Lexus RX500h (2024 year). Manual in english - page 14

P.245)

457

6-1. Maintenance and care

Mai
nte

e a

are



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.

■

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.



Remove dirt and dust using a vac-
uum cleaner.



Wipe it off with a soft cloth damp-
ened with neutral detergent diluted
to approximately 1%.



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

NOTICE

■

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.

Cleaning the leather areas

Cleaning the synthetic leather
areas

458

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 vehicle 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 pre-

formed according to the maintenance

schedule, please reset the message.

To reset the message, follow the procedures

described below:

Select

on the center display.

Select “Vehicle customize”.

Select “Utility”.

Select “Scheduled maintenance”.

Select “Reset”.

“The data has been reset” will be displayed

Maintenance requirements

To ensure safe and economical driv-
ing, day-to-day care and regular
maintenance are essential. It is the
owner’s responsibility to perform
regular checks. Lexus recommends
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 death or serious injury.

■

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.475)

General maintenance

Scheduled maintenance

459

6-2. Maintenance

Mai
nte

e a

are

on the center display when the reset proce-

dure 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

Listed below are the general main-
tenance items that should be per-
formed at the intervals specified in
the “Warranty and Service Guide”
or “Owner’s Manual Supplement”.
It is recommended that any prob-
lem you notice should be brought to
the attention of your Lexus dealer
or qualified service shop for advice.

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?
(

Engine/inter-
cooler/power
control unit cool-
ant

Is the engine/inter-
cooler/power control
unit coolant at the cor-
rect level? (



Engine oil

Is the engine oil at the
correct level?
(

Exhaust system

There should not be
any fumes or strange
sounds.

460

6-2. Maintenance

Radiator, con-
denser and inter-
cooler radiator

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



Washer fluid

Is there sufficient
washer fluid?
(



Luggage compartment

Items

Check points

12-volt battery

Check the connec-
tions. (



P.475)

Vehicle interior

Items

Check points

Accelerator
pedal

• The accelerator

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

Hybrid transmis-
sion “Park” mech-
anism

• When parked on a

slope and the shift
position is in P, is the
vehicle securely
stopped?

Brake pedal

• Does the brake

pedal move
smoothly?

• Does the brake

pedal have appro-
priate clearance
from the floor?

• Does the brake

pedal have the cor-
rect amount of free
play?

Items

Check points

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?

Indicators/buzz-
ers

• Do the indicators

and buzzers function
properly?

Lights

• Do all the lights

come on?

• Are the headlights

aimed correctly?
(

P.499)

Parking brake

• Does the parking

brake switch oper-
ate normally?

• When parked on a

slope and the park-
ing brake is on, is the
vehicle securely
stopped?

Seat belts

• Do the seat belts

operate smoothly?

• The seat belts should

not be damaged.

Items

Check points

461

6-2. Maintenance

Mai
nte

e a

are

Seats

• Do the seat controls

operate properly?

Steering wheel

• Does the steering

wheel rotate
smoothly?

• Does the steering

wheel have the cor-
rect 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 oper-

ate smoothly?

Engine hood

• Does the engine

hood lock system
work properly?

Fluid leaks

• There should not be

any signs of fluid
leakage after the
vehicle has been
parked.

Items

Check points

Tires

• Is the tire inflation

pressure correct?

• The tires should not

be damaged or
excessively worn.

• Have the tires been

rotated according to
the maintenance
schedule?

• The wheel bolts

should not be loose.

Windshield wip-
ers/rear window
wiper

• The wiper blades

should not show any
signs of cracking,
splitting, wear, con-
tamination or defor-
mation.

• The wiper blades

should clear the
windshield/rear win-
dow without streak-
ing or skipping.

Items

Check points

462

6-2. Maintenance

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 ordi-
nary 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.

The error code in the OBD system will
not be cleared unless the vehicle is
driven 40 or more times.

Contact your Lexus dealer to prepare
the vehicle for re-testing.

