engine overheat Lexus GX460 2017 User Guide

348
GX 460 _O M_ OM6 0F 6 8U _(U )4-5. Using the driving support systems
■When the Crawl Control system is operated continuously
This may cause the brake actuator to overheat. In this case, the Crawl Control system will
stop operating, a buzzer will sound, the Crawl Control indicator will turn off after flashing
and the “TRAC OFF” will be shown on the multi-
information display. In this case, quickly
stop the vehicle in a safe place and give the actuator adequate time to cool off. Refrain
from using the system until the message goes off. (The vehicle can be driven normally
during this time.)
■If the automatic transmission system overheats
The system will cease operation, a buzzer w ill sound and a warning message will be dis-
played to alert the driver. Stop the vehicle in a safe place until the warning message turns
off. ( →P. 533)
■Sounds and vibrations caused by the Crawl Control system
●A sound may be heard from the engine compartment when the engine is started or just
after the vehicle begins to move. This sound does not indicate that a malfunction has
occurred in Crawl Control system.
●Either of the following conditions may occu r when the Crawl Control system is operat-
ing. None of these are indicators that a malfunction has occurred.
• Vibrations may be felt through the vehicle body and steering.
• A motor sound may be heard after the vehicle comes to a stop.
■If the slip indicator comes on...
It may indicate a malfunction in the system. Consult your Lexus dealer.
CAUTION
■When using Crawl Control
Do not rely solely on the Crawl Control. This function does not extend the vehicle’s
performance limitations. Always thoroughly check the road conditions, and drive
safely.
■These conditions may cause the system not to operate properly
When driving on the following surfaces, the system may not be able to maintain a fixed
low speed, which may result in an accident:
●Extremely steep inclines.
●Extremely uneven surfaces.
●Snow-covered roads, or other slippery surfaces.
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350
GX 460 _O M_ OM6 0F 6 8U _(U )4-5. Using the driving support systems
■Operating tips
The system will operate when the shift lever is
in a position other than P, however to make
effective use of the system it is recommended that the shift lever be shifted to 2 or 1 range
of S mode.
■If the four-wheel drive control switch is in H4
The system does not operate.
■When the downhill assist control system is operated continuously
This may cause the brake actuator to overheat . In this case, the downhill assist control
system will stop operating, a buzzer will sound and the downhill assist control system
indicator will start flashing, and the “TRAC OF F” will be shown on the multi-information
display. Refrain from using the system until the downhill assist control system indicator
stays on and the message goes off. (The vehicle can be driven normally during this time.)
■Sounds and vibrations caused by the downhill assist control system
●A sound may be heard from the engine compartment when the engine is started or just
after the vehicle begins to move. This sound does not indicate that a malfunction has
occurred in downhill assist control system.
●Either of the following conditions may occu r when the downhill assist control system is
operating. None of these are indicators that a malfunction has occurred.
• Vibrations may be felt through the vehicle body and steering.
• A motor sound may be heard after the vehicle comes to a stop.
■System malfunction
●The downhill assist control system indicator does not come on when the engine switch
is turned to IGNITION ON mode.
●The downhill assist control system indicator does not come on when the “DAC” switch
is pressed.
●The slip indicator comes on.
In the above cases, have your vehicle checked by your Lexus dealer.
CAUTION
■When using downhill assist control system
Do not rely overmuch on the downhill assi st control system. This function does not
extend the vehicle’s performance limitations . Always thoroughly check the road condi-
tions, and drive safely.
■The system may not operate on the following surfaces, which may lead to an accident
causing death or serious injury
●Slippery surfaces such as wet or muddy roads
●Icy surface
●Unpaved roads
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354
GX 460 _O M_ OM6 0F 6 8U _(U )4-5. Using the driving support systems
■Sounds and vibrations caused by the ABS/Multi Terrain ABS, brake assist, TRAC/
Active TRAC, VSC/Trailer Sway Control and hill-start assist control systems
●A sound may be heard from the engine compartment when the engine is started or just
after the vehicle begins to move. This sound does not indicate that a malfunction has
occurred in any of these systems.
●Any of the following conditions may occur when the above systems are operating.
None of these indicates that a malfunction has occurred.
• Vibrations may be felt through the vehicle body and steering.
• A motor sound may be heard after the vehicle comes to a stop.
• The brake pedal may pulsate slightly after the ABS/Multi Terrain ABS is activated.
