Lexus RX450h (2022 year). Manual in english

399

6-3. Do-it-yourself maintenance

Mai
nte

e a

are

Install the cover.

Remove the protective tape.

■

Back-up lights (bulb type)

Open the back door and remove
the cover.

Using a flathead screwdriver, remove the

cover.
To prevent scratching to the vehicle, wrap

the tip of the flathead screwdriver with a

cloth, etc.

Turn the bulb base counterclock-
wise and remove it.

Remove the light bulb.

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

After installing the bulb base, wiggle it

lightly to make sure it is securely installed

and turn on the back-up lights to visually

check that there is no light leaking from

between the bulb base and light unit.

Install the cover.

Align the tabs of the cover with the grooves

and install the cover.

400

6-3. Do-it-yourself maintenance

WARNING

■

To prevent injury

Before performing any light bulb

replacement procedure, be sure to turn

the power switch off. Failure to do so may

result in burns from hot components or a

part of your body may get caught on an

operating component, possibly causing

serious injury.

■

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.

●

Do not attempt to repair or disassem-

ble the light bulbs, connectors, electric

circuits or component parts.

Doing so may result in death or serious

injury due to electric shock.

■

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.

401

When trouble

ari

ses

When trouble arises

7-1. Essential information

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

402

If your vehicle has to be stopped in

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

402

If the vehicle is submerged or

water on the road is rising
........................................................

403

7-2. Steps to take in an emergency

If your vehicle needs to be towed

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

405

If you think something is wrong

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

409

If a warning light turns on or a

warning buzzer sounds ........

410

If a warning message is displayed

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

420

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

424

If the hybrid system will not start

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

436

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

438

If the fuel filler door cannot be

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

438

If the electronic key does not

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

439

If the 12-volt battery is discharged

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

441

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

446

If the vehicle becomes stuck

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

449

402

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 colli-

sion.)

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

Do not pump the brake pedal repeatedly

as this will increase the effort required to

slow the vehicle.

Shift the shift lever to N.



If the shift lever is shifted to N

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

Stop the hybrid system.



If the shift lever cannot be shifted to
N

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

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

Emergency flashers

The emergency flashers are used to
warn other drivers when the 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

403

7-1. Essential information

n t

ris

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 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.

404

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 emer-
gency hammer

: Contact your Lexus dealer or aftermar-

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

: If equipped

■

How to distinguish laminated glass

When looking from the cross-sectional

view point, laminated glass is two sheets of

glass pasted together.

Laminated glass
Tempered glass

WARNING

■

Caution while driving

Do not drive on roads where the roads

may be submerged or the water may be

rising. Otherwise the vehicle may be

damaged and cannot move, as well as

become flooded and set a drift, which

may lead to death.

A
B

405

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, use a towing
dolly. (



P.406, 405)

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.

■

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 dam-

aged, broken debris may hit people,

and cause serious damage.

●

Do not turn the power switch off.

There is a possibility that the steering

wheel is locked and cannot be oper-

ated.

■

Installing towing eyelets to the vehi-

cle

Make sure that towing eyelets are

installed securely. If not securely

installed, towing eyelets may come loose

during towing.

406

7-2. Steps to take in an emergency

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

service before towing.



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



The vehicle makes an abnormal
sound.



From the front

Use a towing dolly under the rear
wheels.



From the rear

Use a towing dolly under the front
wheels.

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.

■

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

Hybrid AWD system and transmission.

(



P.181)

Situations when it is necessary to
contact dealers before towing

Towing with a wheel-lift type
truck

407

7-2. Steps to take in an emergency

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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.

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 short distances
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 towing eyelet.
(



P.425)

Remove the eyelet cover.



Except F SPORT models



F SPORT models

NOTICE

■

Towing with a sling-type truck

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

vent body damage.

Using a flatbed truck

Emergency towing (vehicles
with towing eyelets)

Emergency towing procedure
(vehicles with towing eyelets)

408

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 nut 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 hybrid system.

If the hybrid system does not start, turn the

power switch to ON mode.

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

Turn automatic mode off. (



P.194)

When the shift lever cannot be shifted:



P.190

■

While towing

If the hybrid system is off, the power assist

for the brakes and steering will not function,

making steering and braking more difficult.

■

Wheel nut wrench

Wheel nut wrench is installed in luggage

compartment. (



P.425)

409

7-2. Steps to take in an emergency

When trouble

ari

ses



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 hybrid system



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

410

7-2. Steps to take in an emergency

■

Brake system warning light

■

Brake system warning light

■

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 electric parking brake



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.446)

411

7-2. Steps to take in an emergency

When trouble

ari

ses

■

Hybrid system overheat warning light

(warning buzzer)

: This light illuminates on the multi-information display.

■

Charging system warning light

: Except F SPORT models: This light illuminates on the multi-information display.

F SPORT models: This light illuminates on the meter.

■

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.448)

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. Continuing to drive the vehicle may be dangerous.

Warning light

Details/Actions

Indicates that the engine oil pressure is too low



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

Warning light

Details/Actions

(U.S.A.)

(Canada)

Indicates a malfunction in:



The hybrid system;



The electronic engine control system; or



The electronic throttle control system;



Have the vehicle inspected by your Lexus dealer immediately.

412

7-2. Steps to take in an emergency

■

SRS warning light

■

ABS warning light

■

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

(warning buzzer)

: This light illuminates on the multi-information display.

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 operating;



Drive-Start Control is malfunctioning; or



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



Follow the instructions displayed on the multi-information display.

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



Release the accelerator pedal and depress the brake pedal.

413

7-2. Steps to take in an emergency

When trouble

ari

ses

■

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

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 2.9 gal. (11.0 L, 2.4 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.

414

7-2. Steps to take in an emergency

■

Rear passengers’ seat belt reminder light

(warning buzzer)

: This light illuminates on the center panel.

Regardless of whether or not a rear passenger is present, if the power switch is turned to
ON mode with the rear seat belts unfastened, this light will also illuminate for a certain
period of time.

: Rear passengers’ seat belt warning buzzer:

The rear passengers’ seat belt warning buzzer sounds to alert the rear passenger that his or
her seat belt is not fastened. If the seat belt is unfastened, the buzzer sounds 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)

Warning light

Details/Actions

(RX450h)

(RX450hL)

Warns the rear passengers to fasten their seat belts



Fasten the seat belt.

Warning light

Details/Actions

Indicates the following:



Low tire pressure due to flat tire;



Low tire pressure due to natural causes; or



The tire pressure warning system is malfunctioning



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



P.417)

Warning light

Details/Actions

(orange)

Indicates a malfunction in the LTA (Lane Tracing Assist)



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



P.233)

Lexus RX450h (2022 year). Manual in english - page 24