Lexus NX450H+ (2022 year). Manual in english

Adding washer fluid

If washer fluid does not spray from any of the
washers or "Windshield Washer Fluid Low" is
displayed on the multi-information display, the
washer fluid bottle may be empty. Add washer
fluid.

WARNING

Do not add washer fluid when the hybrid system is hot or operating.
As washer fluid contains alcohol, it may catch fire if spilled on the engine, etc.

NOTICE

■

Do not use any fluid other than washer fluid

Do not use soapy water or engine antifreeze instead of washer fluid. Doing so may cause
streaking on the vehicle’s painted surfaces, as well as damaging the pump leading to
problems of the washer fluid not spraying.

■

Diluting washer fluid

Dilute washer fluid with water as necessary. Refer to the freezing temperatures listed on
the label of the washer fluid bottle.

8-4. Inspection of consumables

592

12-volt battery

12-volt battery location

WARNING

■

Chemicals in the 12-volt battery

The 12-volt battery contains poisonous and corrosive sulfuric acid and may produce
hydrogen gas which is flammable and explosive.
Observe the following precautions while working on or near the 12-volt battery:

●

Do not cause sparks by touching the 12-volt battery terminals with tools.

●

Do not smoke or light a match near the 12-volt battery.

●

Avoid contact with eyes, skin and clothes.

●

Never inhale or swallow electrolyte.

●

Wear protective safety glasses when working near the 12-volt battery.

●

Keep children away from the 12-volt battery.

■

Where to safely charge the 12-volt battery

Always charge the 12-volt battery in an open area. Do not charge the 12-volt battery in a
garage or closed room where there is insufficient ventilation.

■

Emergency measures regarding electrolyte

●

If electrolyte gets in your eyes, flush your eyes with clean water for at least 15 minutes
and get immediate medical attention. If possible, continue to apply water with a
sponge or cloth while traveling to the nearest medical facility.

●

If electrolyte gets on your skin, wash the affected area thoroughly. If you feel pain or
burning, get medical attention immediately.

●

If electrolyte gets on your clothes, it may soak through your clothing on to your skin.
Immediately take off the clothing and follow the procedure above if necessary.

●

If you accidentally swallow electrolyte, drink a large quantity of water or milk and get
emergency medical attention immediately.

■

When disconnecting the 12-volt battery

Never disconnect the negative (-) terminal. The disconnected body ground terminal may
touch the positive (+) terminal, which may cause a short, resulting in death or serious
injury.

8-4. Inspection of consumables

593

Maintenance and car

The 12-volt battery is located on the left side of
luggage compartment.

Removing the 12-volt battery cover

Open the deck board.

Remove the 12-volt battery cover.

Checking the 12-volt battery

■

12-volt battery exterior

Make sure that the 12-volt battery terminals are not corroded and that there are no
loose connections, cracks, or loose clamps.

Terminals

Hold-down clamp

Before recharging

When recharging, the 12-volt battery produces hydrogen gas which is flammable
and explosive. Therefore, observe the following precautions before recharging:

●

If recharging with the 12-volt battery installed on the vehicle, be sure to discon-
nect the ground cable.

●

Make sure the power switch on the charger is off when connecting and discon-
necting the charger cables to the 12-volt battery.

8-4. Inspection of consumables

594

NOTICE

When recharging the 12-volt battery, make sure that the hybrid system is operating and
all accessories are off.

After recharging or reconnecting the 12-volt battery

The hybrid system may not start. Follow the procedure below to initialize the
system.

Change the shift position to P.

Open and close any of the doors.

Restart the hybrid system.

INFORMATION

●

Unlocking the doors using the smart access system with push-button start may not
be possible immediately after reconnecting the 12-volt battery. If this happens, use
the wireless remote control or the mechanical key to lock/unlock the doors.

●

Start the hybrid system with the power switch in ACC. The hybrid system may not
start with the power switch turned off. However, the hybrid system will operate
normally from the second attempt.

●

The power switch mode is recorded by the vehicle. If the 12-volt battery is
disconnected and reconnected, the vehicle will return the power switch to the
mode it was in before the 12-volt battery was disconnected. Make sure to turn the
power switch off before disconnecting the 12-volt battery. Take extra care when
connecting the 12-volt battery if the power switch mode prior to the 12-volt battery
being disconnected is unknown.
If the hybrid system does not start even after multiple attempts at all methods
above, contact your Lexus dealer.

