engine overheat LEXUS LX570 2016 User Guide

312
LX570_OM_OM60N01U_(U) 4-5. Using the driving support systems■
Automatic system cancelation 
Crawl Control
In the following situations, th e buzzer will sound intermittently and Crawl Control will be
canceled automatically. In this event, the Crawl Control indicator will flash and then go
off, the Turn Assist indicator will go off (if the Turn Assist function is in use), and a message
stating that Crawl Control has been turned of f will be displayed on the multi-information
display for several seconds. ●
When the shift lever is moved to P or N. ●
When the four-wheel drive control switch is in H4. ●
When the driver’s door is opened. 
Turn Assist function
When the center differential is locked, the buzzer will sound intermittently and the Turn
Assist function will be canceled automatically. In this event, the Turn Assist indicator will
go off, and a message stating that the Turn Assist function has been turned off will be dis-
played on the multi-information display for several seconds. ■
Function limitations 
Crawl Control ●
In the following situations, brake control can be used to drive downhill at a constant
speed. However, engine control is not availa ble when driving uphill at a constant speed.
• When switched to second start mode. ●
In the following situation, engine control an d brake control will stop temporarily. In this
event, the Crawl Control indicator will flash.
• When the vehicle speed exceeds approximately 15 mph (25 km/h).
Turn Assist function
In the following situations, the Turn Assist func tion will stop temporarily. In this event, the
Turn Assist indicator will flash. ●
When the vehicle speed exceeds approximately 6 mph (10 km/h). ●
When the shift lever is moved to R. ■
When the Crawl Control system is operated continuously ●
If Crawl Control is used continuously for a long time, the buzzer will sound, a malfunc-
tion notification will be displayed on the multi-information display, the Crawl Control
indicator will go off, and Crawl Control will be temporarily inoperable as a result of the
brake system overheating. In this event, stop the vehicle immediately in a safe place,
and allow the brake system to cool down sufficiently until the TRAC OFF indicator
goes off. (In the meantime, normal driving is possible.) ●
If Crawl Control is used continuously for a long time, the buzzer will sound, the system
will be temporarily canceled, and a malfunct ion notification will be displayed on the
multi-information display as a result of th e automatic transmission system overheating.
Stop the vehicle in a safe place until the display goes off. ■
When depressing the accelerator pedal while the Crawl Control is operating
Multi-terrain Select operates in AUTO mode. (  P. 3 1 5 )

LX570_OM_OM60N01U_(U) 3814-5. Using the driving support systems
4
Driving ■
Automatic Active TRAC reactivation
If only the Active TRAC system is turned off, the Active TRAC system will turn on when
vehicle speed increases. ■
Automatic Active TRAC, VSC and Trailer Sway Control reactivation
If the Active TRAC, VSC and Trailer Sway Control are turned off, the systems will not
turn on even when vehicle speed increases. ■
If the brake system overheats
The brake system may overheat. In this cas e, a buzzer will sound, and the TRAC OFF
indicator will flash, and Active TRAC and hill- start assist control will be temporarily inop-
erable. In this event, stop the vehicle immediately in a safe place, and allow the brake sys-
tem to cool down sufficiently until the TR AC OFF indicator goes off. (There is no
problem with continuing normal driving.) ■
Sounds and vibrations caused by the Mult i Terrain ABS, brake assist, Active TRAC,
VSC, Trailer Sway Control, hill-start assist control and VGRS ●
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 condit ions 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 af ter the Multi Terrain ABS is activated.
• The brake pedal may move down slightly after the Multi Terrain ABS is activated. ■
Hill-start assist cont rol is operational when●
The shift lever is in D or S. ●
The brake pedal is not depressed. ■
VGRS is disabled in the following situations ●
During stopping or the steering wheel has been moved for a long time while driving at
lower speeds. ●
After the engine is restarted at less than -22°F (-30°C). ●
If you disconnect the battery with the steeri ng wheel turned, the center position of the
steering wheel could be slightly and tempor ary changed. To initialize the VGRS, drive
for a short while.

