Lexus NX350 (2022 year). Manual in english — page 32

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
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.

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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.

* :

If equipped

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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 engine 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.

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•

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.

Related Links

Tire pressure(P. 337)
Tire pressure warning light (warning buzzer)(P. 565)

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.

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NOTICE

■

To avoid damage to the tire pressure warning valves and transmitters

When a tire is repaired with liquid sealants, the tire pressure warning valve and transmit-
ter may not operate properly. If a liquid sealant is used, contact your Lexus dealer or
other qualified service shop as soon as possible. Make sure to replace the tire pressure
warning valve and transmitter when replacing the tire.

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.

1

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

2

Start the engine.

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

3

Select

on the center display.

4

Select [Vehicle customize].

5

Select [Tire pressure].

6

Select [Tire rotation].

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7

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.

8

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

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 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 engine 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 engine switch is turned off while registering the wheel position, the next time
the engine 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.

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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.

Related Links

Setting by selecting a specified tire inflation pressure(P. 537)
Setting using the current tire inflation pressure(P. 538)

Setting by selecting a specified tire inflation pressure

1

Start the engine.

The tire inflation pressure cannot be set while the vehicle is moving.

2

Select

on the center display.

3

Select [Vehicle customize].

4

Select [Tire pressure].

5

Select [Set indicated air pressure] and then select the desired front and rear
tire pressures.

6

Select [OK].

The tire pressure warning light will slowly blink 3
times.
After setting the tire inflation pressure, a message
indicating that setting has been completed will be
displayed on the multi-information display.

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INFORMATION

■

If the tire inflation pressure cannot be set easily

●

If the tire pressure warning light does not blink 3 times when starting the tire
inflation pressure setting procedure, the procedure may not have started. Perform
the procedure again from the beginning.

●

If tire inflation pressure setting procedure cannot be completed after performing
the above procedure, contact your Lexus dealer.

Setting using the current tire inflation pressure

WARNING

Make sure to adjust the tire inflation pressure of each tire to the appropriate level before
performing tire pressure setting. Otherwise, the tire pressure warning light may not
illuminate even if the tire inflation pressure drops or may illuminate even though the tire
inflation pressure is normal.

INFORMATION

■

Warning performance of the tire pressure warning system

●

When performing the tire pressure setting using the current tire inflation pressure,
the warning timing of the tire pressure warning system will vary according to the
conditions under which tire pressure setting was performed. Therefore, a warning may
be output even if the tire inflation pressure drops slightly or if the tire inflation pressure
increases above that when the tire inflation pressure was set.

●

Make sure to perform the tire pressure setting procedure after adjusting the tire
inflation pressure. Also, make sure the tires are cold before performing the tire
pressure setting procedure or adjusting the tire inflation pressure.

1

Adjust the tire inflation pressure of each tire to the appropriate level.

Make sure to adjust the tire inflation pressure with the tires cold.

2

Start the engine.

The tire inflation pressure cannot be set while the vehicle is moving.

3

Select

on the center display.

4

Select [Vehicle customize].

5

Select [Tire pressure].

6

Select [Set current air pressure].

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7

Select [Continue].

The tire pressure warning light will slowly blink 3
times and a message indicating that tire inflation
pressure is being set will be displayed on the mul-
ti-information display.
After setting the tire inflation pressure, a message
indicating that setting has been completed will be
displayed on the multi-information display.

INFORMATION

■

Tire inflation pressure setting procedure

●

If the engine switch is turned off while setting the tire inflation pressure, the next
time the engine switch is turned to ON, the setting procedure will resume and it
will not be necessary to restart the procedure.

●

If the tire inflation pressure setting procedure is started unnecessarily, adjust the
tire inflation pressure to the specified level with the tires cold and then perform
setting by selecting a specified tire inflation pressure, or perform the tire inflation
pressure setting procedure with the current tire inflation pressure.

■

If the tire inflation pressure cannot be set easily

●

Normally, the tire inflation pressure setting procedure can be completed in 2 or 3
minutes.

