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LX570_OM_OM60R07U_(U) 4896-3. Do-it-yourself maintenance
6
Maintenance and care Your Lexus is equipped with a tire pressu re warning system that uses tire pres-
sure warning valves and transmitters to detect low tire inflation pressure before
serious problems arise. ●
If the tire pressure drops below a predet ermined level, the driver is warned by
a screen display and a warning light. ( P. 525)●
The tire pressure detected by the
tire pressure warning system can be
displayed on the multi-information
display. ( P. 96)
◆ Installing tire pressure warning valves and transmitters
When replacing tires or wheels, tire pr essure warning valv es and transmitters
must also be installed.
When new tire pressure wa rning valves and transmitters are installed, new ID
codes must be registered in the tire pressure warning computer and the tire
pressure warning system must be initia lized. Have tire pressure warning valve
and transmitter ID codes registered by your Lexus dealer. ( P. 490)
◆ Initializing the tire pressure warning system ■
The tire pressure warning system must be initialized in the following circum-
stances: ●
When rotating the tires in above situation. ●
When the set tire pressure has been changed before towing. ( P. 569)
When the tire pressure warning system is initialized, the current tire inflation
pressure is set as the benchmark pressure.Tire pressure warning system
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490
LX570_OM_OM60R07U_(U) 6-3. Do-it-yourself maintenance■
How to initialize the tire pressure warning system
Park the vehicle in safe place and turn the engine switch to off. Initialization cannot be performed while the vehicle is moved.
Adjust the tire inflation pressure to th e specified cold tire inflation pressure
level. ( P. 569)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 switch to IGNITION ON mode.
Push and hold the tire pressure
warning reset switch until the tire
pressure warning light blinks
slowly 3 times. “--” will be displayed for inflation
pressure of each tire on the multi-
information displa y while the tire
pressure warning system determines
the position of each tire.
When position of each tire is determined, the inflation pressure of each tire will be
displayed on the mult i-information display.
Drive the vehicle at approximately 25 mph (40 km/h) or more for approx-
imately 10 minutes. When initialization is comple te, the inflation pressure of each tire will be displayed
on the multi-information display.
Initialization will take long er than approximately 10 minutes if the vehicle is
stopped for a long time, su ch as at traffic signals.
◆ Registering ID codes
The tire pressure warning valve and tran smitter is equipped with a unique ID
code. When replacing a tire pressure warning valve and transmitter, it is nec-
essary to register the ID code of tire pressure warning valve and transmitter.
Have the ID code registered by your Lexus dealer. 1
2
3
4
5
Page 493 of 632

LX570_OM_OM60R07U_(U) 4936-3. Do-it-yourself maintenance
6
Maintenance and care ●
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 st rong radio waves or electrical noise
• When carrying a portable radio, cellular phone, cordless phon e or other wireless
communication device
If tire position information is not correctl y displayed due to the radio wave conditions,
the display may be corrected by driving and changing the radio wave conditions. ●
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
warning may not function. ■
The initialization operation ●
Make sure to carry out initialization afte r adjusting the tire inflation pressure.
Also, make sure the tires are cold before carryi ng out initialization or tire inflation pres-
sure adjustment. ●
If you have accidentally turned the engine swit ch off during initialization, it is not neces-
sary to press the reset switch again as initialization will re start automatically when the
engine switch has been turned to IG NITION ON mode for the next time.●
If you accidentally press the re set switch when initialization is not necessary, adjust the
tire inflation pressure to the specified leve l when the tires are co ld, and conduct initial-
ization again. ●
While the position of each tire is being de termined and the inflation pressures are not
being displayed on the multi-info rmation display, if the inflat ion pressure of a tire drops,
the tire pressure warning light will come on.
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494
LX570_OM_OM60R07U_(U) 6-3. Do-it-yourself maintenance■
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 pres sure warning reset switch, th e tire pressure warning light
does not blink 3 times and the setting mess age does not appear on the multi-informa-
tion display. ●
After carrying out the initializat ion procedure, the tire pressu re warning light blinks for 1
minute then stays on after driving for about 20 minutes.
If the inflation of each tire is not displaye d after driving for approximately 1 hour, perform
the following procedure. ●
Park the vehicle in a safe place for approxim ately 20 minutes. Then drive straight (with
occasional left and right turns) at appr oximately 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 pr operly. Perform initialization.●
When operating the tire pres sure warning reset switch, th e tire pressure warning light
does not blink 3 times. ●
After performing initia lization, the tire pressure warning light blinks for 1 minute then
stays on after driving for about 20 minutes.
If the inflation pressure of ea ch tire is still not displayed, have the vehicle inspected by
your Lexus dealer. ■
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 pa rty 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 st andard(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.
Page 497 of 632
497
LX570_OM_OM60R07U_(U) 6-3. Do-it-yourself maintenance
6
Maintenance and care
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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511
LX570_OM_OM60R07U_(U) 7When trouble arises 7-1. Essential information
Emergency flashers ................... 512
If your vehicle has to be
stopped in an emergency..... 513
If the vehicle is trapped
in rising water ............................ 514
7-2. Steps to take in an emergency
If your vehicle needs
to be towed................................. 515
If you think something is
wrong ............................................ 521
Fuel pump shut off system ...... 522
If a warning light turns
on or a warning buzzer
sounds.......................................... 523
If a warning message is
displayed...................................... 531
If you have a flat tire ..................535
If the engine will not start ........ 547
If the electronic key does
not operate properly ............. 549
If the vehicle battery is
discharged ................................. 552
If your vehicle overheats .........555
If the vehicle becomes
stuck ............................................ 558
Page 524 of 632

524 7-2. Steps to take in an emergency
LX570_OM_OM60R07U_(U) (Flashes or illuminates)
PCS warning light (if equipped)
Indicates a malfunction in the PCS (Pre-Collision System) or that
the system is temporarily unavailable due to the vehicle being
extremely hot/cold, or dirt around a front sensor, etc. ( P. 266,
531)
Follow the instructions displaye d on the multi-information dis-
play. ( P. 266, 531)
If the PCS (Pre-Collision System ) or VSC (Vehicle Stability Con-
trol) system is disabled, the PC S warning light will illuminate.
P. 266
Slip indicator
Indicates a malfunction in:
• The Multi-terrain Select;
• The Crawl Control;
• The VSC (Vehicle Stability Control) system;
• Active TRAC (Traction Control) system;
• Trailer Sway Control; or
• The hill-start assist control system
The light will flash when any of the above systems other than the
Multi-terrain Select are operating.
Have the vehicle inspected by your Lexus dealer immediately.
Automatic headlight leve ling system warning light
Indicates a malfunction in the automatic headlight leveling system
Have the vehicle inspected by your Lexus dealer immediately.Warning light Warning light/Details/Actions
Page 531 of 632
531
LX570_OM_OM60R07U_(U) 7
When trouble arises 7-2. Steps to take in an emergency
If a warning message is displayed Master warning light The master warning light also comes on
or flashes in order to indicate that a mes-
sage is currently being displayed on the
instrument cluster.
Multi-information display
Handling Method Follow the instructions of the message
on the multi-information display.
If any of the warning messages are show n again after the following actions have
been performed, contact your Lexus dealer.The multi-information display shows warn ings of system malfunctions, incor-
rectly performed operations, and messag es that indicate a need for mainte-
nance. When a message is shown, perform the correction procedure
appropriate to the message. 1
2
3