415
LX570_OM_OM60N01U_(U) 5-3. Using the air conditio ning system and defogger
5
Interior features
Heated steering wheel 
/seat heaters/seat
ventilators 
 : If equippedHeated steering wheel and seat heater s heat the side grips of the steering
wheel and seats. Seat ventilators maintain good airflow by blowing air from
the seats. WA R N I N G ●
Care should be taken to prevent injury if anyone in the following categories comes in
contact with the steering wheel an d 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 (s leeping 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.

513
LX570_OM_OM60N01U_(U) 7When trouble arises 7-1. Essential information
Emergency flashers ................... 514
If your vehicle has to be
stopped in an emergency ..... 515
7-2. Steps to take in an emergency
If your vehicle needs
to be towed ................................. 516
If you think something is
wrong ........................................... 522
Fuel pump shut off system ...... 523
If a warning light turns
on or a warning buzzer
sounds.......................................... 524
If a warning message is
displayed..................................... 532
If you have a flat tire................... 536
If the engine will not start ........ 547
If the shift lever cannot be
shifted from P............................ 549
If the electronic key does
not operate properly .............550
If the vehicle battery is
discharged ................................. 553
If your vehicle overheats ......... 556
If the vehicle becomes
stuck ............................................. 559

556
LX570_OM_OM60N01U_(U) 7-2. Steps to take in an emergency
If your vehicle overheats Stop the vehicle in a safe place and tu rn 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 8 ) 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

619Alphabetical index
LX570_OM_OM60N01U_(U) Coolant..................................................... 566
Capacity ................................................ 566
Checking................................................478
Preparing and checking
before winter ................................... 384
Cooling system
Engine overheating.......................... 556
Crawl Control ....................................... 309
Cruise control
Cruise control..................................... 283
Dynamic radar cruise control
with full-speed range ...................... 271
Cup holders ............................................ 425
Curtain shield airbags ........................... 38
Customizable features .......................585
Daytime running light system .......... 222
Defogger
Outside rear view mirrors .............407
Rear window ........................................407
Windshield ............................................407
Differential ............................................... 567
Dimension ............................................... 562
Dinghy towing........................................ 204 Display
Crawl Control.....................................309
Drive information .................................. 94
Dynamic radar cruise control
with full-speed range ..................... 271
Fuel consumption information ..... 106
Head-up display ................................. 100
Intuitive parking assist...................... 290
LDA (Lane Departure Alert)....... 266
Multi-information display.................... 91
Multi-terrain Monitor ........................ 318
Multi-terrain Select ............................. 314
Warning messages .......................... 532
Do-it-yourself maintenance..............470
Door courtesy lights
Location ...................................................419
Wattage ................................................. 570
Doors
Automatic door locking and
unlocking system............................... 119
Back door................................................ 122
Door glasses ..........................................165
Door lock.................................................. 115
Open door warning buzzer ........ 526
Open door warning light .............. 526
Outside rear view mirrors .............. 162
Rear door child-protectors ............. 118
Side doors ................................................ 115D
* : Refer to
the “NAVIGATION SYSTEM OWNER’S MANUAL”.

620 Alphabetical index
LX570_OM_OM60N01U_(U) Drive information .................................... 94
Driver’s seat belt reminder light ..... 526
Driver’s seat position memory ........... 151
Driving......................................................... 174
Break-in tips .......................................... 175
Correct posture..................................... 28
Driving in the rain ................................ 175
Driving mode select switch ......... 286
Off-road precautions.......................387
Procedures .............................................174
Winter drive tips ................................ 384
Driving position memory...................... 151
Driving position memory .................. 151
Memory recall function.................... 152
Power easy access system .............. 151
DVD player
* Dynamic radar cruise control
with full-speed range
Function .................................................... 271
Eco Driving Indicator Light ................. 87
EDR (Event data recorder) ...................10
Electronic key ........................................... 110
Battery-saving function .................... 134
If the electronic key does not
operate properly............................ 550
Replacing the battery ...................... 503 Emergency, in case of
If a warning buzzer sounds .......... 524
If a warning light turns on .............. 524
If a warning message is
displayed ............................................ 532
If the electronic key does not
operate properly ........................... 550
If the engine will not start ............... 547
If the shift lever cannot be
shifted from P ................................... 549
If the vehicle battery is
discharged.........................................553
If you have a flat tire ..........................536
If you lose your keys.................... 112, 114
If you think something is
wrong................................................... 522
If your vehicle becomes stuck.....559
If your vehicle has to be stopped
in an emergency.............................. 515
If your vehicle needs to be
towed .....................................................516
If your vehicle overheats ................556
Emergency flashers .............................. 514E

