2015 LEXUS LX570 inflation pressure

7674-3. Do-it-yourself maintenance
4
Maintenance and care
LX570_OM_OM60L96U_(U) Installing tire pressure warning valves and transmitters
When replacing tires or wheels, ti re pressure warning valves and trans-
mitters must also be installed.
When new tire pressure warning va lves and transmitters are installed,
new ID codes must be registered in the tire pressure warning computer
and the tire pressure warning system must be initialized. Have tire pres-
sure warning valve and transmitter ID codes registered by your Lexus
dealer. (  P. 768)
Initializing the tire pressure warning system
■ The tire pressure warning system must be initialized in the following
circumstances:
● When rotating the tires in above situation.
● When the set tire pressure has been changed before towing.
(  P. 895)
When the tire pressure warning sy stem is initialized, the current tire
inflation pressure is set as the benchmark pressure.

7684-3. Do-it-yourself maintenance
LX570_OM_OM60L96U_(U) ■ How to initialize the tire pressure warning system
Park the vehicle in safe plac e and turn the “ENGINE START
STOP” switch to OFF. While the vehicle is moving, initialization is not performed.
Adjust the tire inflation pressure to the specified cold tire inflation
pressure level. (  P. 895)Make sure to adjust the tire pressure to the specified cold tire inflation
pressure level. The tire pressure warning system will operate based on
this pressure level.
Turn the “ENGINE START STOP ” switch to IGNITION ON
mode.
Push and hold the tire pressure
warning reset switch until the tire
pressure warning light blinks
slowly 3 times and a message
appears on the multi-information
display.
Wait for a few minutes with th e IGNITION ON mode, and then
turn the “ENGINE START STOP” switch to OFF.
Registering ID codes
The tire pressure warning valve and tra nsmitter is equipped with a unique
ID code. When replacing a tire pre ssure warning valve and transmitter, it
is necessary to register the ID code of tire pressure warning valve and
transmitter. Have the ID code registered by your Lexus dealer.STEP 1
STEP 2
STEP 3
STEP 4
STEP 5

7704-3. Do-it-yourself maintenance
LX570_OM_OM60L96U_(U) ■
Maximum load of tire
Check that the number given by dividing the maximum load by 1.10 of the replace-
ment tire is greater than 1/2 of the Gr oss Axle Weight Ratings (GAWR) of either
the front axle or the rear axle, whichever is greater.
■
Tire types
1 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 perfor-
mance as snow tires, summer tires are inadequate for driving on snow-covered
or icy roads. For driving on snow-cover ed roads or icy roads, the use of snow
tires is recommended. When inst alling snow tires, be sure to replace all four tires.
2 All season tires
All season tires are designed to provide better traction in snow and to be ade-
quate for driving in most winter conditions, as well as for use year round. All sea-
son tires, however, do not have adequa te 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.
3Snow tires
For driving on snow-covered roads or icy roads, we recommend using snow
tires. If you need snow tires, select ti res of the same size, construction and load
capacity as the originally installed tires. Si nce your vehicle has radial tires as orig-
inal equipment, make sure your snow tire s also have radial construction. Do not
install studded tires without first checking local regulations for possible restric-
tion. Snow tires should be installed on all wheels. (  P. 376)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.
(  P. 901)