• The brake pedal may move down slightly after the ABS/Multi Terrain ABS is acti-
vated.
■Reactivation of the TRAC or Active TRAC/VSC/Trailer Sway Control systems after
turning off the engine
Turning off the engine after turning off the TRAC or Active TRAC/VSC/Trailer Sway
Control systems will automatically re-enabled them.
■Reactivation of the TRAC or Active TRAC system linked to vehicle speed
When only the TRAC or Active TRAC system is turned off, the TRAC or Active TRAC
system will turn on when vehicle speed increases. However, when both TRAC or Active
TRAC and VSC/Trailer Sway Control systems ar e turned off, the systems will not turn on
even when vehicle speed increases.
■When the brake system operates continuously
The brake actuator may overheat. In this case, the TRAC or Active TRAC and hill-start
assist control systems will stop operating, a buzzer will sound and the “TRAC OFF” will
be shown on the multi-information display. Refrain from using the system until the mes-
sage goes off. (There is no proble m with continuing normal driving.)
■If the slip indicator comes on...
It may indicate a malfunction in the TRAC/Active TRAC, VSC/Trailer Sway Control or
hill-start assist control system. Consult your Lexus dealer.
■KDSS
Some difference of vehicle height between left and right side can appear. This does not
indicate a malfunction in the KDSS system. For more information, contact your Lexus
dealer.
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399
GX 460 _O M_ OM6 0F 6 8U _(U )5-1. Using the air conditio
ning system and defogger
5
Interior features
Heated steering wheel∗/seat heaters∗/seat
ventilators
∗
Turns the heated steering wheel on/off
The indicator light comes on when the
heated steering wheel is operating.
∗: If equipped
Heated steering wheel and seat heaters heat the side grips of the steering
wheel and seats. Seat ventilators maintain good airflow by blowing air from
the seats.
CAUTION
●Care should be taken to prevent injury if anyone in the following categories comes in
contact with the steering wheel and seats when the heater is on:
• Babies, small children, the elderly, the sick and the physically challenged
• Persons with sensitive skin
• Persons who are fatigued
• Persons who have taken alcohol or drugs that induce sleep (sleeping drugs, cold remedies, etc.)
●Observe the following precautions to prevent the minor burns or overheating:
• Do not cover the seat with a blanket or cushion when using the seat heater.
• Do not use seat heater more than necessary.
NOTICE
●Do not put heavy objects that have an uneven surface on the seat and do not stick
sharp objects (needles, nails, etc.) into the seat.
●To prevent battery discharge, do not use the functions when the engine is off.
Heated steering wheel (if equipped)
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509
GX 460 _O M_ OM6 0F 6 8U _(U )
7When trouble arises
7-1. Essential informationEmergency 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
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564
GX 460 _O M_ OM6 0F 6 8U _(U )7-2. Steps to take in an emergency
If your vehicle overheats
Stop the vehicle in a safe place and turn off the air conditioning system, and
then stop the engine.
If you see steam:
Carefully lift the hood after the steam subsides.
If you do not see steam:
Carefully lift the hood.
After the engine has cooled down sufficiently, inspect the hoses and radiator
core (radiator) for any leaks.
Radiator
Cooling fans
If a large amount of coolant leaks,
immediately contact your Lexus
dealer.
The following may indicate that your vehicle is overheating.
●The needle of the engine coolant temperature gauge ( →P. 8 3 ) e n t e r s t h e
red zone or a loss of engine power is experienced. (For example, the vehicle
speed does not increase.)
●Steam is coming from under the hood.
