Lexus UX250h (2023 year). Manual in english

315

ain

ten

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Maintenance and care

6-1. Maintenance and care

Cleaning and protecting the vehi-

cle exterior.................................

316

Cleaning and protecting the vehi-

cle interior ..................................

319

6-2. Maintenance

Maintenance requirements ..

322

General maintenance.............

323

Emission inspection and mainte-

nance (I/M) programs .........

325

6-3. Do-it-yourself maintenance

Do-it-yourself service precau-

tions..............................................

327

Hood...............................................

329

Positioning a floor jack............

330

Engine compartment................

331

12-volt battery.............................

336

Tires ................................................

339

Replacing the tire......................

347

Tire inflation pressure..............

352

Wheels...........................................

354

Air conditioning filter...............

355

Cleaning the hybrid battery (trac-

tion battery) air intake vent

356

Electronic key battery .............

359

Checking and replacing fuses

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

361

Headlight aim..............................

364

Light bulbs....................................

365

316

6-1. Maintenance and care

6-1.Maintenance and care



Working from top to bottom, liber-
ally apply water to the vehicle body,
wheel wells and underside of the
vehicle to remove any dirt and dust.



Wash the vehicle body using a
sponge or soft cloth, such as a
chamois.



For hard-to-remove marks, use car
wash soap and rinse thoroughly with
water.



Wipe away any water.



Wax the vehicle when the water-
proof coating deteriorates.

If water does not bead on a clean surface,
apply wax when the vehicle body is cool.

■

Self-restoring coat

The vehicle body has a self-restoring coat-

ing that is resistant to small surface

scratches caused in a car wash etc.

●

The coating lasts for 5 to 8 years from

when the vehicle is delivered from the

plant.

●

The restoration time differs depending on

the depth of the scratch and outside tem-

perature. The restoration time may

become shorter when the coating is

warmed by applying warm water.

●

Deep scratches caused by keys, coins,

etc. cannot be restored.

●

Do not use wax that contain abrasives.

■

Automatic car washes

●

Before washing the vehicle:

• Fold the mirrors

• Turn off the power back door (if

equipped)

Start washing from the front of the vehicle.
Extend the mirrors before driving.

●

Brushes used in automatic car washes

may scratch the vehicle surface, parts

(wheel, etc.) and harm your vehicle’s

paint.

●

Rear spoiler may not be washable in

some automatic car washes. There may

also be an increased risk of damage to

vehicle.

■

High pressure car washes

As water may enter the cabin, do not bring

the nozzle tip near the gaps around the

doors or perimeter of the windows, or spray

these areas continuously.

■

Note for a smart access system with

push-button start

●

If the door handle becomes wet while the

electronic key is within the effective

range, the door may lock and unlock

repeatedly. In that case, follow the follow-

ing correction procedures to wash the

vehicle:

• Place the key in a position 6 ft. (2 m) or

more separate from the vehicle while the

vehicle is being washed. (Take care to

ensure that the key is not stolen.)

• Set the electronic key to battery-saving

mode to disable the smart access system

with push-button start. (



P.128)

●

If the electronic key is inside the vehicle

and a door handle becomes wet during a

car wash, a buzzer may sound outside the

vehicle and “Key Detected in Vehicle”

may be shown on the multi-information

display. To turn off the alarm, lock all the

doors.

■

Wheels and wheel ornaments

●

Remove any dirt immediately by using a

neutral detergent.

●

Wash detergent off with water immedi-

ately after use.

●

To protect the paint from damage, make

Cleaning and protecting the
vehicle exterior

Perform cleaning in a manner
appropriate to each component
and its material.

Cleaning instructions

317

6-1. Maintenance and care

ain

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sure to observe the following precau-

tions.

• Do not use acidic, alkaline or abrasive

detergent

• Do not use hard brushes

• Do not use detergent on the wheels

when they are hot, such as after driving or

parking in hot weather

■

Brake pads and calipers

Rust may form if the vehicle is parked with

wet brake pads or disc rotors, causing them

to stick. Before parking the vehicle after it is

washed, drive slowly and apply the brakes

several times to dry the parts.

■

Bumpers

Do not scrub with abrasive cleaners.

■

Front side windows water-repellent

coating

The following precautions can extend the

effectiveness of the water-repellent coat-

ing.

