2018 LEXUS LX570 warning light

LX570_OM_OM60Q78U_(U) 4936-3. Do-it-yourself maintenance
6
Maintenance and care WARNING ■
Tire pressure warning system operation
The tire pressure warning system may not pr ovide warning immediat ely 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 damage to parts of the drive train, as well as dangerous han-
dling characteristics, which may lead to an accident resu lting in death or serious injury.●
Do not mix tires of different makes, models or tread patterns.
Also, do not mix tires of remarkably different treadwear. ●
Do not use tire sizes other than those recommended by Lexus. ●
Do not mix differently constructed tires (radial, bias-belted or bias-ply tires). ●
Do not mix summer, all season and snow tires. ●
Do not use tires that have be en 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 operate the tire pressure warning reset switch without first adjusting the tire
inflation pressure to the spec ified level. Otherwis e, the tire pressure warning light may
not come on even if the tire inflation pressu re is low, or it may come on when the tire
inflation pressure is actually normal.

LX570_OM_OM60Q78U_(U) 5076-3. Do-it-yourself maintenance
6
Maintenance and care ■
After a fuse is replaced ●
If the lights do not turn on even after the fuse has been replaced, a bulb may need
replacement. ( → P. 508)●
If the replaced fuse blows again, have th e vehicle inspected by your Lexus dealer.■
If there is an overload in a circuit
The fuses are designed to blow, protec ting the wiring ha rness from damage.
WARNING ■
To prevent system breakdowns and vehicle fire
Observe the following precautions.
Failure to do so may cause damage to th e vehicle, and possibly a fire or injury.●
Never use a fuse of a higher amperage rati ng than indicated, or use any other object
in place of a fuse. ●
Always use a genuine Lexus fuse or equivalent.
Never replace a fuse with a wi re, even as a temporary fix.●
Do not modify the fuses or the fuse boxes.
NOTICE ■
Before replacing fuses
Have the cause of electrical overload dete rmined and repaired by your Lexus dealer,
as soon as possible.

508
LX570_OM_OM60Q78U_(U) 6-3. Do-it-yourself maintenance
Light bulbs ■
LED lights
If any of the lights listed below has burnt out, have it replaced by your Lexus dealer.●
Headlights ●
Parking lights/dayti me running lights●
Front side marker lights ●
Fog lights ●
Front turn signal lights ●
Side turn signal lights ●
Outer foot lights ●
Rear turn signal lights ●
High mounted stoplight ●
Stop/tail lights ●
License plate lights ●
Stop lights ●
Back-up lights ●
Rear side marker lights ●
Running board light ■
Condensation build-up on the inside of the lens
Temporary condensation build-up on the inside of the headlight lens does not indicate a
malfunction. Contact your Lexus dealer for mo re information in the following situations: ●
Large drops of water are built up on the inside of the lens. ●
Water has built up inside the headlight.If any lights burn out, have it replaced by your Lexus dealer.
WARNING ■
Handling lights
Do not touch the lights while they are on or immediately after they have been turned
off. Doing so may result in burns.

509
LX570_OM_OM60Q78U_(U) 7When trouble arises 7-1. Essential information
Emergency flashers ................... 510
If your vehicle has to be
stopped in an emergency....... 511
7-2. Steps to take in an emergency
If your vehicle needs
to be towed................................. 512
If you think something is
wrong ............................................ 518
Fuel pump shut off system ....... 519
If a warning light turns
on or a warning buzzer
sounds..........................................520
If a warning message is
displayed.....................................528
If you have a flat tire .................. 532
If the engine will not start ........ 544
If the electronic key does
not operate properly ............. 546
If the vehicle battery is
discharged ................................. 549
If your vehicle overheats ......... 552
If the vehicle becomes
stuck .............................................555

520
LX570_OM_OM60Q78U_(U) 7-2. Steps to take in an emergency
If a warning light turns on or a warning buzzer
sounds Calmly perform the following actions if any of the warning lights comes on or
flashes. If a light comes on or flashes, but then goes 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.
Warning light and warning buzzer list Warning light Warning light/Details/Actions(U.S.A.)
(Canada)
Brake system warning light (warning buzzer)
* 1
Indicates that:
• The brake fluid level is low; or
• The brake system is malfunctioning.
→ Immediately stop the vehicle in a safe place and contact your
Lexus dealer. Continuing to drive the vehicle may be dangerous.
Charging system warning light
Indicates a malfunction in the vehicle’s charging system
→ Immediately stop the vehicle in a safe place and contact your
Lexus dealer. (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
→ Have the vehicle inspected by your Lexus dealer immediately.
SRS warning light
Indicates a malfunction in:
• The SRS airbag system; or
• The front passenger occupant classification system; or
• The seat belt pretensioner system
→ Have the vehicle inspected by your Lexus dealer immediately. (U.S.A.)
(Canada)
ABS warning light
Indicates a malfunction in:
• The ABS; or
• The brake assist system
→ Have the vehicle inspected by your Lexus dealer immediately.