Correction procedures
1
2
3
1
2
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628Alphabetical index
GX 460 _O M_ OM6 0F 6 8U _(U )
Condenser .............................................. 469
Console box ........................................... 406
Cool box ....................................................419
Cooling system ..................................... 467Engine overheating.......................... 564
Conversation mirror ........................... 422
Crawl Control ....................................... 346
Cruise control
Cruise control...................................... 224
Dynamic radar crui se control...... 227
Cup holders ............................................408
Curtain shield airbags ........................... 36
Current fuel consumption ................... 87
Customizable features ....................... 594
DAC (Downhill Assist Control system)................................................... 349
Daytime running light system .......... 204
Defogger Front windshield ................................ 390
Outside rear view mirrors .............. 391
Rear window ......................................... 391
Differential............................................... 575
Dimension ............................................... 570
Display
Multi-information display ..................86
Trip information ..................................... 87
Warning message ............................ 528
Do-it-yourself maintenance ............. 459
Doors............................................................ 98 Back door ........................................... 105
Door glasses ......................................... 150
Door lock ..................................................98
Open door warning light............... 522
Outside rear view mirrors ...............147
Rear door child-protector................101 Driver’s seat position memory..........135
Driving ........................................................158
AVS switch ............................................. 341
Break-in tips ...........................................159
Correct posture .................................... 28
Procedures ............................................ 158
Winter drive tips .................................377
Dynamic radar cruise control .......... 227
Eco Driving Indicator ............................ 90
EDR (Event data recorder)................... 10
Electronic key ............................................94 Battery-saving function ......................117
If the electronic key does not operate properly ........................... 558
Replacing the battery ...................... 492
Emergency, in case of
If the electronic key does not operate properly ........................... 558
If the engine will not start ...............556
If the vehicle has discharged battery ..........................561
If the warning buzzer
sounds ................................................. 520
If the warning light turns on .......... 520
If you have a flat tire .......................... 542
If you lose your keys......................... 622
If you think something is wrong.................................................... 518
If your vehicle becomes stuck...................................................... 567
If your vehicle needs to be towed .....................................................512
If your vehicle overheats ................564
D
E
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629Alphabetical index
GX 460 _O M_ OM6 0F 6 8U _(U )
Emergency flashers .............................. 510
EngineAccessory mode................................. 190
Compartment ......................................463
Hood ........................................................ 462
How to start the engine ................... 189
Identification number ....................... 572
If the engine will not start............... 556
Ignition switch (engine switch)..... 189
Overheating ........................................ 564
Engine compartment cover ............. 464
Engine coolant....................................... 467 Capacity .................................................574
Checking................................................ 467
Preparing and checking before winter .................................... 377
Engine immobilizer system ..................72
Engine oil ................................................. 465 Capacity ................................................. 572
Checking............................................... 465
Preparing and checking before winter .................................... 377
Engine switch .......................................... 189
Engine switch light ............................... 402
Event data recorder (EDR) ...................10 Flat tire .......................................................542
Floor mats....................................................26
Fluid
Automatic transmission .................. 576
Brake........................................................ 577
Steering .................................................. 578
Washer ................................................... 475
Fog lights.................................................... 210 Switch ................................................... 210
Four-wheel drive system....................342
Front passenger occupant classification system ........................... 48
Front passenger’s seat belt
reminder light ......................................522
Front seats................................................. 122
Adjustment.............................................. 122
Cleaning................................................. 449
Correct driving posture .................... 28
Driving position memory.................135
Head restraints .....................................140
Seat heaters ......................................... 400
Seat position memory .......................135
Front turn signal lights ........................ 200
Replacing light bulbs .......................503
Turn signal lever .................................200
Wattage ................................................. 579F
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632Alphabetical index
GX 460 _O M_ OM6 0F 6 8U _(U )
Meter ............................................................ 83Indicators...................................................78
Instrument panel light control .........84
Meters.........................................................83
Multi-information display ..................86
Warning lights ........................................ 78
Micro dust and pollen filter ................391
Mirrors Inside rear view mirror ..................... 145
Outside rear view mirror defoggers ............................................ 391
Outside rear view mirrors ...............147
Vanity mirrors ........................................421
Moon roof................................................. 153
Jam protection function ................... 154
Operation ............................................... 153
MP3 disc
*
Multi-information display ..................... 86
Switching the display........................... 87
Trip information ..................................... 87
Multi-terrain Monitor ...........................313
Multi-terrain Select..............................308
Navigation system
*
Odometer .................................................. 83
Off-road precautions ......................... 380
Oil Engine oil ............................................... 572
Front differential oil ........................... 575
Rear differential oil ............................ 575
Transfer................................................... 576
Opener Back door............................................... 106
Fuel filler door.......................................222
Hood........................................................ 462
Outside rear view mirrors.................. 147 Adjusting and folding ........................ 147
Blind Spot Monitor ........................... 357
Outside rear view mirror
defoggers.............................................391
Outside temperature display ............. 90
Overheating, Engine .......................... 564
Parking assist sensors
(intuitive parking assist)...................244
Parking assist monitor .........................263
Parking brake .......................................... 201 Operation................................................201
Parking brake engaged warning buzzer ...............................530
Personal lights ....................................... 402 Switch ......................................................403
Wattage ................................................. 579
N
O
P
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