●

If the tire pressure warning light does not blink 3 times when starting the tire
inflation pressure setting procedure, the procedure may not have started. Perform
the procedure again from the beginning.

●

If tire inflation pressure setting procedure cannot be completed after performing
the above procedure, contact your Lexus dealer.

Registering ID codes

The tire pressure warning valve and transmitter is equipped with a unique ID code.
When new tire pressure warning valves and transmitters are installed, new ID
codes must be registered in the tire pressure warning computer.

INFORMATION

●

ID codes can be registered by yourself, but depending on the driving conditions and
driving environment, registration may take some time to complete.

●

When using a wheel set which all of the ID codes have already been registered, the
wheel set can be changed in a short amount of time.

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Before performing ID code registration, make sure that no wheels with tire pres-
sure warning valve and transmitters installed are near the vehicle.

1

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

2

Start the engine.

The ID code registration procedure cannot be performed while the vehicle is moving.

3

Select

on the center display.

4

Select [Vehicle customize].

5

Select [Tire pressure].

6

Check if the desired wheel set ([Set 1] or [Set
2]) is displayed.

ID codes will be registered to the displayed wheel
set.
To change the wheel set to be registered, select
the displayed set, and then select the wheel set
you wish to register.
If ID codes have already been registered for that
wheel set, the tire pressure warning light will slowly blink 3 times, and a message
indicating that change is occurring will be displayed on the multi-information display.

7

Select [New tire registration].

8

Select [Continue].

The tire pressure warning light will slowly blink 3
times and a message indicating that ID code reg-
istration is being performed will be displayed on
the multi-information display. Wheel set changing
will be canceled and registration will begin.
When registration is being performed, the tire
pressure warning light will blink for approximately
1 minute then illuminate and "---" will be displayed for the inflation pressure of each tire
on the multi-information display.

INFORMATION

If the tire pressure warning light does not blink 3 times when starting ID code
registration procedure, the procedure may not have started. Perform the procedure
again from the beginning.

9

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

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When registration is complete, the tire pressure warning light will turn off and a
message indicating that registration has been completed will be displayed on the
multi-information display.
Registration may take longer than normal to complete if the vehicle speed cannot be
maintained at approximately 25 mph (40 km/h) or more. If registration cannot be
completed after driving for 1 hour or more, perform the registration procedure again
from the beginning.

INFORMATION

■

When registering ID codes

●

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

●

ID code registration is performed while driving at a vehicle speed of approximate-
ly 25 mph (40 km/h) or more.

■

If ID codes are not registered easily

●

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

•

When the vehicle has not been parked for approximately 15 minutes or more
before being driven

•

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

•

Vehicle is driven on unpaved roads

•

Vehicle is driven near other vehicles and system cannot recognize tire pressure
warning valve and transmitters of your vehicle over those of other vehicles

•

Wheel with tire pressure warning valve and transmitter installed is inside or
near the vehicle

●

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

●

If registration does not complete after driving for 1 hour or more, perform the ID
code registration procedure again from the beginning.

●

If the ID codes cannot be registered even when performing the above procedure,
contact your Lexus dealer.

10

If the tire inflation pressure of the wheel set installed differs from that of the
previous set, it will be necessary to perform the tire inflation pressure setting
procedure of the tire pressure warning system.

If the specified tire inflation pressure is the same, it will not be necessary to perform the
tire inflation pressure setting procedure.

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Related Links

Setting the tire pressure(P. 537)

Canceling ID code registration

To cancel ID code registration after it has been started, select [New tire registra-
tion] again on the center display.

If ID code registration has been canceled, the tire pressure warning light will turn off.
If the warning light does not turn off, ID code registration may not have been cancelled
correctly. To cancel registration, select [New tire registration] again on the center display.

Selecting wheel set

Your vehicle is equipped with a tire pressure warning system with a function to
register two sets of ID codes. This allows for registration of a second wheel set, for
example a winter set.

●

The wheel set can be changed only if a second wheel set has been registered to
the system. If a second wheel set has not been registered, "Set 2(Unregistered)"
will be displayed and it will not be possible to change to the selected wheel set.
ID codes can be registered by yourself.