●

Remove any dirt, etc. from the front side

windows regularly.

●

Do not allow dirt and dust to accumulate

on the windows for a long period.

Clean the windows with a soft, damp

cloth as soon as possible.

●

Do not use wax or glass cleaners that

contain abrasives when cleaning the win-

dows.

●

Do not use any metallic objects to

remove condensation build up.

■

Plated portions

If dirt cannot be removed, clean the parts as

follows:

●

Use a soft cloth dampened with an

approximately 5% solution of neutral

detergent and water to clean the dirt off.

●

Wipe the surface with a dry, soft cloth to

remove any remaining moisture.

●

To remove oily deposits, use alcohol wet

wipes or a similar product.

WARNING

■

When washing the vehicle

Do not apply water to the inside of the

engine compartment. Doing so may

cause the electrical components etc. to

catch fire.

■

When cleaning the windshield (vehi-

cles with rain-sensing windshield wip-

ers)

Set the wiper switch to off.

If the switch is in AUTO, the wipers may

operate unexpectedly in the following

situations, and may result in hands being

caught or other serious injuries and

cause damage to the wiper blades.

Off

AUTO

●

When the upper part of the windshield

where the raindrop sensor is located is

touched by hand

●

When a wet rag or similar is held close

to the raindrop sensor

●

If something bumps against the wind-

shield

●

If you directly touch the raindrop sen-

sor body or if something bumps into

the raindrop sensor

■

Precautions regarding the exhaust

pipe

Exhaust gasses cause the exhaust pipe to

become quite hot.

When washing the vehicle, be careful not

to touch the pipe until it has cooled suffi-

ciently, as touching a hot exhaust pipe

can cause burns.

318

6-1. Maintenance and care

WARNING

■

Precautions regarding the rear

bumper

If the paint of the rear bumper is chipped

or scratched, the following systems may

not function correctly. If this occurs, con-

sult your Lexus dealer.

●

Lexus Safety System + 2.5

●

BSM (if equipped)

●

RCTA (if equipped)

●

PKSB (if equipped)

NOTICE

■

To prevent paint deterioration and

corrosion on the body and compo-

nents (aluminum wheels etc.)

●

Wash the vehicle immediately in the

following cases:

• After driving near the sea coast
• After driving on salted roads
• If coal tar or tree sap is present on the

paint surface

• If dead insects, insect droppings or

bird droppings are present on the

paint surface

• After driving in an area contaminated

with soot, oily smoke, mine dust, iron

powder or chemical substances

• If the vehicle becomes heavily soiled

with dust or mud

• If liquids such as benzene and gasoline

are spilled on the paint surface

●

If the paint is chipped or scratched,

have it repaired immediately.

●

To prevent the wheels from corroding,

remove any dirt and store in a place

with low humidity when storing the

wheels.

■

Cleaning the exterior lights

●

Wash carefully. Do not use organic

substances or scrub with a hard brush.

This may damage the surfaces of the

lights.

●

Do not apply wax to the surfaces of the

lights.

Wax may cause damage to the lenses.

■

When using an automatic car wash

(vehicles with rain-sensing windshield

wipers)

Set the wiper switch to the off position.

If the wiper switch is in AUTO, the wipers

may operate and the wiper blades may

be damaged.

■

When using a high pressure car wash

●

When washing the vehicle, do not

spray the camera or its surrounding

area directly with a high pressure

washer. Shock applied from high pres-

sure water may cause the device to not

operate normally.

●

Do not spray water directly on the

radar which is equipped behind the

radar sensor cover. Otherwise it may

cause the device to be damaged.

●

Do not bring the nozzle tip close to

boots (rubber or resin manufactured

cover), connectors or the following

parts. The parts may be damaged if

they come into contact with high-pres-

sure water.

• Traction related parts
• Steering parts
• Suspension parts
• Brake parts

●

Keep the cleaning nozzle at least 11.9

in. (30 cm) away from the vehicle

body. Otherwise resin section, such as

moldings and bumpers, may be

deformed and damaged. Also, do not

continuously hold the nozzle in the

same place.

319

6-1. Maintenance and care

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

Remove dirt and dust using a vac-
uum cleaner. Wipe dirty surfaces
with a cloth dampened with luke-
warm water.