621Alphabetical index
LX570_OM_OM60N01U_(U) Engine
Accessory mode............................... 206
Air cleaner ...............................................471
Compartment ...................................... 473
Engine switch ...................................... 205
Exhaust gas precautions ................... 75
Hood ........................................................ 472
How to start the engine ................. 205
Identification number ...................... 563
If the engine will not start................ 547
If your vehicle has to be
stopped in an emergency ........... 515
Ignition switch (engine
switch) ................................................. 205
Overheating ........................................ 556
Engine compartment cover ............. 474
Engine coolant....................................... 478
Capacity ................................................ 566
Checking................................................478
Preparing and checking
before winter ................................... 384
Engine coolant temperature
gauge ........................................................ 88
Engine immobilizer system ..................76
Engine oil ................................................. 475
Capacity ................................................ 564
Checking................................................475
Preparing and checking
before winter ................................... 384 Engine switch (ignition switch) ....... 205
Engine switch light
(ignition switch light)......................... 419
Event data recorder (EDR)................... 10
Exhaust gas precautions ....................... 75
First-aid kit holder ................................ 430
Flat tire ...................................................... 536
Floor mats....................................................26
Fluid
Automatic transmission .................. 567
Brake....................................................... 568
Steering ................................................. 568
Washer ...................................................485
Fog lights...................................................229
Replacing light bulbs ........................ 510
Switch ...................................................... 229
Footwell lights .......................................... 419
Four-wheel AHC (Active Height
Control Suspension) ........................ 297
Easy access mode ............................ 299
Disabling the height control ........ 300
Selecting vehicle height.................. 297
Four-wheel drive system
Center differential lock/unlock ..306
Four-wheel drive control
switch ...................................................305
Warning light ....................................... 526
Front automatic air conditioning
system ...................................................... 401
Front doors ................................................ 115 F
* : Refer to
the “NAVIGATION SYSTEM OWNER’S MANUAL”.

625Alphabetical index
LX570_OM_OM60N01U_(U) Multi-information display .......................91
Crawl Control .................................... 309
Display contents ......................................91
Drive information .................................. 94
Dynamic radar cruise control
with full-speed range ...................... 271
Fuel consumption information ..... 106
Intuitive parking assist ..................... 290
Language .............................................. 595
LDA (Lane Departure Alert) .......266
Multi-information display ....................91
Switching the display........................... 93
Multi terrain ABS.................................. 379
Multi-terrain Monitor .......................... 318
Multi-terrain Select................................314
Navigation system
*Noise from under vehicle ....................... 8
Odometer .................................................. 89
Off road precautions .......................... 387
Oil
Engine oil............................................... 564
Front differential oil............................567
Rear differential oil .............................567
Transfer oil ............................................ 568
Opener
Back door ................................................123
Fuel filler door ......................................240
Hood ........................................................ 472 Outside rear view mirrors .................. 162
Adjusting and folding ........................ 162
Blind Spot Monitor ........................... 365
Driving position memory.................. 151
Linked mirror function when
reversing...............................................163
Mirror position memory ................... 151
Outside rear view mirror
defoggers........................................... 407
Outside temperature
display ............................................. 95, 102
Overheating, Engine .......................... 556
Paddle shift switches............................. 212
Panic mode .................................................. 111
Parking assist sensors
(Intuitive parking assist).................. 289
Parking brake .......................................... 217
Operation................................................ 217
Parking brake engaged
warning buzzer ............................... 527
Parking lights ......................................... 220
Light switch........................................... 220
Replacing light bulbs ........................ 510
PCS (Pre-Collision system) ............ 250
Enabling/disabling the system.... 254
Function ..................................................250
Warning light ....................................... 525N
O P
* : Refer to
the “NAVIGATION SYSTEM OWNER’S MANUAL”.