Lexus NX (2022 year). Manual in english — page 31
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
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 customise].
4
Select [Tyre 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.
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.
8-5. Tire maintenance
506
●
If tire inflation pressure setting procedure cannot be completed after performing
the above procedure, contact any authorized Lexus retailer or Lexus authorized
repairer, or any reliable repairer.
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 customise].
5
Select [Tyre 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
multi-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 any authorized Lexus retailer or Lexus authorized
repairer, or any reliable repairer.
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.
8-5. Tire maintenance
508
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 customise].
5
Select [Tyre 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 tyre 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.
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9
Drive straight (with occasional left and right turns) at approximately 40 km/h
(25 mph) or more for approximately 10 to 30 minutes.
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 40 km/h (25 mph) 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 40 km/h (25 mph) 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 40 km/h (25 mph) 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 any authorized Lexus retailer or Lexus authorized repairer, or any reliable
repairer.
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.
8-5. Tire maintenance
510
If the specified tire inflation pressure is the same, it will not be necessary to perform the
tire inflation pressure setting procedure.
Related Links
Setting the tire pressure(P. 505)
Canceling ID code registration
To cancel ID code registration after it has been started, select [New tyre 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 tyre 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 customise].
4
Select [Tyre 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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Maintenance and car
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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 approxi-
mately 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. 504)
8-5. Tire maintenance
512
Checking tire inflation pressure
Make sure to maintain proper tire inflation pressure. Tire inflation pressure should
be checked at least once per month. However, Lexus recommends that tire
inflation pressure be checked once every two weeks.
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 any authorized Lexus retailer or
Lexus authorized repairer, or any reliable repairer.
■
Instructions for checking tire inflation pressure
When checking tire inflation pressure, observe the following:
●
Check only when the tires are cold.
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If your vehicle has been parked for at least 3 hours or has not been driven for
more than 1.5 km or 1 mile, you will get an accurate cold tire inflation pressure
reading.
●
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.
●
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.
8-5. Tire maintenance
514
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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Rotating the tires
To equalize tire wear and help extend tire life, Lexus recommends that you rotate
your tires approximately at the following intervals:
2WD models: Rotate the tires every 10000 km (6000 miles)
AWD models: Rotate the tires every 5000 km (3000 miles)
Rotate the tires as shown in the illustration.
Make sure to perform wheel position registration procedure after rotating the tires.
A
Front
Related Links
Registration of the position of each wheel after performing a tire rotation(P. 504)
8-5. Tire maintenance
516
Wheels
If a wheel is bent, cracked or heavily corroded, it should be replaced. Otherwise,
the tire may separate from the wheel, causing a loss of handling control.
Wheel selection
When replacing wheels, care should be taken to ensure that they are equivalent to
those removed in load capacity, diameter, rim width and inset
Replacement wheels are available at any authorized Lexus retailer or Lexus au-
thorized repairer, or any reliable repairer.
Lexus does not recommend using the following:
●
Wheels of different sizes or types
●
Used wheels
●
Bent wheels that have been straightened
INFORMATION
■
When replacing wheels
The wheels of your vehicle are equipped with tire pressure warning valves and transmit-
ters that allow the tire pressure warning system to provide advance warning in the event
of a loss in tire inflation pressure.
Whenever wheels are replaced, tire pressure warning valves and transmitters must be
installed.
WARNING
■
When replacing wheels
●
Do not use wheels that are a different size from those recommended in the Owner’s
Manual, as this may result in a loss of handling control.
●
Never use an inner tube in a leaking wheel which is designed for a tubeless tire. Doing
so may result in an accident, causing death or serious injury.
●
Use the correct wheel bolts for the wheels to be installed.
For details, contact any authorized Lexus retailer or Lexus authorized repairer, or any
reliable repairer.
■
Wheel bolts
Observe the following precautions to reduce the risk of death or serious injury:
*1 :
Conventionally referred to as offset.
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WARNING
●
Do not over tighten.
●
Never use oil or grease on the wheel bolts. Oil and grease may cause the wheel bolts
to be excessively tightened, leading to bolt or disc wheel damage. In addition, the oil
or grease can cause the wheel bolts to loosen and the wheel may fall off, causing a
serious accident. Remove any oil or grease from the wheel bolts.
●
If there are any cracks or deformations in the wheel bolts, or if the surface treatment
becomes worn, have the wheel bolts replaced at any authorized Lexus retailer or
Lexus authorized repairer, or any reliable repairer. Failure to follow these precautions
could cause the wheel bolts to loosen and the tire to fall off, resulting in death or
serious injury.
■
Use of defective wheels prohibited
Do not use cracked or deformed wheels.
Doing so could cause the tire to leak air during driving, possibly causing an accident.