If dirt cannot be removed, wipe it off
with a soft cloth dampened with
neutral detergent diluted to approx-
imately 1%.
Wring out any excess water from
the cloth and thoroughly wipe off
remaining traces of detergent and
water.

■

Shampooing the carpets

There are several commercial foaming-

type cleaners available. Use a sponge or

brush to apply the foam. Rub in overlapping

circles. Do not use water. Wipe dirty sur-

faces and let them dry. Excellent results are

obtained by keeping the carpet as dry as

possible.

■

Handling the seat belts

Clean with mild soap and lukewarm water

using a cloth or sponge. Also check the

belts periodically for excessive wear, fray-

ing or cuts.

■

Front side windows with UV protective

coating (vehicles with UV protective

coating)

The front side windows have UV protective

coating. To prevent any damage to the UV

protective coating, observe the following:

●

If the windows are dirty, gently wipe them

NOTICE

●

Do not spray the lower part of the

windshield continuously. If water

enters the air conditioning system

intake located near the lower part of

the windshield, the air conditioning

system may not operate correctly.

●

Do not wash the underside of the vehi-

cle using a high pressure car washer.

Cleaning and protecting the
vehicle interior

Perform cleaning in a manner
appropriate to each component
and its material.

Protecting the vehicle interior

320

6-1. Maintenance and care

with a cloth soaked in water or lukewarm

water as soon as possible.

●

If the windows are very dirty, do not open

and close them repeatedly.

WARNING

■

Water in the vehicle

●

Do not splash or spill liquid in the vehi-

cle, such as on the floor, in the hybrid

battery (traction battery) air intake

vent, and in the luggage compartment.

(



P.66)

Doing so may cause the hybrid bat-

tery, electrical components, etc. to

malfunction or catch fire.

●

Do not get any of the SRS components

or wiring in the vehicle interior wet.

(



P.31)

An electrical malfunction may cause

the airbags to deploy or not function

properly, resulting in death or serious

injury.

●

Vehicles with wireless charger: Do not

let the wireless charger (



P.298) get

wet. Failure to do so may cause the

charger to become hot and cause

burns or could cause electric shock

resulting in death or serious injury.

■

Cleaning the interior (especially

instrument panel)

Do not use polish wax or polish cleaner.

The instrument panel may reflect off the

windshield, obstructing the driver’s view

and leading to an accident, resulting in

death or serious injury.

NOTICE

■

Cleaning detergents

●

Do not use the following types of

detergent, as they may discolor the

vehicle interior or cause streaks or

damage to painted surfaces:

• Non-seat portions: Organic sub-

stances such as benzene or gasoline,

alkaline or acidic solutions, dye, and

bleach

• Seats: Alkaline or acidic solutions,

such as thinner, benzene, and alcohol

●

Do not use polish wax or polish

cleaner. The instrument panel’s or

other interior part’s painted surface

may be damaged.

■

Water on the floor

Do not wash the vehicle floor with water.

Vehicle systems such as the audio sys-

tem may be damaged if water comes into

contact with electrical components such

as the audio system above or under the

floor of the vehicle. Water may also

cause the body to rust.

■

When cleaning the inside of the wind-

shield

Do not allow glass cleaner to contact the

lens. Also, do not touch the lens.

(



P.195)

■

Cleaning the inside of the rear win-

dow

●

Do not use glass cleaner to clean the

rear window, as this may cause dam-

age to the rear window defogger

heater wires or antenna. Use a cloth

dampened with lukewarm water to

gently wipe the window clean. Wipe

the window in strokes running parallel

to the heater wires or antenna.

●

Be careful not to scratch or damage

the heater wires or antenna.

321

6-1. Maintenance and care

ain

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

Remove dirt using a water-damp-
ened soft cloth or synthetic chamois.



Wipe the surface with a dry soft
cloth to remove any remaining
moisture.

■

Cleaning the areas with satin-finish

metal accents

The metal areas use a layer of real metal for

the surface. It is necessary to clean them

regularly. If dirty areas are left uncleaned

for long periods of time, they may be diffi-

cult to clean.

■

Cleaning the leather



Remove dirt and dust using a vac-
uum cleaner.



Wipe off any excess dirt and dust
with a soft cloth dampened with
diluted detergent.

Use a diluted water solution of approxi-
mately 5% neutral wool detergent.