8-4. Inspection of consumables

595

Maintenance and car

Air conditioning filter maintenance

The air conditioning filter must be changed regularly to maintain air conditioning
efficiency.

Checking interval

Inspect and replace the air conditioning filter according to the maintenance sched-
ule. In dusty areas or areas with heavy traffic flow, early replacement may be
required.

●

If air fresheners, etc. are used inside the vehicle, the service life of the deo-
dorizing function of the air conditioning filter with deodorizing function may
be reduced significantly. If odors from the air conditioning system become a
concern, replace the filter.

Replacing the air conditioning filter

NOTICE

Observe the following precautions when using the air conditioning system.
Make sure that a filter is always installed. Using the air conditioning system without a filter
may cause damage to the system.

Turn the power switch off.

Open the glove box and disconnect the
damper stay from the pin.

8-4. Inspection of consumables

596

Push both the sides of the glove box inward
and disengage each claw on the upper side.
Then, pull the glove box to disengage the
claws on the lower side and remove the glove
box.

Unlock the filter cover ( ), pull the filter
cover out of the claws ( ), and remove the
filter cover.

Remove the filter case.

Remove the air conditioning filter from the
filter case and replace it with a new one.

The [

UP] marks shown on the filter should be

pointing up.

8-4. Inspection of consumables

597

Maintenance and car

Tire maintenance

Replace or rotate tires in accordance with maintenance schedules and treadwear.

NOTICE

Take particular care when driving on uneven rough roads with cracks and potholes.
These conditions may cause loss of tire inflation pressure, reducing the cushioning ability
of the tires. Driving on rough roads may also cause damage to the tires themselves, as
well as the vehicle’s wheels and body.

8-5. Tire maintenance

598

Tire inspection items

WARNING

■

When inspecting or replacing the tires

Observe the following precautions.
Failure to do so may lead to damage to the drivetrain or unstable handling.

●

Do not mix tires of different makes, models or tread patterns. Also, do not mix tires of
remarkably different treadwear.

●

Do not use tire sizes other than those recommended by Lexus.

●

Do not mix differently constructed tires (radial, bias-belted or bias-ply tires).

●

Do not mix summer, all season and snow tires.

●

Do not use tires that have been used on another vehicle.
Do not use tires if you do not know how they were used previously.

NOTICE

If tire inflation pressure becomes low while driving, do not continue driving. Otherwise
the tire or wheel may be damaged.

Check if the treadwear indicators are showing on the tires. Also check the tires for
uneven wear, such as excessive wear on one side of the tread.
Check the spare tire condition and pressure if not rotated.

New tread

Worn tread

Treadwear indicator
The location of treadwear indicators is
shown by a [TWI] or

mark, etc., molded

into the sidewall of each tire.
Replace the tires if the treadwear indicators
are showing on a tire.

INFORMATION

8-5. Tire maintenance

599

Maintenance and car

■

When to replace your vehicle’s tires

Tires should be replaced if:

●

The treadwear indicators are showing on a tire.

●

You have tire damage such as cuts, splits, cracks deep enough to expose the fabric,
and bulges indicating internal damage.

●

A tire goes flat repeatedly or cannot be properly repaired due to the size or location of
a cut or other damage.
If you are not sure, consult with your Lexus dealer.

■

Tire life

Any tire over 6 years old must be checked by a qualified technician even if it has seldom
or never been used or damage is not obvious.

■

Maximum load of tire

Check that the maximum load of the replacement
tire is greater than 1/2 of the Gross Axle Weight
Ratings (GAWR) of either the front axle or the rear
axle, whichever is greater.
For the GAWR, see the Certification Label.
For the maximum load of the tire, see the load limit
at maximum cold tire inflation pressure mentioned on
the sidewall of the tire.

■

Tire types

●

Summer tires
Summer tires are high-speed performance tires best suited to highway driving under
dry conditions. Since summer tires do not have the same traction performance as
snow tires, summer tires are inadequate for driving on snow-covered or icy roads. For
driving on snow-covered roads or icy roads, the use of snow tires is recommended.
When installing snow tires, be sure to replace all four tires.

●

All season tires
All season tires are designed to provide better traction in snow and to be adequate
for driving in most winter conditions as well as for use year-round. All season tires,
however, do not have adequate traction performance compared with snow tires in
heavy or loose snow. Also, all season tires fall short in acceleration and handling
performance compared with summer tires in highway driving.

