LEXUS LX 570 (2019 year). Instruction - part 31

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When to replace your vehicle’s tires
Tires should be replaced if:

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The treadwear indicators are showing on a tire.

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

bulges indicating internal damage

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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.

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Replacing 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. After driving for about 20 minutes, the

tire pressure warning light comes on after blinking for 1 minute to indicate a system mal-

function.

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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.

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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.

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Maximum load of tire
Check that the number given by dividing the maximum load by 1.10 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 men-

tioned on the sidewall of the tire. (

P. 573)

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Tire types

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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.

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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, how-

ever, 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 perfor-

mance compared with summer tires in highway driving.

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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 restriction. Snow tires should be installed

on all wheels. (

P. 388)

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Initializing the tire pressure warning system
Initialize the tire pressure warning system with the tire inflation pressure adjusted to the

specified level.

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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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If you press the tire pressure warning reset switch accidentally
If initialization is performed, adjust the tire inflation pressure to the specified level and ini-

tialize the tire pressure warning system again.

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

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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.

• Tire chains etc. are equipped.

• An auxiliary-supported run-flat tire is 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 the spare tire is in a location subject to poor radio wave signal reception.

• If a large metallic object which can interfere with signal reception is put near the

spare tire.

• If tires not equipped with the 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.

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Performance may be affected in the following situations.
• Near a TV tower, electric power plant, gas station, radio station, large display, air-

port 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 driving and changing the radio wave conditions.

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

extended.

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When tire inflation pressure declines rapidly for example when a tire has burst, the

warning may not function.

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The initialization operation

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Make sure to carry out initialization after adjusting the tire inflation pressure.

Also, make sure the tires are cold before carrying out initialization or tire inflation pres-

sure adjustment.

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If you have accidentally turned the engine switch off during initialization, it is not neces-

sary to press the reset switch again as initialization will restart automatically when the

engine switch has been turned to IGNITION ON mode for the next time.

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If you accidentally press the reset switch when initialization is not necessary, adjust the

tire inflation pressure to the specified level when the tires are cold, and conduct initial-

ization again.

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While the position of each tire is being determined and the inflation pressures are not

being displayed on the multi-information display, if the inflation pressure of a tire drops,

the tire pressure warning light will come on.

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When the initialization of the tire pressure warning system has failed
Initialization can be completed in a few minutes. However, in the following cases, the set-

tings have not been recorded and the system will not operate properly. If repeated

attempts to record tire inflation pressure settings are unsuccessful, have the vehicle

inspected by your Lexus dealer.

●

When operating the tire pressure warning reset switch, the tire pressure warning light

does not blink 3 times and the setting message does not appear on the multi-informa-

tion display.

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After carrying out the initialization procedure, the tire pressure warning light blinks for 1

minute then stays on after driving for about 20 minutes.

If the inflation of each tire is not displayed after driving for approximately 1 hour, perform

the following procedure.

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Park the vehicle in a safe place for approximately 20 minutes. Then drive straight (with

occasional left and right turns) at approximately 25 mph (40 km/h) or more for

approximately 10 to 20 minutes.

However, in the following situations, the tire inflation pressure will not be recorder and

the system will not operate properly. Perform initialization.

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When operating the tire pressure warning reset switch, the tire pressure warning light

does not blink 3 times.

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After performing initialization, the tire pressure warning light blinks for 1 minute then

stays on after driving for about 20 minutes.

If the inflation pressure of each tire is still not displayed, have the vehicle inspected by

your Lexus dealer.

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Tire pressure warning system certification



For vehicles sold in the U.S.A., Hawaii, Guam and Puerto Rico

FCC ID: PAXPMVC015
NOTE

This device complies with part 15 of the FCC Rules.

Operation is subject to the following two conditions:

(1) This device may not cause harmful interference, and (2) this device must accept any

interference received, including interference that may cause undesired operation.
FCC WARNING

Changes or modifications not expressly approved by the party responsible for compli-

ance could void the user’s authority to operate the equipment.



For vehicles sold in Canada

Model: PMV-C015
NOTE

This device complies with Industry Canada licence-exempt RSS standard(s). Operation

is subject to the following two conditions: (1) this device may not cause interference, and

(2) this device must accept any interference, including interference that may cause

undesired operation of the device.

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WARNING

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Tire pressure warning system operation
The tire pressure warning system may not provide warning immediately if a tire bursts

or if sudden air leakage occurs.

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When inspecting or replacing tires
Observe the following precautions to prevent accidents.

Failure to do so may cause damage to parts of the drive train, as well as dangerous han-

dling characteristics, which may lead to an accident resulting in death or serious injury.

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Do not mix tires of different makes, models or tread patterns.

Also, do not mix tires of remarkably different treadwear.

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

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

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Do not mix summer, all season and snow tires.

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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.

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When initializing the tire pressure warning system
Do not operate the tire pressure warning reset switch without first adjusting the tire

inflation pressure to the specified level. Otherwise, the tire pressure warning light may

not come on even if the tire inflation pressure is low, or it may come on when the tire

inflation pressure is actually normal.

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NOTICE

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

and tire valve caps

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When removing or fitting the wheels, tires or the tire pressure warning valve and

transmitter, contact your Lexus dealer as the tire pressure warning valve and trans-

mitter may be damaged if not handled correctly.