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:

When the malfunction indicator
lamp still remains on after sev-
eral driving trips

If your vehicle does not pass the
I/M test

463

6-3. Do-it-yourself maintenance

Mai
nte

e a

are

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 battery
condition
(



P.475)

• Grease
• Conventional

wrench (for terminal
clamp bolts)

Brake fluid level
(



• 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/inter-
cooler/power
control coolant
level (



• “Toyota Super Long

Life Coolant” or a
similar high quality
ethylene gly-
col-based non-sili-
cate, non-amine,
non-nitrite and
non-borate coolant
with long-life hybrid
organic acid tech-
nology
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)

Engine oil level
(

• “Toyota Genuine

Motor Oil” or equiv-
alent

• Rag or paper towel
• Funnel (used only for

adding engine oil)

Fuses (



P.497)

• Fuse with same

amperage rating as
original

Headlight aim
(

P.499)

• Phillips-head screw-

driver

Light bulbs
(

P.500)

• Bulb with same num-

ber and wattage rat-
ing as original

Items

Parts and tools

464

6-3. Do-it-yourself maintenance

Radiator, con-
denser and inter-
cooler radiator
(





Tire inflation pres-
sure (



P.487)

• Tire pressure gauge
• Compressed air

source

Washer fluid
(



• Water or washer

fluid containing anti-
freeze (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 the “ACCESSORY” or

“IGNITION ON” on the multi-infor-

mation display and the “READY” indi-

cator are both off.

●

Keep hands, clothing and tools away

from the moving fan.

●

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.

Items

Parts and tools

■

When working near the electric cool-

ing fan or radiator grille

Be sure the power switch is off.

With the power switch in ON, the elec-

tric cooling fan may automatically start to

run if the air conditioning is on and/or the

coolant temperature is high. (



■

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.

465

6-3. Do-it-yourself maintenance

Mai
nte

e a

are

Pull the hood lock release lever.

The hood will pop up slightly.

Pull up the auxiliary catch lever and
lift the hood.

■

Closing the hood

When closing the hood, make sure to

release it from a slightly high position

(approximately 7.9 in. [20 cm]) to close it.
If the hood is pushed by hand to close it, it

may not lock on both sides.

Hood

Opening the hood

WARNING

■

When the hood is open (RX500h)

Even if the power switch is turned off, the

cooling fan may continue to operate for a

short time. When the cooling fan is rotat-

ing, do not touch or approach the inside

of the engine compartment.

■

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.

467

6-3. Do-it-yourself maintenance

Mai
nte

e a

are



RX500h

Fuse boxes (

P.497)

Engine oil filler cap (



P.470)

Brake fluid reservoir (



Washer fluid tank (



Radiator (



Electric cooling fan
Condenser (



Engine oil level dipstick (

Intercooler radiator (



Intercooler/Power control unit coolant reservoir (

Engine coolant reservoir (



Engine compartment

Components

A
B
C
D

E
F

468

6-3. Do-it-yourself maintenance



RX350h

Fuse boxes (

P.497)

Engine oil filler cap (



P.470)

Engine oil level dipstick (

Brake fluid reservoir (



Washer fluid tank (



Radiator (



Electric cooling fan
Condenser (



Power control unit coolant reservoir (



Engine coolant reservoir (



■

12-volt battery

P.475

With the engine at operating tempera-
ture and turned off, check the oil level
on the dipstick.

Park the vehicle on level ground.
After warming up the engine and
turning off the hybrid system, wait
about 5 minutes for the oil to drain
back into the bottom of the engine.

Holding a rag under the end, pull
the dipstick out.

A
B
C
D

E
F

Checking the engine oil

469

6-3. Do-it-yourself maintenance

Mai
nte

e a

are



RX500h



RX350h

Wipe the dipstick clean.

Reinsert the dipstick fully.

Holding a rag under the end, pull
the dipstick out and check whether
the oil level is above low level mark.

Low level mark

The shape of the dipstick may differ

depending on the type of vehicle or

engine.

Wipe the dipstick and reinsert it
fully.

■

Engine oil consumption

A certain amount of engine oil will be con-

sumed while driving. In the following situa-

tions, oil consumption may increase, and

engine oil may need to be refilled in

between oil maintenance intervals.

●

When the engine is new, for example

directly after purchasing the vehicle or

after replacing the engine

●

If low quality oil or oil of an inappropriate

viscosity is used

●

When driving at high engine speeds or
with a heavy load, when towing

, or when

driving while accelerating or decelerat-

ing frequently

●

When leaving the engine idling for a long

time, or when driving frequently through

heavy traffic

: Vehicles with towing package

■

Engine oil level rise

If the vehicle is repeatedly driven without

the engine warmed up, moisture caused by

dew condensation inside the engine or fuel

which did not burn mixes into the engine oil,

resulting in a rise in engine oil level. How-

ever, this is not a malfunction.
For example, the engine become difficult to

be warmed up in the following situations.