7714-3. Do-it-yourself maintenance
4
Maintenance and care
LX570_OM_OM60L96U_(U) ■
Initializing the tire pressure warning system
Initialize the tire pressure warning system with the tire inflation pressure adjusted to
the specified level. ■
If you push the tire pressure warning reset switch accidentally
If initialization is performed, adjust the ti re inflation pressure to the specified level
and initialize the tire pre ssure warning system again.■
The initialization operation ●
Make sure to carry out initialization afte r adjusting the tire inflation pressure.
Also, make sure the tires are cold before carrying out initialization or tire infla-
tion pressure adjustment. ●
If you have accidentally turned the “ENGINE START STOP” switch off during
initialization, it is not necessary to pre ss the reset switch again as initialization
will restart automatically when the “ENGINE START STOP” switch has been
turned to IGNITION ON mode for the next time. ●
If you accidentally press the reset switch when initialization is not necessary,
adjust the tire inflation pressure to th e specified level when the tires are cold,
and conduct initialization again.■
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 settings have not been recorded and the system will not operate properly. If
repeated attempts to record tire inflation pressure se ttings are unsu ccessful, have
the vehicle inspected by your Lexus dealer. ●
When operating the tire pressure warnin g reset switch, the tire pressure warn-
ing light does not blink 3 times and the setting message does not appear on the
multi-information display. ●
After carrying out the initialization proc edure, the tire pressure warning light
blinks for 1 minute then stays on after driving for about 20 minutes.■
Routine tire inflation pressure checks
The tire pressure warning sy stem does not replace rout ine tire inflation pressure
checks. Make sure to check tire inflation pressure as part of your routine of daily
vehicle checks.

7734-3. Do-it-yourself maintenance
4
Maintenance and care
LX570_OM_OM60L96U_(U) CAUTION■
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. ■
When inspecting or replacing tires
Observe the following precautions to prevent accidents.
Failure to do so may cause da mage to parts of the drive train, as well as dangerous
handling characteristics, which may lead to an accident resulting in death or serious
injury. ●
Do not mix tires of different ma kes, models or tread patterns.
Also, do not mix tires of re markably different treadwear.●
Do not use tire sizes other th an those recommended by Lexus.●
Do not mix differently constructed tires (r adial, bias-belted or bias-ply tires).●
Do not mix summer, all season and snow tires. ●
Do not use tires that have b een used on another vehicle.
Do not use tires if you do not know how they were used previously. ■
When initializing the tire pressure warning system
Do not push the tire pressure warning reset switch without first adjusting the tire
inflation pressure to the specified level. Otherwise, the tire pr essure 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.

7744-3. Do-it-yourself maintenance
LX570_OM_OM60L96U_(U) NOTICE■
Repairing or replacing tires, wheels, tire pressure warning valves and transmit-
ters and tire valve caps ●
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
transmitter 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 pr essure warning valves and the tire pressure warning
valves could be bound. ●
When replacing tire valve ca ps, do not use tire valve caps other than those speci-
fied. The cap may become stuck.■
To avoid damage to the tire pressure warning valves and transmitters
When a tire is repaired with liquid seal ants, the tire pressu re warning valve and
transmitter may not operate properly. If a liquid sealant is used, contact your Lexus
dealer or other qualified serv ice shop as soon as possible. Make sure to replace the
tire pressure warning valve and tran smitter when replacing the tire. (  P. 767)■
Driving on rough roads
Take particular care when driving on roads with loose su rfaces or potholes.
These conditions may cause losses in tire inflation pressure, reducing the cushion-
ing ability of the tires. In addition driv ing on rough roads may cause damage to the
tires themselves, as well as the vehicle’s wheels and body. ■
If tire inflation pressures become low while driving
Do not continue driving, or your tires and/or wheels may be ruined.

7754-3. Do-it-yourself maintenance
4
Maintenance and care
LX570_OM_OM60L96U_(U) Tire inflation pressure ■ Tire inflation pressure
The recommended cold tire inflation pressure and tire size are dis-
played on the tire and loading information label. (  P. 895)

7764-3. Do-it-yourself maintenance
LX570_OM_OM60L96U_(U) ■ Inspection and adjustment procedure
Tire valve
Tire pressure gauge
Remove the tire valve cap.
Press the tip of the tire pressu re 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 pressure.
If you add too much air, press the center of the valve to deflate.
After completing the tire inflati on pressure measurement and
adjustment, apply soapy water to the valve and check for leak-
age.
Put the tire valve cap back on. STEP 1
STEP 2
STEP 3
STEP 4
STEP 5
STEP 6