Wring out any excess water from
the cloth and thoroughly wipe off all
remaining traces of detergent.



Wipe the surface with a dry, soft
cloth to remove any remaining
moisture. Allow the leather to dry in

a shaded and ventilated area.

■

Cleaning the synthetic leather



Remove dirt and dust using a vac-
uum cleaner.



If the area gets dirty, wipe it off with
a soft cloth dampened with water
and wrung out.



If dirt cannot be removed by wiping
with water, wipe it off using cleaner
for leather.

■

Caring for leather areas

Lexus recommends cleaning the interior of

the vehicle at least twice a year to maintain

the quality of the vehicle’s interior.

■

Dirt on the synthetic leather areas

Ingrained dirt which has been left

uncleaned for long periods of time is diffi-

cult to clean. Lexus recommends cleaning

the area regularly.

NOTICE

■

Cleaning the front side windows

Do not use any compound or abrasive

product (e.g., glass cleaner, detergent,

wax) to clean the windows. It may dam-

age the coating.

Cleaning the areas with satin-
finish metal accents

Cleaning the leather areas

NOTICE

■

Preventing damage to leather sur-

faces

Observe the following precautions to

avoid damage to and deterioration of

leather surfaces:

●

Remove any dust or dirt from leather

surfaces immediately.

●

Do not expose the vehicle to direct

sunlight for extended periods of time.

Park the vehicle in the shade, espe-

cially during summer.

●

Do not place items made of vinyl, plas-

tic, or containing wax on the uphol-

stery, as they may stick to the leather

surface if the vehicle interior heats up

significantly.

322

6-2. Maintenance

6-2.Maintenance

■

Repair and replacement

It is recommended that genuine Lexus parts

be used for repairs to ensure performance

of each system. If non-Lexus parts are used

in replacement or if a repair shop other than

a Lexus dealer performs repairs, confirm

the warranty coverage.

■

Allow inspection and repairs to be per-

formed by a Lexus dealer

●

Lexus technicians are well-trained spe-

cialists and are kept up to date with the

latest service information. They are well

informed about the operation of all sys-

tems on your vehicle.

●

Keep a copy of the repair order. It proves

that the maintenance that has been per-

formed is under warranty coverage. If

any problem should arise while your vehi-

cle is under warranty, your Lexus dealer

will promptly take care of it.

General maintenance should be per-
formed on a daily basis. This can be
done by yourself or by a Lexus dealer.

Scheduled maintenance should be
performed at specified intervals
according to the maintenance sched-
ule.

For details about maintenance items and
schedules, refer to the “Warranty and Ser-
vice Guide”, “Owner’s Manual Supple-
ment” or “Scheduled Maintenance”.

■

Resetting the message indicating main-

tenance is required

After the required maintenance is per-

formed according to the maintenance

schedule, please reset the message.

To reset the message, follow the proce-

dures described below:

Press

of the meter control

switches and select

Press

of the meter control

switches, select “Vehicle Settings” and
then press “OK”.

Maintenance requirements

To ensure safe and economical
driving, day-to-day care and regu-
lar maintenance are essential. It is
the owner’s responsibility to per-
form regular checks. Lexus recom-
mends the following maintenance:

WARNING

■

If your vehicle is not properly main-

tained

Improper maintenance could result in

serious damage to the vehicle and possi-

ble serious injury or death.

■

Handling of the 12-volt battery

●

Engine exhaust, some of its constitu-

ents, and a wide variety of automobile

components contain or emit chemicals

known to the State of California to

cause cancer and birth defects and

other reproductive harm. Work in a

well ventilated area.

●

Oils, fuels and fluids contained in vehi-

cles as well as waste produced by

component wear contain or emit

chemicals known to the State of Cali-

fornia to cause cancer and birth

defects or other reproductive harm.

Avoid exposure and wash any affected

area immediately.

●

12-volt battery posts, terminals and

related accessories contain lead and

lead compounds which are known to

cause brain damage. Wash your hands

after handling. (



P.336)

General maintenance

Scheduled maintenance

323

6-2. Maintenance

ain

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Press

of the meter control

switches, select “Scheduled Mainte-
nance” and then press and hold the
“OK”.

Select “Yes” and press “OK”.