●

When driving a short distance

●

When driving at a low speed

●

When the outside temperature is low

When checking the engine oil, make sure

that the engine is warmed up. If the engine

oil level exceeds the refill upper limit mark,

contact your Lexus dealer.

NOTICE

■

To prevent serious engine damage

Check the oil level on a regular basis.

470

6-3. Do-it-yourself maintenance

■

Checking the oil type and prepar-
ing the item needed

Make sure to check the oil type and
prepare the items needed before add-
ing oil.



Engine oil selection



P.566



Oil quantity (Low level mark



Refill upper limit mark)
1.6 qt. (1.5 L, 1.3 Imp. qt.)



Item
Clean funnel

■

Adding engine oil

If the oil level is below or near the low
level mark, add engine oil of the same
type as that already in the engine.



RX500h



RX350h

Remove the oil filler cap by turning
it counterclockwise.

Add engine oil slowly, checking the
dipstick.

Make sure that the oil level does not

exceed the refill upper limit mark and is

between the low level mark and refill upper

limit mark.

Low level mark
Refill upper limit mark

The shape of the dipstick may differ
depending on the type of vehicle or
engine.

Install the oil filler cap by turning it
clockwise.

■

After changing the engine oil

After the engine oil has been replaced, the

engine oil maintenance data should be

reset. Perform the following procedures:

Select

on the center display.

Select “Vehicle customize”.

Select “Utility”.

Select “Oil maintenance”.

Select “Reset”.

“The data has been reset” will be displayed

on the center display when the reset proce-

dure has been completed.

Adding engine oil

A
B

471

6-3. Do-it-yourself maintenance

Mai
nte

e a

are

■

Engine coolant reservoir

The coolant level is satisfactory if it is

between the “FULL” and “LOW” lines
on the reservoir when the hybrid sys-
tem is cold.



RX500h

Reservoir cap
“FULL” line
“LOW” line

If the level is on or below the “LOW” line,
add coolant up to the “FULL” line.
(



RX350h

Reservoir cap
“FULL” line
“LOW” line

If the level is on or below the “LOW” line,
add coolant up to the “FULL” line.
(

■

Intercooler/Power control unit
coolant reservoir (RX500h)

The coolant level is satisfactory if it is

WARNING

■

Used engine oil

●

Used engine oil contains potentially

harmful contaminants which may

cause skin disorders such as inflamma-

tion and skin cancer, so care should be

taken to avoid prolonged and

repeated contact. To remove used

engine oil from your skin, wash thor-

oughly with soap and water.

●

Dispose of used oil and filters only in a

safe and acceptable manner. Do not

dispose of used oil and filters in house-

hold trash, in sewers or onto the

ground.

Call your Lexus dealer, service station

or auto parts store for information

concerning recycling or disposal.

●

Do not leave used engine oil within the

reach of children.

NOTICE

■

When replacing the engine oil

●

Be careful not to spill engine oil on the

vehicle components.

●

Avoid overfilling, or the engine could

be damaged.

●

Check the oil level on the dipstick

every time you refill the vehicle.

●

Be sure the engine oil filler cap is prop-

erly tightened.

■

If oil is spilled on the engine cover

To prevent the engine cover from being

damaged, remove any engine oil from

the engine cover as soon as possible

using a neutral detergent. Do not use an

organic solvent such as brake cleaner.

Checking the coolant

A
B
C

472

6-3. Do-it-yourself maintenance

between the “MAX” and “MIN” lines
on the reservoir when the engine is
cold.

Reservoir cap
“MAX” line
“MIN” line

If the level is on or below the “MIN” line,
add coolant up to the “MAX” line.
(



■

Power control unit coolant reser-
voir (RX350h)

The coolant level is satisfactory if it is
between the “FULL” and “LOW” lines
on the reservoir when the hybrid sys-
tem is cold.

Reservoir cap
“FULL” line
“LOW” line

If the level is on or below the “LOW” line,
add coolant up to the “FULL” line.
(

