Lexus NX300h (2021 year). Manual in english - page 20

P.205)

■

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.

337

6-1. Maintenance and care

Mai
nte

e a

are

Clean the air intake vents by the follow-
ing procedures to prevent dust from
accumulating in them, or to prevent
them from clogging.

There are air intake vents on the both sides
of the seats.

■

Cleaning the air intake vents

Remove the dust from the vents
with a vacuum cleaner etc.

Clean the vents of the both sides.

Start the hybrid system and check
that the warning message on the

multi-information display disap-
pears.

It may take about 20 minutes before the

warning message disappears.

■

Cleaning the air intake vents

●

Dust on the air intake vents may inter-

feres cooling of the hybrid battery (trac-

tion battery) and results in poor fuel

consumption. Clean the air intake vents

periodically.

●

If continuing to drive the vehicle with

“Maintenance required for Traction bat-

tery cooling parts See owner’s manual”

shown on the multi-information display,

the hybrid battery (traction battery) input

and output may be restricted, leading to a

reduction in hybrid battery (traction bat-

tery) output and a malfunction. It may

cause poor fuel consumption or a mal-

function. If the warning message is shown,

contact your Lexus dealer or clean the air

intake vents immediately.

●

If the warning message on the multi-infor-

mation display does not disappear after

cleaning the air intake vents, have the

vehicle inspected by your Lexus dealer.

●

Timing of cleaning air intake vents differs

depending on the use environment of the

vehicle.

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 air intake vents

338

6-1. Maintenance and care



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 difficult to

clean.



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

■

When cleaning the air intake vents

When cleaning the air intake vent, make

sure to only use a vacuum to suck out

dust and clogs. If a compressed air blow

gun, etc. is used to blow out dust and

clogs, the dust or clogs may be pushed

into the air intake vent, which may affect

the performance of the hybrid battery

(traction battery) and cause a malfunc-

tion.

■

To prevent damage to the vehicle

Observe the following precautions. Fail-

ure to do so may cause damage to the

vehicle.

●

Do not use water or other liquid to

clean the air intake vents

●

Do not install anything but the filters

exclusive for this vehicle to the air

intake vents or use the vehicle without

installing the filters.

Cleaning the areas with satin-fin-
ish metal accents

Cleaning the leather areas

Cleaning the synthetic leather
areas

339

6-2. Maintenance

Mai
nte

e a

are

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 (Except for Can-

ada)

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:

Press

of the meter control

switches and select

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.354)

General maintenance

Scheduled maintenance

340

6-2. Maintenance

Press

of the meter control

switches, select the “Vehicle Settings”
and then press

Press

of the meter control

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

Select the “Yes” and push

“The Data Has Been Reset” is displayed
on the multi-information display.

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/power
control unit
coolant

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



P.351)

Engine oil

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



P.349)

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. (



Washer fluid

Is there sufficient washer
fluid? (

341

6-2. Maintenance

Mai
nte

e a

are

Luggage compartment

Items

Check points

12-volt battery

Check the connections.
(

P.354)

Vehicle interior

Items

Check points

Accelerator
pedal

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

Hybrid trans-
mission “Park”
mechanism

When parked on a slope
and the shift lever is in P, is
the vehicle securely
stopped?

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?

Indica-
tors/buzzers

Do the indicators and
buzzers function properly?

Lights

Do all the lights come on?

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 oper-
ate 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 properly?

Fluid leaks

There should not be any
signs of fluid leakage after
the vehicle has been
parked.

Items

Check points

342

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
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.

Tires

• Is the tire inflation pres-

sure correct?

• The tires should not be

damaged or excessively
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:

343

6-2. Maintenance

Mai
nte

e a

are

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.

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

If your vehicle does not pass the
I/M test

344

6-3. Do-it-yourself maintenance

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.354)

• Grease
• Conventional wrench

(for terminal clamp
bolts)

Brake fluid
level
(



• FMVSS No.116 DOT 3

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

• Rag or paper towel
• Funnel (used only for

adding brake fluid)

Engine/power
control unit
coolant level
(

P.351)

• “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)

Engine oil
level
(

P.349)

• “Toyota Genuine Motor

Oil” or equivalent

• Rag or paper towel
• Funnel (used only for

adding engine oil)

Fuses
(

P.371)

Fuse with same amperage
rating as original

Light bulbs
(

P.375)

Bulb with same number
and wattage rating as orig-
inal

Headlight aim Phillips-head screw-driver

Radiator and
condenser
(

—

Items

Parts and tools

345

6-3. Do-it-yourself maintenance

Mai
nte

e a

are

Tire inflation
pressure
(



P.365)

• Tire pressure gauge
• Compressed air source

Washer fluid
(



• 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 the “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 mode, the

electric cooling fans 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.

346

6-3. Do-it-yourself maintenance

Pull the hood lock release lever.

The hood will pop up slightly.

Pull up the auxiliary catch lever and
lift the hood.

■

Front

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.

Positioning a floor jack

When using a floor jack, follow the
instructions in the manual provided
with the jack and perform the oper-
ation safely.
When raising your vehicle with a
floor jack, position the jack cor-
rectly.
Improper placement may damage
your vehicle or cause injury.

Location of the jack point

347

6-3. Do-it-yourself maintenance

Mai
nte

e a

are

■

Rear

Remove the bolt and then
remove the cover .

Raise your vehicle with a floor jack.

348

6-3. Do-it-yourself maintenance

Fuse box (



P.371)

Engine coolant reservoir (



P.351)

Engine oil filler cap (



P.350)

Power control unit coolant reservoir (



Brake fluid reservoir (



Radiator (



Condenser (



Electric cooling fans

Engine oil level dipstick (

P.349)

Washer fluid tank (



■

12-volt battery

P.354

Engine compartment

Components

A
B
C
D

E
F

349

6-3. Do-it-yourself maintenance

Mai
nte

e a

are

■

Removing the engine compart-
ment cover

■

Installing the clips

Insert

Press

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

■

Checking the engine oil

Park the vehicle on level ground.
After warming up the hybrid sys-
tem, and turning off the engine, wait
more than 5 minutes for the oil to
drain back into the bottom of the
engine.

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

Wipe the dipstick clean.

Reinsert the dipstick fully with its
protruding areas ( in the illustra-
tion) pointing towards engine.

Engine compartment cover

NOTICE

■

After installing an engine compart-

ment cover

Make sure that the cover is securely

installed in its original position.

Checking and adding the engine
oil

350

6-3. Do-it-yourself maintenance

Holding a rag under the end, pull
the dipstick out and check the oil
level.

Low

Normal

Excessive

Measuring side

Wipe the dipstick and reinsert it
fully.

■

Checking the oil type and prepar-
ing the items needed

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



Engine oil selection

P.426



Oil quantity (Low Full)

1.6 qt. (1.5 L, 1.3 Imp.qt.)



Items

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.

Remove the oil filler cap by turning
it counterclockwise.

Add engine oil slowly, checking the
dipstick.

Install the oil filler cap by turning it
clockwise.

■

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

■

After changing the engine oil

The engine oil maintenance data should be

reset. Perform the following procedures:

Press

of the meter control

switches and select

A
B
C
D

351

6-3. Do-it-yourself maintenance

Mai
nte

e a

are

Press

of the meter control

switches, select the “Vehicle Settings”
and then press

Press

of the meter control

switches, select the “Oil Maintenance”
and then press and hold

Select the “Yes” and push

“The Data Has Been Reset” is displayed
on the multi-information display.

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

■

Engine coolant reservoir

Reservoir cap

“FULL” line

“LOW” line

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