A message will be displayed when the reset

procedure has been completed.

You can perform some maintenance
procedures by yourself.
Please be aware that do-it-yourself
maintenance may affect warranty cov-
erage.

The use of Lexus repair manuals is recom-
mended.
For details about warranty coverage, refer
to the separate “Owner’s Guide”, “War-
ranty and Service Guide”, “Owner’s Man-
ual Supplement” or “Warranty Booklet”.

Do-it-yourself maintenance

General maintenance

WARNING

■

If the hybrid system is operating

Turn the hybrid system off and ensure

that there is adequate ventilation before

performing maintenance checks.

Engine compartment

Items

Check points

Brake fluid

Is the brake fluid at the
correct level? (



P.335)

Engine/powe
r control unit
coolant

Is the engine/power con-
trol unit coolant at the cor-
rect level? (



P.333)

Engine oil

Is the engine oil at the cor-
rect level? (



P.331)

Exhaust sys-
tem

There should not be any
fumes or strange sounds.

Radiator/con-
denser

The radiator and con-
denser should be free
from foreign objects.
(



P.334)

Washer fluid

Is there sufficient washer
fluid? (



P.335)

324

6-2. Maintenance

Luggage compartment

Items

Check points

12-volt battery

Check the connections.
(



P.336)

Vehicle interior

Items

Check points

Accelerator
pedal

• The accelerator pedal

should move smoothly
(without uneven pedal
effort or catching).

Brake pedal

• Does the brake pedal

move smoothly?

• Does the brake pedal

have appropriate clear-
ance from the floor?

• Does the brake pedal

have the correct
amount of free play?

Brakes

• The vehicle should not

pull to one side when
the brakes are applied.

• The brakes should work

effectively.

• The brake pedal should

not feel spongy.

• The brake pedal should

not get too close to the
floor when the brakes
are applied.

Head
restraints

• Do the head restraints

move smoothly and lock
securely?

Hybrid trans-
mission “Park”
mechanism

• When parked on a slope

and the shift lever is in P,
is the vehicle securely
stopped?

Indica-
tors/buzzers

• Do the indicators and

buzzers function prop-
erly?

Lights

• Do all the lights come

on?

• Are the headlights

aimed correctly?

Parking brake

• Does the parking brake

switch operate nor-
mally?

• When parked on a slope

and the parking brake is
on, is the vehicle
securely stopped?

Seat belts

• Do the seat belts oper-

ate smoothly?

• The seat belts should not

be damaged.

Seats

• Do the seat controls

operate properly?

Steering
wheel

• Does the steering wheel

rotate smoothly?

• Does the steering wheel

have the correct
amount of free play?

• There should not be any

strange sounds coming
from the steering wheel.

Vehicle exterior

Items

Check points

Doors

• Do the doors operate

smoothly?

Engine hood

• Does the engine hood

lock system work prop-
erly?

Items

Check points

325

6-2. Maintenance

ain

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The OBD system determines that a
problem exists somewhere in the emis-
sion control system. Your vehicle may
not pass the I/M test and may need to
be repaired. Contact your Lexus
dealer to service the vehicle.



When the 12-volt battery is discon-
nected or discharged
Readiness codes that are set during
ordinary driving are erased.
Also, depending on your driving
habits, the readiness codes may not
be completely set.



When the fuel tank cap is loose
The malfunction indicator lamp
comes on indicating a temporary
malfunction and your vehicle may
not pass the I/M test.

Fluid leaks

• There should not be any

signs of fluid leakage
after the vehicle has
been parked.

Tires

• Is the tire inflation pres-

sure correct?

• The tires should not be

damaged or exces-
sively worn.

• Have the tires been

rotated according to the
maintenance schedule?

• The wheel nuts should

not be loose.

Windshield
wipers/
rear window
wiper

• The wiper blades should

not show any signs of
cracking, splitting, wear,
contamination or defor-
mation.

• The wiper blades should

clear the wind-
shield/rear window
without streaking or
skipping.

Items

Check points

Emission inspection and
maintenance (I/M) pro-
grams

Some states have vehicle emission
inspection programs which include
OBD (On Board Diagnostics)
checks. The OBD system monitors
the operation of the emission con-
trol system.