NOTICE
■
Replacing tire pressure warning valves and transmitters
●
Because tire repair or replacement may affect the tire pressure warning valves and
transmitters, make sure to have tires serviced by any authorized Lexus retailer or
Lexus authorized repairer, or any reliable repairer or other qualified service shop. In
addition, make sure to purchase your tire pressure warning valves and transmitters at
any authorized Lexus retailer or Lexus authorized repairer, or any reliable repairer.
●
Ensure that only genuine Lexus wheels are used on your vehicle.
Tire pressure warning valves and transmitters may not work properly with non-genuine
wheels.
Aluminum wheel precautions
Observe the following precautions when handling the aluminum wheels.
●
Use only Lexus wheel bolts and wrenches designed for use with your aluminum
wheels.
●
When rotating, repairing or changing your tires, check that the wheel bolts are
still tight after driving 1000 km (621 miles).
●
Be careful not to damage the aluminum wheels when using tire chains.
●
Use only Lexus genuine balance weights or equivalent and a plastic or rubber
hammer when balancing your wheels.
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9
When trouble arises
9-1. What to do if a problem occurs
curs while driving. . . . . .
9-2. If a warning light illuminates/flash-
es or a warning message is dis-
played on the meter
flashes. . . . . . . . . . . .
played. . . . . . . . . . . .
9-3. If the engine will not start
When the engine will not start
even though the starter op-
erates. . . . . . . . . . . ...
slowly and the engine cannot
be started. . . . . . . . . ..
erate and the engine cannot
be started. . . . . . . . . ..
headlights are dim and the
engine cannot be started . ..
headlights do not illuminate
and the engine cannot be
started . . . . . . . . . . .
low volume and the engine
cannot be started . . . . . .
sound and the engine cannot
be started. . . . . . . . . .
tire (vehicles with a spare
tire) . . . . . . . . . . . . .
If you get a flat front tire on a
snowy or icy road (vehicles
with a spare tire). . . . . . .
have a flat tire (vehicles with
run-flat tires) . . . . . . . .
9-5. If a door cannot be opened or
If a key has been lost. . . . .
moon roof cannot be operat-
ed using an electronic key . .
. . . . . . . . . . . . . . ..
opened from the inside . . ...
opened. . . . . . . . . . ...
9-6. If the moon roof or electronic
sunshade does not operate cor-
rectly
519
9
When tr
ouble arises
electronic sunshade does
not operate correctly. . . ...
9-7. If refueling cannot be performed
If the fuel filler door cannot be
opened. . . . . . . . . . ..
9-8. If an indicator on an interior fea-
operation indicator light (on
the charging tray) flashes. ..
9-9. If the vehicle cannot move
ed but the vehicle does not
move . . . . . . . . . . . ...
normal sounds . . . . . . ...
Towing with a tow truck. . . .
Using a flatbed truck. . . . ..
9-10. If you think something is wrong
found. . . . . . . . . . . .
ted from the vehicle. . . . ...
mally. . . . . . . . . . . . .
9-11. Items to check before contacting
turned after the engine is
stopped. . . . . . . . . . ...
close by operating the power
window switches. . . . . . .
The engine switch is turned off
automatically. . . . . . . .
If your vehicle overheats. . ...
not be used or do not oper-
ate when a switch is operat-
ed . . . . . . . . . . . . . .
If a light does not illuminate. ..
520
What to do if a problem occurs while driving
What to do if a problem occurs while driving
Using the emergency flashers to warn other drivers
Use the emergency flashers to inform other drivers of the presence of your vehicle
when it is stopped on the road, such as if the vehicle has broke down.
Press the switch.
All the turn signal lights will flash. To turn them off,
press the switch once again.
INFORMATION
■
Emergency flashers
●
If the emergency flashers are used for a long time with the engine stopped, the battery
may become discharged.
●
If any of the SRS airbags deploy (inflate) or in the event of a strong rear impact, the
emergency flashers will turn on automatically.
The emergency flashers will turn off automatically after operating for approximately
20 minutes. To manually turn the emergency flashers off, press the switch twice. (The
emergency flashers may not turn on automatically depending on the force of the
impact and conditions of the collision.)
Stopping the vehicle in an emergency
Stop the vehicle using the following procedure only in an emergency, such as if it
becomes impossible to stop the vehicle in the normal way:
WARNING
■
If the engine has to be stopped while driving
Power assist for the brakes and steering wheel will be lost, making the brake pedal harder
to depress and the steering wheel heavier to turn. Decelerate as much as possible before
stopping the engine.
1
Steadily step on the brake pedal with both feet and firmly depress it.
Do not pump the brake pedal repeatedly as this will increase the effort required to
slow the vehicle.
9-1. What to do if a problem occurs while driving
521
9
When tr
ouble arises
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