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Make sure to install the tire valve caps. If the tire valve caps are not installed, water

could enter the tire pressure warning valves and the tire pressure warning valves

could be bound.

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When replacing tire valve caps, do not use tire valve caps other than those specified.

The cap may become stuck.

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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 trans-

mitter 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. (

P. 489)

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Driving on rough roads
Take particular care when driving on roads with loose surfaces or potholes.

These conditions may cause losses in tire inflation pressure, reducing the cushioning

ability of the tires. In addition driving on rough roads may cause damage to the tires

themselves, as well as the vehicle’s wheels and body.

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If tire inflation pressures become low while driving
Do not continue driving, or your tires and/or wheels may be ruined.

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Tire inflation pressure

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

P. 569)

Tire inflation pressure

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Tire valve
Tire pressure gauge

Remove the tire valve cap.
Press the tip of the tire pressure gauge onto the tire valve.
Read the pressure using the gauge gradations.
If the tire inflation pressure is not at the recommended level, adjust the pres-
sure.
If you add too much air, press the center of the valve to deflate.
After completing the tire inflation pressure measurement and adjustment,
apply soapy water to the valve and check for leakage.
Put the tire valve cap back on.

Inspection and adjustment procedure

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3
4

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Tire inflation pressure check interval
You should check tire inflation pressure every two weeks, or at least once a month. Do

not forget to check the spare.

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

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Reduced fuel economy

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Reduced driving comfort and poor handling

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Reduced tire life due to wear

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Reduced safety

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Damage to the drive train

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

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Instructions for checking tire inflation pressure
When checking tire inflation pressure, observe the following:

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Check only when the tires are cold.

If your vehicle has been parked for at least 3 hours and 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.

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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.

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Never exceed the vehicle capacity weight.

Passengers and luggage weight should be placed so that the vehicle is balanced.

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WARNING

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Proper inflation is critical to save tire performance
Keep your tires properly inflated.

If the tires are not properly inflated, the following conditions may occur which could

lead to an accident resulting in death or serious injury:

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Excessive wear

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Uneven wear

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Poor handling

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Possibility of blowouts resulting from overheated tires

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Air leaking from between tire and wheel

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Wheel deformation and/ or tire damage

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Greater possibility of tire damage while driving (due to road hazards, expansion

joints, sharp edges in the road, etc.)

NOTICE

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When inspecting and adjusting tire inflation pressure
Be sure to put the tire valve caps back on.

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.

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Wheels

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 your Lexus dealer.

: Conventionally referred to as “offset”.

Lexus does not recommend using the following:

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Wheels of different sizes or types

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Used wheels

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Bent wheels that have been straightened

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Use only Lexus wheel nuts and wrenches designed for use with your alumi-
num wheels.

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When rotating, repairing or changing your tires, check that the wheel nuts are
still tight after driving 1000 miles (1600 km).

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Be careful not to damage the aluminum wheels when using tire chains.

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Use only Lexus genuine balance weights or equivalent and a plastic or rubber
hammer when balancing your wheels.

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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. (

P. 489)

If a wheel is bent, cracked or heavily corroded, it should be replaced.
Otherwise, the tire may separate from the wheel or cause loss of handling
control.

Wheel selection

Aluminum wheel precautions

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WARNING

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When replacing wheels

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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.

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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.

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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

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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 your Lexus dealer or other qualified

service shop. In addition, make sure to purchase your tire pressure warning valves

and transmitters at your Lexus dealer.

●

Ensure that only genuine Lexus wheels are used on your vehicle.

Tire pressure warning valves and transmitters may not work properly with non-genu-

ine wheels.

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Air conditioning filter

Turn the engine switch IGNITION ON mode and switch to recirculated air
mode, then turn the engine switch off.
Open the glove box and remove the separate tray. (

P. 427)

Remove the filter cover.

Remove the filter case.

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

Removal method

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If the filter is dirty, clean by blowing
compressed air through the filter from
the downward side.

Hold the air gun 2 in. (5 cm) from the fil-

ter and blow for approximately 2 min-

utes at 72 psi (500 kPa, 5.0 kgf/cm

bar).

If it is not available, have the filter

cleaned by your Lexus dealer.

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

The “

UP” marks shown on the filter

should be pointing up.

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Checking interval
Inspect, clean and replace the air conditioning filter according to the maintenance

schedule. In dusty areas or areas with heavy traffic flow, more frequent cleaning or early

replacement may be required.

(For scheduled maintenance information, please refer to the “Owner’s Manual

Supplement” or “Scheduled Maintenance”.)

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If air flow from the vents decreases dramatically
The filter may be clogged. Check the filter and replace if necessary.

Cleaning method

Replacement method

NOTICE

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To prevent damage to the system

●

When using the air conditioning system, make sure that a filter is always installed.

●

When cleaning the filter, do not clean the filter with water.

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Electronic key battery

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Flathead screwdriver

●

Lithium battery (CR2032)

Take out the mechanical key.

Remove the cover.

To prevent damage to the key, cover the

tip of the flathead screwdriver with a

tape.

Remove the depleted battery.

When removing the cover, if the battery

cannot be seen due to the electronic key

module attaching to the upper cover,

remove the electronic key module from

the cover so that the battery is visible as

shown in the illustration.
Insert a new battery with the “+” termi-

nal facing up.

Replace the battery with a new one if it is depleted.

You will need the following items:

Replacing the battery

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