belt LEXUS LX570 2015 Repair Manual

7494-3. Do-it-yourself maintenance
4
Maintenance and care
LX570_OM_OM60L96U_(U) CAUTIONThe engine compartment contains many mechanisms and fluids that may move sud-
denly, become hot, or become electrically energized. To avoid death or serious injury
observe the following precautions. ■
When working on the engine compartment ●
Keep hands, clothing and t ools away from the moving fa ns and engine drive belt.●
Be careful not to touch the engine, radiator, exhaust mani fold, etc. right after driv-
ing as they may be hot. Oil and other fluids may also be hot. ●
Do not leave anything that may burn easily, such as paper or rags, in the engine
compartment. ●
Do not smoke, cause sparks or expose an open flame to fuel or the battery. Fuel
and battery fumes are flammable. ●
Be extremely cautious when working on the battery. It contains poisonous and
corrosive sulfuric acid.■
When working near the electric cooling fan or radiator grille
Be sure the “ENGINE START STOP” switch is OFF.
With the “ENGINE START ST OP” switch in IGNITION ON mode, the electric
cooling fan may automatically start to run if the air conditioning is on and/or the
coolant temperature is high. (  P. 758)■
When working on or under the vehicle ●
Do not get under the vehicle with just the jack supporting it.
Always use automotive jack st ands or other solid supports.●
Use eye protection to prevent flying or falling material, fluid spray, etc. from get-
ting in your eyes.
NOTICE■
If you remove the air cleaner filter
Driving with the air cleaner removed may cause excessive engine wear due to dirt
in the air.

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.

7984-3. Do-it-yourself maintenance
LX570_OM_OM60L96U_(U) 9 WIPER 30 A Windshield wiper
10 WSH 20 A Windshield washer
11 RR WIPER 15 A Rear window wiper and washer
12 4WD 20 A Four-wheel drive system
13 LH-IG 5 A Alternator, towing, seat heater and
ventilators, windshield wiper de-icer,
front seat belt, emergency flasher,
inverter switch, shift lever switch
14 ECU-IG No.1 5 A ABS, VSC, tilt and telescopic steer-
ing, gateway ECU, shift lock system,
parking assist system, cruise control
switch, pre-collision system, headlight
cleaner, multi-display assembly, rain-
sensing windshield wiper, driving
position memory system, power door
lock system
15 S/ROOF 25 A Moon roof
16 RR DOOR RH 20 A Power windows
17 MIR 15 A Mirror ECU, outside rear view mirror
defoggers
18 RR DOOR LH 20 A Power windows
19 FR DOOR LH 20 A Power windows
20 FR DOOR RH 20 A Power windowsFuse Ampere Circuit

5
When trouble arises
8275-2. Steps to take in an emergency
LX570_OM_OM60L96U_(U) Have the vehicle inspected immediately.
Failing to investigate the ca use of the following warn ings may lead to the
system operating abnormally and possi bly cause an accident. Have the
vehicle inspected by your Lexus dealer, immediately. Warning light Warning light/Details
(U.S.A.)
(Canada) Malfunction indicator lamp
Indicates a malfunction in:
• The emission control system;
• The electronic engine control system;
• The electronic throttle control system; or
• The electronic automatic transmission control system.
SRS warning light
Indicates a malfunction in:
• The SRS airbag system;
• The front passenger occupant classification system; or
• The seat belt pretensioner system.
(U.S.A.)
(Canada) ABS warning light
Indicates a malfunction in:
•The ABS; or
• The brake assist system.
(Comes on or
flashes) Pre-collision system warning light (if equipped)
Indicates:
• Malfunction in the pre-collision system if the light comes on.
• The system cannot temporarily be used if the light flashes.
(  P. 845)

5
When trouble arises
8295-2. Steps to take in an emergency
LX570_OM_OM60L96U_(U) Driver’s seat belt
reminder light
(warning buzzer)
* 2
Warns the driver to fasten
his/her seat belt. Fasten the seat belt.
(On the center
panel) Front passenger’s seat belt
reminder light
(warning buzzer)
* 2
Warns the front passenger to
fasten his/her seat belt. Fasten the seat belt.
Tire pressure warning light
When the light comes on:
Low tire inflation pressure
such as
• Natural causes (  P. 832)
• Flat tire (  P. 854) Adjust the tire inflation pres-
sure (including the spare tire)
to the specified level.
The light will turn off after a
few minutes. In case the light
does not turn off even if the
tire inflation pressure is
adjusted, have the system
checked by your Lexus
dealer.
When the light comes on after
blinking for 1 minute:
Malfunction in the tire pres-
sure warning system.
(  P. 834) Have the system checked by
your Lexus dealer.Warning light Warning light/Details Correction procedure

5
When trouble arises
8315-2. Steps to take in an emergency
LX570_OM_OM60L96U_(U) * 1
: Open door warning buzzer:
The open door warning buzzer sounds to alert one or more of the doors is not
fully closed (with the vehicle having reached a speed of 3 mph [5 km/h]).
* 2
: Driver’s seat belt buzzer:
The driver’s seat belt buzzer sounds to alert the driver that his or her seat belt
is not fastened. Once the engine switch is turned to IGNITION ON mode,
the buzzer sounds for 6 seconds. If the vehicle reaches a speed of 12 mph
(20 km/h), the buzzer sounds once. If th e seat belt is still unfastened after 30
seconds, the buzzer will so und intermittently for 10 seconds. Then, if the seat
belt is still unfastened, the buzzer w ill sound in a different tone for 20 more
seconds.
Front passenger’s seat belt buzzer:
The front passenger’s seat belt buzzer sounds to alert the front passenger that
his or her seat belt is not fastened. The buzzer sounds once if the vehicle
reaches a speed of 12 mph (20 km/h). If the seat belt is still unfastened after 30
seconds, the buzzer will so und intermittently for 10 seconds. Then, if the seat
belt is still unfastened, the buzzer w ill sound in a different tone for 20 more
seconds. Master warning light
A buzzer sounds and the
warning light comes on or
flashes to indicate that the
master warning system has
detected a malfunction.  P. 837Warning light Warning light/Details Correction procedure

