• This message may be displayed when

driving in an open area with few nearby

vehicles or structures, such as a desert,

grasslands, suburbs, etc. The message

may be cleared by driving the vehicle in

an area with structures, vehicles, etc.

nearby.

■

If “System Stopped Front Radar Sensor

Out of Temperature Range Wait until

Normal Temperature” is displayed

Indicates one of the following systems is dis-

abled.

●

PCS (Pre-Collision System)

●

LDA (Lane Departure Alert)

●

LTA (Lane Tracing Assist)

●

LCA (Lane Change Assist) (if

equipped)

●

AHB (Automatic High Beam)

●

AHS (Adaptive High-beam System) (if

equipped)

●

Dynamic radar cruise control

●

PDA (Proactive Driving Assist)

The temperature of the radar sensor is out-

side of the operating range. Wait for the

temperature to become appropriate.

■

If “System Stopped Front Radar In Self

Calibration See Owner's Manual” is dis-

played

Indicates one of the following systems is dis-

abled.

●

PCS (Pre-Collision System)

●

LDA (Lane Departure Alert)

●

LTA (Lane Tracing Assist)

●

LCA (Lane Change Assist) (if

equipped)

●

AHB (Automatic High Beam)

●

AHS (Adaptive High-beam System) (if

equipped)

●

Dynamic radar cruise control

●

PDA (Proactive Driving Assist)

Follow the following correction methods.
• Check if there is any foreign matter

attached to the radar sensor or radar

sensor cover and clean them if necessary

(



P.226)

• The radar sensor may be misaligned and

will be adjusted automatically while driv-

ing. Continue driving for a while.

503

7-2. Steps to take in an emergency

When trouble

ari

ses

■

If “Unavailable Activation Condition not

Satisfied See Owner's Manual” is dis-

played

The LCA function cannot be used as

the operating conditions have not been

met.
Operate the turn signal lever again after all

of the operating conditions are met.

■

If “Cruise Control Unavailable See

Owner's Manual” is displayed

Indicates one of the following systems is dis-

abled.

●

Dynamic radar cruise control

●

Cruise control

A message is displayed when the driving

assist switch is pushed repeatedly.
Press the driving assist switch quickly and

firmly.

■

If “Driver Monitor Out of Temperature

Range Wait until Normal Temperature”

is displayed

Indicates one of the following systems is dis-

abled.

●

Driver monitor (if equipped)

●

Traffic Jam Assist (if equipped)

The temperature of the driver monitor cam-

era is outside of the operating range. Wait

for the temperature to become appropri-

ate.

■

If “Driver Monitor Unavailable See

Owner's Manual” is displayed

The lens of the driver monitor camera may

be dirty.
When there is dirt on the camera lens, clean

it with a dry, soft cloth so as to not damage

it.

■

If “Parking Assist Unavailable Sensor

Blocked” is displayed

A sensor may be covered with water drops,

ice, snow, dirt, etc. Remove the water drops,

ice, snow, dirt, etc., from the sensor to return

the system to normal.
Also, due to ice forming on a sensor at low

temperatures, a warning message may be

displayed or the sensor may not be able to

detect an object. Once the ice melts, the

system will return to normal.
If a sensor is dirty, the position of the dirty

sensor will be shown on the display.
If an abnormality is displayed even though

there are no water drops, ice, snow or dirt,

the sensor may be operating abnormally.

Have the vehicle inspected by your Lexus

dealer.

■

If “Parking Assist Unavailable Low Visi-

bility See Owner's Manual” is displayed

Indicates one of the following systems is dis-

abled.

●

RCD (Rear camera detection)

●

PKSB (Parking Support Brake)

Remove any dirt or foreign matter from the

rear camera.

■

If “Shift System Malfunction Shifting

Unavailable Drive to a Safe Place and

Stop” or “Shift System Malfunction

Driving Unavailable” is displayed

There is a malfunction in the shift control

system. Have the vehicle inspected by your

Lexus dealer immediately.

■

If a message that indicates the need for

the shift lever operation is displayed

To prevent the shift lever from being oper-

ated incorrectly or the vehicle from moving

unexpectedly, a message that requires shift-

ing the shift position may be displayed on

the multi-information display. In that case,

follow the instruction of the message and

shift the shift position.

■

If “Check Fuel Cap” is displayed

The fuel tank cap is not properly installed.

Correctly install the fuel tank cap.

■

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.440)

Lexus TX500H (2024 year). Manual in english - page 15