●

Snow tires
For driving on snow-covered roads or icy roads, we recommend using snow tires. If
you need snow tires, select tires of the same size, construction and load capacity as the
originally installed tires. Since your vehicle has radial tires as original equipment, make

8-5. Tire maintenance

600

sure your snow tires also have radial construction. Do not install studded tires without
first checking local regulations for possible restrictions.
Snow tires should be installed on all wheels.

■

If the tread on snow tires wears down below 0.16 in. (4 mm)

The effectiveness of the tires as snow tires is lost.

8-5. Tire maintenance

601

Maintenance and car

Run-flat tire features

When run-flat tires are installed, the vehicle can be driven for a maximum of
50 miles (80 km) at a speed below 50 mph (80 km/h) after any tire goes
flat. (However, the vehicle speed may not increase to near 50 mph [80 km/h]
depending on weather or driving conditions.)
Make sure to replace the flat tire before the vehicle has been driven for near 50
miles (80 km). Also, do not use a repaired tire.

A run-flat tire has a

mark on the side wall.

INFORMATION

■

Precautions for run-flat tires

●

The run-flat tires are for only this vehicle. Do not use the tires on other vehicles.

●

Do not mix run-flat tires and normal tires.

●

If non-genuine Lexus wheels are used, it may be impossible to sufficiently demonstrate
the performance of run-flat tires.

8-5. Tire maintenance

602

Operation of the tire pressure warning system

Your vehicle is equipped with a tire pressure warning system that uses tire pressure
warning valves and transmitters to detect low tire inflation pressure before serious
problems arise.
The tire pressure warning system of this vehicle adopts a 2-type warning system.

●

When "Adjust Pressure" is displayed (Normal Warning)
A warning with the tire pressure warning light and warning buzzer when there
is an unknown level of low tire pressure with the appearance of the tire due
to natural air leakage as well as the pressure lowering due to changes in the
pressure according to the outside temperature.

●

When "Immediately Check tire when Safe" is displayed (Emergency Warning)
A warning with the tire pressure warning light and warning buzzer when there is
a known level of low tire pressure with the appearance of the tire due to pressure
suddenly lowering.
However, the system may not be able to detect sudden tire ruptures (bursting,
etc.).

●

The tire pressure detected by the tire pressure warning system can be displayed
on the center display.

INFORMATION

■

Routine tire inflation pressure checks

The tire pressure warning system does not replace routine tire inflation pressure checks.
Make sure to check tire inflation pressure as part of your routine of daily vehicle checks.

■

Tire inflation pressure

●

It may take a few minutes to display the tire inflation pressure after the power switch is
turned to ON.
It may also take a few minutes to display the tire inflation pressure after inflation
pressure has been adjusted.

●

Tire inflation pressure changes with temperature. The displayed values may also be
different from the values measured using a tire pressure gauge.

■

Situations in which the tire pressure warning system may not operate properly

●

In the following cases, the tire pressure warning system may not operate properly.

•

If non-genuine Lexus wheels are used.

•

A tire has been replaced with a tire that is not an OE (Original Equipment) tire.

•

A tire has been replaced with a tire that is not of the specified size.

8-5. Tire maintenance

603

Maintenance and car

•

Tire chains, etc. are equipped.

•

If a window tint that affects the radio wave signals is installed.

•

If there is a lot of snow or ice on the vehicle, particularly around the wheels or wheel
housings

•

If the tire inflation pressure is extremely higher than the specified level.

•

If tires not equipped with tire pressure warning valves and transmitters are used.

•

If the ID code on the tire pressure warning valves and transmitters is not registered
in the tire pressure warning computer.

●

Performance may be affected in the following situations.

•

Near a TV tower, electric power plant, gas station, radio station, large display,
airport or other facility that generates strong radio waves or electrical noise.

•

When carrying a portable radio, cellular phone, cordless phone or other wireless
communication device.

If tire position information is not correctly displayed due to the radio wave conditions,
the display may be corrected by changing the location of the vehicle as the radio wave
conditions may change.

●

When the vehicle is parked, the time taken for the warning to start or go off could be
extended.

●

When tire inflation pressure declines rapidly for example when a tire has burst, the not
to able detect.

Installing tire pressure warning valves and transmitters

NOTICE

■

Repairing or replacing tires, wheels, tire pressure warning valves, transmitters and
tire valve caps

●

When removing or fitting the wheels, tires or the tire pressure warning valves and
transmitters, contact your Lexus dealer as the tire pressure warning valves and trans-
mitters may be damaged if not handled correctly.

