2018 Lexus GX460 check engine light

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GX460_OM_OM60Q09U_(U)
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6-1. Maintenance and care Cleaning and protecting the vehicle exterior ................ 446
Cleaning and protecting the vehicle interior.................. 449
6-2. Maintenance Maintenance requirements ............................ 452
General mainte nance.............. 455
Emission inspection and maintenance (I/M)
programs.................................... 458
6-3. Do-it-yourself maintenance Do-it-yourself service precautions................................ 459
Hood ............................................... 462
Engine compartment ............... 463
Tires ................................................. 476
Tire inflation pressure .............. 483
Wheels ........................................... 487
Air conditioning filter ............... 489
Electronic key battery................491
Checking and replacing fuses.............................................. 493
Headlight aim .............................. 496
Light bulbs .................................... 498 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 .................. 542
If the engine will not start ........ 556
If the electronic key does not operate properly .............558
If the vehicle battery is discharged...................................561
If your vehicle overheats......... 564
If the vehicle becomes stuck ............................................. 567
6Maintenance and care7When trouble arises

15Pictorial index
GX460_OM_OM60Q09U_(U)
Windshield wipers . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . P. 213
Precautions against winter season . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . P. 377
To prevent freezing (windshield wiper de-icer
*) . . . . . . . . . . . . . . . . . . . . . . . . P. 391
Precautions against car wash . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . P. 447
Fuel filler door . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . P. 221
Refueling method . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . P. 221
Fuel type/fuel tank capacity . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . P. 572
Tires . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . P. 476
Tire size/inflation pressure . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . P. 578
Winter tires/tire chain . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . P. 37 7
Checking/rotation/tire pressure warning system . . . . . . . . . . . . . . . . . . . . . . P. 476
Coping with flat tires . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . P. 542
Hood . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .P. 462
Opening. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . P. 462
Engine oil . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . P. 572
Coping with overheat. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . P. 564
Camera*. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .P. 254, 264
Headlights . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . P. 202
Parking lights/daytime running lights. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . P. 202
Fog lights
* . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . P. 211
Turn signal lights . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . P. 20 0
Stop/tail lights
Hill-start assist control*. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . P. 352
Downhill assist control system
*. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . P. 349
License plate lights . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . P. 202
Back-up lights
Shifting the shift lever to R . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . P. 194
Side marker lights . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . P. 202
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Light bulbs of the exte rior lights for driving
(Replacing method: P. 498, Watts: P. 579)
*: If equipped
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711-1. For safe use
GX460_OM_OM60Q09U_(U)
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For safety and security
Exhaust gas precautions
Harmful substance to the human body is included in exhaust gases if inhaled.
CAUTION
Exhaust gases include harmful carbon monoxi de (CO), which is colorless and odorless.
Observe the following precautions.
Failure to do so may cause exhaust gases enter the vehicle and may lead to an accident
caused by light-headedness, or may lead to death or a serious health hazard.
■Important points while driving
●Keep the back door closed.
●If you smell exhaust gases in the vehicle even when the back door is closed, open the
windows and have the vehicle inspected at your Lexus dealer as soon as possible.
■When parking
●If the vehicle is in a poorly ventilated area or a closed area, such as a garage, stop the
engine.
●Do not leave the vehicle with the engine running for a long time.
If such a situation cannot be avoided, park the vehicle in an open space and ensure
that exhaust fumes do not enter the vehicle interior.
●Do not leave the engine running in an area with snow build-up, or where it is snowing.
If snowbanks build up around the vehicle while the engine is running, exhaust gases
may collect and enter the vehicle.
■Exhaust pipe
The exhaust system needs to be checked periodically. If there is a hole or crack caused
by corrosion, damage to a joint or abnormal exhaust noise, be sure to have the vehicle
inspected and repaired by your Lexus dealer.

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GX460_OM_OM60Q09U_(U)2. Instrument cluster
*1: These lights turn on when the engine switch is turned to IGNITION ON mode to
indicate that a system check is being perfor med. They will turn off after the engine is
on, or after a few seconds. There may be a ma lfunction in a system if the lights do not
turn on, or turn off. Have the vehi cle inspected by your Lexus dealer.
*2: The light flashes to indicate a malfunction.
The indicators inform the driver of the op erating state of the vehicle’s various sys-
tems.
Indicators
Turn signal indicator
( → P. 200) “SET” indicator
(
→ P. 225, 228)
(U.S.A.)
Headlight indicator
(→ P. 202)
(if equipped)
Dynamic radar cruise
control indicator
(→ P. 228)
(Canada)
Tail light indicator
(→ P. 202)
(if equipped)
“LDA” (Lane Departure
Alert) indicator ( →P. 239)
Headlight high beam
indicator ( →P. 203)
*1, 2
Slip indicator ( →P. 352)
(if equipped)
Automatic High Beam
indicator ( →P. 206)*1VSC OFF indicator
(→ P. 353)
(if equipped)
Fog light indicator
(→ P. 211)
(if equipped)
Multi-terrain Select
indicator ( →P. 308)
*1
Eco Driving Indicator
Light ( →P. 90)
*1
(if equipped)
Crawl Control indicator
(→ P. 346)
Cruise control indicator
( → P. 225, 228)
*1
(if equipped)
Downhill assist control
system indicator
(→ P. 349)