8325-2. Steps to take in an emergency
LX570_OM_OM60L96U_(U) ■
If the malfunction indicator lamp comes on while driving
First check the following: ●
Is the fuel empty?
If it is, fill the fuel tank immediately. ●
Is the fuel tank cap loose?
If it is, tighten it securely.
The malfunction indicator lamp will go off after taking several driving trips.
If the malfunction indicator lamp does not go off even after several trips, contact
your Lexus dealer as soon as possible. ■
If the low speed four-wheel drive indicato r light or the center differential lock
indicator light blinks
Take the specified steps. (  P. 335)
If the brake system warning light or the malfunction indicator light also comes on, or
the low speed four-wheel drive indicator light or the center differential lock indica-
tor light continues to blink after taking th e specified steps, there may be a malfunc-
tion in the engine, the brake system or the four-wheel drive system. In this case, you
may not be able to transfer between “H4” and “L4” modes, and the center differen-
tial lock may not be able to be locked or unlocked. Have the vehicle inspected by
your Lexus dealer, immediately. ■
Front passenger detection sensor and passenger seat belt reminder●
If luggage is placed on the front pass enger seat, the front passenger detection
sensor may cause the warning light to flash, even if a passenger is not sitting in
the seat. ●
If a cushion is placed on the seat, the sensor may not detect a passenger, and
the warning light may not operate properly.

5
When trouble arises
8335-2. Steps to take in an emergency
LX570_OM_OM60L96U_(U) ■
SRS warning light
This warning light system monitors the following: ●
The airbag sensor assembly ●
Front impact sensors ●
Side impact sensors (rear) ●
Side impact sensors (front door) ●
Safing sensor (rear) ●
The driver’s seat belt buckle switch ●
The driver’s seat position sensor ●
Front passenger’s seat belt buckle switch ●
The airbags ●
The interconnecting wiring and power sources ●
The front passenger occupa nt classification system●
“AIR BAG ON” and “AIR BAG OFF” indicator lights●
Seat belt pretensioners and force limiters ●
The “RSCA OFF” indicator light■
Changing the engine oil
Make sure to rese t oil change system■
When the tire pressure warning light comes on
Check the tire inflation pressure and adju st to the appropriate level. Pushing the
tire pressure warning reset sw itch does not turn off the tire pressure warning light.■
The tire pressure warning light may come on due to natural causes
The tire pressure warning light may come on due to natural causes such as natural
air leaks or tire inflation pressure change s caused by temperature. In this case,
adjusting the tire inflation pressure will turn off the warning light (after a few min-
utes).

8785-2. Steps to take in an emergency
LX570_OM_OM60L96U_(U) CAUTION■
Avoiding battery fires or explosions
Observe the following precautions to prev ent accidentally igni ting the flammable
gas that may be emitted from the battery. ●
Make sure the jumper cable is connected to the correct terminal and that it is not
unintentionally in contact with any pa rt other than the intended terminal.●
Do not allow the jumper cables to come into contact with the “+” and “-” termi-
nals. ●
Do not allow open flame or use matches, cigarette lighters or smoke near the
battery.■
Battery precautions
The battery contains poisonou s and corrosive acidic electrolyte, while related parts
contain lead and lead compounds. Obse rve the following precautions when han-
dling the battery. ●
When working with the battery, always we ar safety glasses and take care not to
allow any battery fluids (acid) to come into contact with skin, clothing or the vehi-
cle body. ●
Do not lean over the battery. ●
In the event that battery fluid comes into contact with the skin or eyes, immedi-
ately wash the affected area with water and seek medical attention.
Place a wet sponge or cloth over the affe cted area until medi cal attention can be
received. ●
Always wash your hands after handling th e battery support, terminals, and other
battery-related parts. ●
Do not allow children near the battery.
NOTICE■
When handling jumper cables
Be careful that the jumper cables do not become tangled in the cooling fan or any
of the belts when connectin g or disconnecting them.

5
When trouble arises
8815-2. Steps to take in an emergency
LX570_OM_OM60L96U_(U) CAUTION■
To prevent an accident or injury when inspecting under the hood of your vehicle ●
If steam is seen coming from under the hood, do not open the hood until the
steam has subsided. The engi ne compartment may be very hot, causing serious
injury such as burns. ●
Keep hands and clothing (especially a tie, a scarf or a muffler) away from the fans
and belts. Failure to do so may cause the hands or clothing to be caught, resulting
in serious injury. ●
Do not loosen the radiator cap or the coolant reservoir cap while the engine and
radiator are hot.
Serious injury, such as bu rns, may result from hot coolant and steam released
under pressure.
NOTICE■
When adding engine coolant
Wait until the engine has cooled down before adding engine coolant.
When adding coolant, do so slowly. Adding cool coolant to a hot engine too quickly
can cause damage to the engine. ■
To prevent damage to the cooling system
Observe the following precautions: ●
Avoid contaminating the coolant with foreig n matter (such as sand or dust etc.).●
Do not use any coolant additive.