●

Make sure to install the tire valve caps. If the tire valve caps are not installed, water
could enter the tire pressure warning valves, corrode the valve, and cause sticking and
air leaks.

●

When replacing tire valve caps, do not use tire valve caps other than those specified.
The cap may become stuck.

8-5. Tire maintenance

604

When replacing tires or wheels, tire pressure warning valves and transmitters must
also be installed.
When new tire pressure warning valves and transmitters are installed, new ID
codes must be registered in the tire pressure warning computer

INFORMATION

■

When replacing the tires and wheels

If the ID code of the tire pressure warning valve and transmitter is not registered, the tire
pressure warning system will not work properly.
In this case, after driving for about 20 minutes, the tire pressure warning light blinks for 1
minute and stays on to indicate a system malfunction.

Registration of the position of each wheel after performing a tire rota-
tion

It is necessary to register the position of each wheel after performing a tire
rotation.
Wheel position registration can be performed by oneself. Wheel position registra-
tion is performed by driving forward with moderate left and right turns. However,
depending on the driving conditions and driving environment, registration may
take some time to complete.

Park the vehicle in a safe place, turn the power switch off and wait 15 minutes or
more.

Start the hybrid system.

The wheel position registration procedure cannot be performed while the vehicle is
moving.

Select

on the center display.

Select [Vehicle customize].

Select [Tire pressure].

Select [Tire rotation].

Select [Continue].

A message indicating that wheel position registration is being performed will be
displayed on the multi-information display. "---" will be displayed for the tire inflation
pressure of each tire and wheel position registration will begin.

Drive straight (with occasional left and right turns) at approximately 25 mph
(40 km/h) or more for approximately 10 to 30 minutes.

8-5. Tire maintenance

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Maintenance and car

When wheel position registration is complete, a message indicating that registration
has been completed and the inflation pressure of each tire will be displayed on the
multi-information display.
Even if it is not possible to drive continuously at approximately 40 km/h (25 mph) or
more, registration can be completed by driving for a long time. However, if registration
does not complete after driving for 1 hour or more, park the vehicle in a safe place and
leave it with the power switch in ON for approximately 15 minutes or more, and then
perform the driving procedure again.
Even if it is not possible to drive continuously at approximately 25 mph (40 km/h) or
more, registration can be completed by driving for a long time. However, if registration
does not complete after driving for 1 hour or more, park the vehicle in a safe place and
leave it with the power switch in ON for approximately 15 minutes or more, and then
perform the driving procedure again.

INFORMATION

■

When performing wheel position registration

●

Normally, wheel position registration can be completed within approximately 30
minutes.

●

Wheel position registration is performed while driving at a vehicle speed of
approximately 25 mph (40 km/h) or more.

■

Wheel position registration procedure

●

If the power switch is turned off while registering the wheel position, the next time
the power switch is turned to ON, the wheel position registration will resume and
it will not be necessary to restart the procedure.

●

While the position of each wheel is being determined and the inflation pressures
are not being displayed, if the inflation pressure of a tire drops, the tire pressure
warning light will come on.

■

If the wheel position cannot be registered easily

●

In the following situations, wheel position registration may take longer than usual
to be completed or may not be possible.

•

Vehicle is not driven at approximately 25 mph (40 km/h) or more

•

Vehicle is driven on unpaved roads

•

If wheel position registration does not complete after driving for 1 hour or more,
park the vehicle in a safe place for approximately 15 minutes and then drive the
vehicle again.

●

If the vehicle is reversed during wheel position registration, all data collected until
then will be cleared. Perform driving again.

8-5. Tire maintenance

606

Setting the tire pressure

In the following situations, it will be necessary to perform the tire inflation pressure
setting procedure of the tire pressure warning system.

●

When the specified tire inflation pressure has changed, such as due to carried
load, etc.

●

When the tire inflation pressure is changed such as when the tire size is
changed.

If the tire inflation pressure has been adjusted to the specified level, perform the tire
inflation setting procedure by selecting specified inflation pressure on the center
display.
When the tire inflation pressure is to be other than specified, such as when tires
other than the specified size are used, etc., set the tire inflation pressure using
the current pressure. Make sure to adjust the tire inflation pressure of each tire
to the appropriate level before performing tire pressure setting. The tire pressure
warning system operates based on this tire inflation pressure.

Lexus NX450H+ (2022 year). Manual in english - page 36