GX460_OM_OM60Q09U_(U)
812. Instrument cluster
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Instrument cluster
*1: These lights turn on when the engine switch is turned to IGNITION ON mode toindicate that a system check is being perfor med. They will turn off after the engine is
on, or after a few seconds. There may be a ma lfunction in a system if the lights do not
turn on, or turn off. Have the vehi cle inspected by your Lexus dealer.
*2: The light flashes to indicate that the system is operating.
*3: The light turns on when the system is turn ed off. The light flashes quickly to indicate
that the system is operating.
*4: In order to confirm operation, the BSM outside rear view mirror indicators illumi- nate in the following situations:
• When the engine switch is turned to IGNITION ON mode while the system is set to on.
• When the system is set to on while the engine switch is in IGNITION ON mode.
If the system is functioning correctly, th e BSM outside rear view mirror indicators
will turn off after a few seconds.
If the BSM outside rear view mirror indicators do not illuminate or do not turn off,
there may be a malfunction with the system.
If this occurs, have the vehicle inspected by your Lexus dealer.
*5: This light illuminates on the outside rear view mirrors.
*6: This light illuminates on the center panel.“2nd STRT” indicator
(
→ P. 195)
(if equipped)
“BSM” (Blind Spot
Monitor) indicator
(→ P. 357)
Low speed four-wheel
drive indicator light
( → P. 342)
*4, 5
(if equipped)
BSM (Blind Spot Monitor)
outside rear view mirror
indicators ( →P. 357)
Center differential lock
indicator ( →P. 343)
*1, 6
(U.S.A.)
“AIR BAG ON/
OFF” indicator
(→ P. 48)
(if equipped)
Intuitive parking assist
indicator ( →P. 245)*1, 6
(Canada)
“AIR BAG ON/
OFF” indicator
(→ P. 48)
*1, 3
(if equipped)
“PCS” warning light
(→ P. 368)

GX460_OM_OM60Q09U_(U)
852. Instrument cluster
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Instrument cluster
■The meters and display illuminate when
The engine switch is in IGNITION ON mode.
■Instrument cluster brightness adjustment
The instrument cluster brightness levels when the tail lights are on and off can be
adjusted.
■The brightness of the in strument cluster lights
When the tail lights are on, the brightness will change. Ho wever, when the surroundings
are bright (daytime, etc.) turn ing on the tail lights will not change the instrument cluster
brightness.
In addition, the brightness of the instrument cluster lights is automatically adjusted based
on the light sensor detecting ho w bright the surroundings are.
■When disconnecting and reconnecting battery terminals
The trip meter data will be reset.
If the trip meter was displayed last, the od ometer will be displayed after resetting.
■Customization
Setting of sensitivity of the ambient light sensor used for dimming the meter lights can be
changed. (Customizable features: →P. 594)
NOTICE
■To prevent damage to the engine and its components
●Do not let the indicator needle of the tachometer enter the red zone, which indicates
the maximum engine speed.
●The engine may be overheating if the engine coolant temperature gauge is in the red
zone (H). In this case, immediately stop the vehicle in a safe place, and check the
engine after it has cooled completely. (→ P. 564)

GX460_OM_OM60Q09U_(U)
1373-3. Adjusting the seats
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Operation of each component
■To stop the position recall operation part-way through
Perform any of the following:
●Press the “SET” button.
●Press button “1” or “2”.
●Operate any of the seat adjustment switches (only cancels seat position recall).
●Operate the tilt and telescopic steering control switch (only cancels steering wheel
position recall).
■Seat positions that can be memorized ( → P. 122)
The adjusted positions other than the position adjusted by lumbar support switch can be
recorded.
■Operating the driving position memory after turning the engine switch off
Recorded seat positions can be activated up to 180 seconds after the driver’s door is
opened and another 60 seconds after it is closed again.
■In order to correctly use the driving position memory function
If a seat position is already in the furthest po ssible position and the seat is operated in the
same direction, the recorded position may be slightly different when it is recalled.
Each electronic key can be registered to recall your preferred driving position.
■Registering procedure
Record your driving position to button “1” or “2” before performing the follow-
ing:
Carry only the key you want to regist er, and then close the driver’s door.
If 2 or more keys are in the vehicle, the driving position cannot be recorded
properly.
Check that the shift lever is in P.
Turn the engine switch to IGNITION ON mode.
Recall the driving position that you want to record.
Memory recall function
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GX460_OM_OM60Q09U_(U)3-5. Opening, closing the windows and moon roof
■The moon roof can be operated when
The engine switch is in IGNITION ON mode.
■Operating the moon roof after turning the engine off
The moon roof can be operated for approximat
ely 45 seconds after the engine switch is
turned to ACCESSORY mode or turned off. It cannot, however, be operated once either
front door is opened.
■Jam protection function
If an object is detected between the moon r oof and the frame while the moon roof is clos-
ing or tilting down, travel is stopped and the moon roof opens slightly.
■Sunshade
The sunshade can be opened and closed manually. However, the sunshade will open
automatically when the moon roof is opened.
■Door lock linked moon roof operation
●The moon roof can be opened and closed using the mechanical key. ( →P. 558)
●The moon roof can be opened usin g the wireless remote control. (→P. 98)
■Moon roof open reminder function
An alarm will sound and a message will be shown on the multi-information display when
the driver’s door is opened with the moon r oof not fully closed and the engine switch off.
■When the moon roof does not close normally
Perform the following procedure:
●If the moon roof closes but then re-opens slightly
Stop the vehicle.
Press and hold “ ∨” on the .
*1
The moon roof will close, re-open an d pause for approximately 10 seconds.*2 Then
it will close again, tilt up and pause for appr oximately 1 second. Finally, it will tilt down,
open and close.
Check to make sure that the moon roof is completely closed and then release the
switch.
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