5217-2. Steps to take in an emergency
LX570_OM_OM60Q78U_(U) 7
When trouble arises (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. 260,
528)
→ Follow the instructions displaye d on the multi-information dis-
play. ( → P. 260, 528)
If the PCS (Pre-Collision System ) or VSC (Vehicle Stability Con-
trol) system is disabled, the PC S warning light will illuminate.
→ P. 260
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

522 7-2. Steps to take in an emergency
LX570_OM_OM60Q78U_(U) (Flashes)
Low speed four-wheel drive indicator light
Indicates a malfunction in the four -wheel drive system if the light
continues flashing. ( → P. 303)
→ Have the vehicle inspected by your Lexus dealer immediately. (Flashes)
Center differential lock indicator light
Indicates a malfunction in the four -wheel drive system if the light
continues flashing. ( → P. 303)
→ Have the vehicle inspected by your Lexus dealer immediately.
Open door warning light (warning buzzer)
* 2
Indicates that a door is not fully closed
→ Check that all the doors are closed.
Low fuel level warning light
Indicates that remaining fuel is approximately 4.0 gal. (15.0 L,
3.3 Imp.gal.) or less
→ Refuel the vehicle.
Driver’s seat belt reminder light (warning buzzer)
* 3
Warns the driver to fast en his/her seat belt.
→ Fasten the seat belt. (On the center panel)
Front passenger’s seat belt re minder light (warning buzzer)
* 3
Warns the front passenger to fasten his/her seat belt.
→ Fasten the seat belt.
Master warning light
A buzzer sounds and the warning light comes on or flashes to indi-
cate that the master warning sy stem has detected a malfunction.
→ P. 528
Tire pressure warning light
Indicates that:
•Flat tire
• Natural causes
• The tire pressure warnin g system is malfunctioning
→ Immediately stop the vehicle in a safe place.
Handling method ( → P. 525)
Power steering system warning light (warning buzzer)
Indicates a malfunction in the power steering system
→ Have the vehicle inspected by your Lexus dealer immediately. (Flashes)
(U.S.A.)
(Flashes)
(Canada)
Parking brake indicator
Indicates that the parking brake is not fully engaged or released
→ Operate the parking brake switch once again.
This light comes on when the parking brake is not released.
* 4
If the
light turns off after the parking brak e is fully released, the system is
operating normally.Warning light Warning light/Details/Actions

5237-2. Steps to take in an emergency
LX570_OM_OM60Q78U_(U) 7
When trouble arises * 1
: Brake system warning buzzer:
The buzzer sounds to indicate that the brake fluid level is low (with the vehicle
reached a speed of 3 mph [5 km/h]).
* 2
: 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 3mph [5 km/h]).
* 3
: 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 the seat belt is still unfast ened after 24 seconds, the buzzer will sound
intermittently for 10 seconds. Then, if the se at belt is still unfa stened, the buzzer will
sound in a different tone for 20 more seconds.
Front passenger’s seat belt buzzer:
The front passenger’s seat belt buzzer soun ds to alert the front passenger that his or
her seat belt is not fastened. The buzzer so unds once if the vehicle reaches a speed of
12 mph (20 km/h). If the seat belt is still unfastened after 24 se conds, the buzzer will
sound intermittently for 10 se conds. Then, if the seat belt is still unfastened, the buzzer
will sound in a different to ne for 20 more seconds.
* 4
: Parking brake engaged warning buzzer:
A buzzer sounds to indicate that the par king brake is still engaged (with the vehicle
having reached a speed of 3 mph [5 km/h]). Brake system warning light
Indicates a malfunction in the electric parking brake system
→ Have the vehicle inspected by your Lexus dealer immediately.Warning light Warning light/Details/Actions