warning LEXUS LX570 2015 Workshop Manual

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

7694-3. Do-it-yourself maintenance
4
Maintenance and care
LX570_OM_OM60L96U_(U) ■
When to replace your vehicle’s tires
Tires should be replaced if: ●
You have tire damage such as cuts, splits, cracks deep enough to expose the
fabric, and bulges indicating internal damage ●
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, consul t with your Lexus dealer.■
Replacing tires and wheels
If the ID code of the tire pressure warning valve and transmitter is not registered,
the tire pressure warning sy stem will not work properly. After driving for about 20
minutes, the tire pressure warning light come s on after blinking for 1 minute to indi-
cate a system malfunction. ■
When rotating the tires
Make sure that the “ENGINE START STOP” switch is off. If the tires are rotated
while the “ENGINE START STOP” switch is in IGNITION ON mode, the tire posi-
tion information will not be updated.
If this accidentally occurs, either turn the “ENGINE START STOP” switch to off
and then to IGNITION ON mode, or initia lize the system afte r checking that the
tire pressure is properly adjusted. ■
Tire life
Any tire over 6 years old mu st be checked by a qualified technician even if it has
seldom or never been used or damage is not obvious. ■
If the tread on snow tires wears down below 0.16 in. (4 mm)
The effectiveness of the tire s as snow tires is lost.

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.

7724-3. Do-it-yourself maintenance
LX570_OM_OM60L96U_(U) ■
Tire pressure warning system certification
For vehicles sold in the U.S.A ., Hawaii, Guam and Puerto RicoFCC ID: PAXPMV107J
NOTE
This device complies with part 15 of the FCC Rules. Operation is subject to the fol-
lowing two conditions: (1) This device ma y not cause harmful in terference, and (2)
this device must accept any interference received, including in terference that may
cause undesired operation.
FCC WARNING
Changes or modifications not expressly ap proved by the party responsible for com-
pliance could void the user’s authority to operate the equipment.
FCC ID: HYQ13BCX
NOTE:
This device complies with part 15 of th e 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 in terference that may
cause undesired operation.
FCC WARNING:
Changes or modifications not expressly ap proved by the party responsible for com-
pliance could void the user’s authority to operate the equipment.
For vehicles sold in Canada
NOTE
Operation is subject to the following two conditions: (1) this device may not cause
interference, and (2) this device must accept any interference, including interfer-
ence that may cause undesired operation of the device.

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.

7804-3. Do-it-yourself maintenance
LX570_OM_OM60L96U_(U) ■
When replacing wheels
The wheels of your Lexus are equipped with tire pressure warning valves and trans-
mitters that allow the tire pressure warning system to provide advanced warning in
the event of a loss in tire inflation pressure. Whenever wheels are replaced, the tire
pressure warning valves and tran smitters must be installed. (  P. 767)
CAUTION■
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 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 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 acci-
dent.
NOTICE■
Replacing tire pressure warning valves and transmitters ●
Because tire repair or re placement may affect the tire pressure warning valves
and transmitters, make sure to have tires serviced by your Le xus dealer or other
qualified service shop. In addition, make sure to purchase your tire pressure
warning valves and transmitte rs at your Lexus dealer.●
Ensure that only genuine Lexus wheels are used on your vehicle.
Tire pressure warning valv es and transmitters may not work properly with non-
genuine wheels.

8004-3. Do-it-yourself maintenance
LX570_OM_OM60L96U_(U) ■ Passenger’s side instrument panel
Fuse Ampere Circuit
1 RSF LH 30 A Third seat adjustment (left)
2 B/DR CLSR RH 30 A Back door closer
3 B/DR CLSR LH 30 A Back door closer
4 RSF RH 30 A Third seat adjustment (right)
5 DOOR DL 15 A No circuit
6 AHC-B 20 A 4-Wheel AHC
7 TEL 5 A Multimedia
8 TOW BK/UP 7.5 A Towing
9 AHC-B No.2 10 A 4-Wheel AHC
10 ECU-IG No.4 5 A VGRS, power back door, rear ECU,
4-Wheel AHC, third seat adjustment,
tire pressure warning system ECU

When trouble arises
5
815
LX570_OM_OM60L96U_(U) 5-1. Essential information
Emergency flashers ............... 816
If your vehicle needs to be
towed ....................................... 817
If you think something is
wrong ..................................... 824
Fuel pump shut off
system .................................... 825 5-2. Steps to take in an
emergency
If a warning light turns on
or a warning buzzer
sounds... ................................. 826
If a warning message is
displayed................................ 837
If you have a flat tire .............. 854
If the engine will not
start ......................................... 868
If the shift lever cannot be
shifted from “P”.................... 870
If you lose your keys ............... 871
If the electronic key does
not operate properly ......... 872
If the battery is
discharged ............................ 875
If your vehicle overheats ..... 878
If the vehicle becomes
stuck......................................... 881
If your vehicle has to be
stopped in an
emergency............................ 883

826
LX570_OM_OM60L96U_(U) 5-2. Steps to take in an emergency
If a warning light turns on or a warning buzzer sounds...Stop the vehicle immediately. Continui ng to drive the vehicle may be
dangerous.
The following warning in dicates a possible prob lem in the brake system.
Immediately stop the vehicle in a sa fe place and contact your Lexus
dealer.
* : Parking brake engaged warning buzzer:
A buzzer sounds to indicate that the parking brake is still engaged (with the
vehicle having reached a speed of 3 mph [5 km/h]).
Stop the vehicle immediately.
The following warning indicates the po ssibility of damage to the vehicle
that may lead to an accident. Immedia tely stop the vehicle in a safe place
and contact your Lexus dealer. Warning light Warning light/Details
(U.S.A.)
(Canada) Brake system warning light (warning buzzer)
*•Low brake fluid
• Malfunction in the brake system
This light also comes on when the parking brake is not
released. If the light turns off after the parking brake is fully
released the system is operating normally.
Warning light Warning light/Details
Charging system warning light
Indicates a malfunction in the vehicle’s charging system.Calmly perform the following actions if any of the warning lights turn on or
flash. If a light turns on or flashes, bu t then turns off, this does not necessar-
ily indicate a malfunction in the system. However, if this continues to occur,
have the vehicle inspecte d by your Lexus dealer.