●

Only a change between both registered wheel set is possible, mixing between
these wheel sets is not supported.

●

While registering ID codes, it may not be possible to change between wheel
sets normally. Cancel registration before changing between wheel sets.

1

Install the desired wheel set.

2

Select

on the center display.

3

Select [Vehicle customize].

4

Select [Tire pressure].

5

Select the wheel set ([Set 1] or [Set 2]) displayed for the set selection setting.

6

Select the wheel set you wish to register, and then select [OK].

The tire pressure warning light will slowly blink 3 times, a message indicating that
change is occurring will be displayed, and the wheel set change will begin.
Wheel set change will begin and the tire pressure warning light will blink for 1 minute
and then illuminate. Also, while the change is being performed, "---" will be displayed
for the tire inflation pressure of each tire on the multi-information display.

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After approximately 2 minutes, the wheel set
change will complete, the tire pressure warning
light will turn off, and a completion message will
be displayed on the multi-information display.
If changing does not complete after approximate-
ly 4 minutes, a message indicating that the change
could not be completed will be displayed.
Check which wheel set is installed and perform
the change procedure again from the beginning.

7

If the specified tire inflation pressure of the wheel set installed differs from that
of the previous set, it will be necessary to perform the tire inflation pressure
setting procedure of the tire pressure warning system.

If the specified tire inflation pressure is the same, it will not be necessary to perform the
tire inflation pressure setting procedure.

8

Register the position of each wheel.

Related Links

Registration of the position of each wheel after performing a tire rotation(P. 535)

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Checking tire inflation pressure

You should check tire inflation pressure every two weeks, or at least once a
month.Do not forget to check the spare.

WARNING

In order to ensure the performance of the tires, maintain proper tire inflation pressure.
If the tires are not properly inflated, the following may occur:

●

Excessive wear

●

Uneven wear

●

Poor handling

●

Possibility of blowouts resulting from overheated tires

●

Air leaking from between tire and wheel

●

Wheel deformation and/or tire damage

●

Greater possibility of tire damage while driving (due to road hazards, expansion joints,
sharp edges in the road, etc.)

NOTICE

After inspecting and adjusting tire inflation pressure, make sure to install the tire valve
caps.
If a valve cap is not installed, dirt or moisture may get into the valve and cause an air leak,
resulting in decreased tire inflation pressure.

Driving with incorrect tire inflation pressure may result in the following:

●

Reduced fuel economy

●

Reduced driving comfort and poor handling

●

Reduced tire life due to wear

●

Reduced safety

●

Damage to the drive train

If a tire needs frequent inflating, have it checked by your Lexus dealer.

■

Instructions for checking tire inflation pressure

When checking tire inflation pressure, observe the following:

●

Check only when the tires are cold.
If your vehicle has been parked for at least 3 hours or has not been driven for
more than 1 mile or 1.5 km, you will get an accurate cold tire inflation pressure
reading.

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●

Always use a tire pressure gauge.
It is difficult to judge if a tire is properly inflated based only on its appearance.

●

It is normal for the tire inflation pressure to be higher after driving as heat is
generated in the tire. Do not reduce tire inflation pressure after driving.

●

Never exceed the vehicle capacity weight.
Passengers and luggage weight should be placed so that the vehicle is balanced.

Checking the specified tire inflation pressure

The recommended cold tire inflation pressure
and tire size are displayed on the tire and loading
information label.

Tire inflation pressure inspection and adjustment procedure

A

Tire valve

B

Tire pressure gauge

1

Remove the tire valve cap.

2

Press the tip of the tire pressure gauge onto
the tire valve.

3

Read the pressure using the gauge gradations.

4

If the tire inflation pressure is not at the recom-
mended level, adjust the pressure.

If you add too much air, press the center of the
valve to deflate.

5

After completing the tire inflation pressure measurement and adjustment, apply
soapy water to the valve and check for leakage.

6

Put the tire valve cap back on.

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Lifting the vehicle with a floor jack

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

Front jack point position

Rear jack point position

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