If the malfunction indicator lamp
comes on

Your vehicle may not pass the
I/M test in the following situa-
tions:

327

6-3. Do-it-yourself maintenance

ain

ten

ce an

6-3.Do-it-yourself maintenance

Do-it-yourself service pre-
cautions

If you perform maintenance by
yourself, be sure to follow the cor-
rect procedure as given in these
sections.

Maintenance

Items

Parts and tools

12-volt bat-
tery condition
(



P.336)

• Grease
• Conventional wrench

(for terminal clamp
bolts)

Brake fluid
level
(



P.335)

• FMVSS No.116 DOT 3

or SAE J1703 brake
fluid
FMVSS No.116 DOT 4
or SAE J1704 brake
fluid

• Rag or paper towel
• Funnel (used only for

adding brake fluid)

Engine/powe
r control unit
coolant level
(



P.333)

• “Toyota Super Long Life

Coolant” or a similar
high quality ethylene
glycol-based non-sili-
cate, non-amine, non-
nitrite and non-borate
coolant with long-life
hybrid organic acid
technology
For the U.S.A.:
“Toyota Super Long Life
Coolant” is pre-mixed
with 50% coolant and
50% deionized water.
For Canada:
“Toyota Super Long Life
Coolant” is pre-mixed
with 55% coolant and
45% deionized water.

• Funnel (used only for

adding coolant)

Hybrid bat-
tery (traction
battery) air
intake vent
(



P.356)

• Vacuum cleaner, etc.
• Phillips screwdriver

Engine oil
level
(



P.331)

• “Toyota Genuine Motor

Oil” or equivalent

• Rag or paper towel
• Funnel (used only for

adding engine oil)

Fuses
(



P.361)

• Fuse with same amper-

age rating as original

Light bulbs
(



P.365)

• Bulb with same number

and wattage rating as
original

Headlight aim

• Phillips-head screw-

driver

Items

Parts and tools

328

6-3. Do-it-yourself maintenance

Radiator and
condenser
(



P.334)



Tire inflation
pressure
(



P.352)

• Tire pressure gauge
• Compressed air source

Washer fluid
(



P.335)

• Water or washer fluid

containing antifreeze
(for winter use)

• Funnel (used only for

adding water or washer
fluid)

WARNING

The engine compartment contains many

mechanisms and fluids that may move

suddenly, become hot, or become elec-

trically energized. To avoid death or seri-

ous injury, observe the following

precautions.

■

When working on the engine com-

partment

●

Make sure that “IGNITION ON” on

the multi-information display and the

“READY” indicator are both off.

●

Keep hands, clothing and tools away

from the moving fan and engine drive

belt.

●

Be careful not to touch the engine,

power control unit, radiator, exhaust

manifold, etc. right after driving as they

may be hot. Oil and other fluids may

also be hot.

●

Do not leave anything that may burn

easily, such as paper and rags, in the

engine compartment.

●

Do not smoke, cause sparks or expose

an open flame to fuel. Fuel fumes are

flammable.

Items

Parts and tools

■

When working near the electric cool-

ing fans or radiator grille

Be sure the power switch is OFF.

With power switch in ON, the electric

cooling fans may automatically start to

run if the air conditioning is on and/or the

coolant temperature is high. (



P.334)

■

Safety glasses

Wear safety glasses to prevent flying or

falling material, fluid spray, etc. from get-

ting in your eyes.

NOTICE

■

If you remove the air cleaner filter

Driving with the air cleaner filter

removed may cause excessive engine

wear due to dirt in the air.

329

6-3. Do-it-yourself maintenance

ain

ten

ce an

Pull the hood lock release lever.

The hood will pop up slightly.

Pull up the auxiliary catch lever and
lift the hood.

Hold the hood open by inserting
the supporting rod into the slot.

Hood

Opening the hood

WARNING

■

Pre-driving check

Check that the hood is fully closed and

locked.

If the hood is not locked properly, it may

open while the vehicle is in motion and

cause an accident, which may result in

death or serious injury.

■

After installing the support rod into

the slot

Make sure the rod is properly inserted

into the slot to prevent the hood from

shutting on your head or body.

NOTICE

■

When closing the hood

Be sure to return the support rod to its

clip before closing the hood.
Closing the hood without returning the

support rod properly may cause the

hood to be damaged.

Lexus UX250h (2023 year). Manual in english - page 19