2015 Lexus GS350 engine overheat

209
GS350_OM_OM30E15U_(U)4-3. Operating the lights and wipers
4
Driving
Headlight cleaner switch
Press the switch to clean the head-
lights.
■The headlight cleaners can be operated when
The engine switch is in IGNITION ON mode and the headlight switch is turned on.
■Windshield washer linked operation
When the windshield washer is operated with the engine switch in IGNITION ON
mode and the headlights on, the headlight cleaners will operate once. ( P. 2 0 2 )
: If equipped
Washer fluid can be sprayed on the headlights.
NOTICE
■When the washer fluid tank is empty
Do not press the switch continually as the washer fluid pump may overheat.

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GS350_OM_OM30E15U_(U)
4-5. Using the driving support systems
■Reactivation of the TRAC system linked to vehicle speed
When only the TRAC system is turned off, the TRAC system will turn on when vehi-
cle speed increases. However, when both TRAC/VSC systems are turned off, the
systems will not turn on even when vehicle speed increases.
■Reduced effectiveness of the EPS system
The effectiveness of the EPS system is reduced to prevent the system from overheat-
ing when there is frequent steering input ov er an extended period of time. The steer-
ing wheel may feel heavy as a result.
* Should this occur, refrain from excessive
steering input or stop the vehicle and tu rn the engine off. The EPS system should
return to normal within 10 minutes.
*: If the LKA (Lane-Keeping Assist) system cannot operate in this case, a warning
message will be shown on the multi-information display.

459
GS350_OM_OM30E15U_(U)
When trouble arises7
7-1. Essential information Emergency flashers ..................460
If your vehicle has to be stopped in an emergency ......461
7-2. Steps to take in an emergency If your vehicle needs to be towed ................................ 462
If you think something is wrong ................468
Fuel pump shut off system ...... 469
If a warning light turns on or a warning buzzer sounds ..... 470
If a warning message is displayed ............................... 480
If you have a flat tire...................504
If the engine will not start ..........517
If the shift lever cannot be shifted from P ...................... 519
If the parking brake cannot be released ................................ 520
If the electronic key does not operate properly ..................... 522
If the vehicle battery is discharged ............................. 525
If your vehicle overheats ......... 529
If the vehicle becomes stuck ............................................. 532

529
GS350_OM_OM30E15U_(U)
7
When trouble arises
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. 81) enters
the red zone or a loss of engine power is expe rienced. (For example,
the vehicle speed does not increase.)
●Steam is coming from under the hood.
Correction procedures
1
2
3
1
2

598Alphabetical index
GS350_OM_OM30E15U_(U)
Care ............................................... 376, 380Aluminum wheels .............................. 377
Exterior....................................................376
Interior .................................................... 380
Seat belts ................................................. 381
Cargo capacity........................................ 174
Cargo hooks .......................................... 339
CD player
*
Chains ....................................................... 286
Child restraint system............................ 55 Booster seats, definition ....................55
Booster seats, installation..................65
Convertible seats, definition ............55
Convertible seats, installation ......... 62
Front passenger occupant classification system ......................... 47
Infant seats, definition ..........................55
Infant seats, installation ....................... 62
Installing CRS with LATCH anchors .....................60
Installing CRS with seat belts .......... 62
Installing CRS with top tether strap .........................66
Child safety ................................................ 54 Airbag precautions .............................. 39
Battery precautions ............. 407, 528
Child restraint system .........................55
How your child should wear the seat belt ................................... 31, 32
Installing child restraints.....................59
Moon roof precautions.................... 158
Power window lock switch .............. 151 Power window precautions ...........154
Rear door child-protectors ............ 124
Removed electronic
key battery precautions .............. 428
Seat belt comfort guide ....................... 31
Seat belt extender precautions .......................................... 35
Seat belt precautions .......................... 58
Seat heater precautions ...................351
Trunk precautions .............................. 130
Child-protectors .................................... 124
Cleaning .......................................376, 380 Aluminum wheels ...............................377
Exterior ................................................... 376
Interior .................................................... 380
Seat belts................................................. 381
Clock......................................................... 343
Coat hooks ............................................. 358
Condenser.............................................. 404
Console box ........................................... 335
Console box light ................................. 335
Cooling system Engine overheating .......................... 529
Cruise control Cruise control ....................................... 215
Dynamic radar cruise control ....... 219
Cup holders............................................ 336
Curtain shield airbags ............................ 37
Customizable features ........................ 561
C

600Alphabetical index
GS350_OM_OM30E15U_(U)
Emergency, in case ofIf a warning buzzer sounds..................................................470
If a warning light turns on...............470
If a warning message is displayed ....................................... 480
If the electronic key does not operate properly ........ 522
If the engine will not start................. 517
If the parking brake cannot be released ....................... 520
If the shift lever cannot be shifted from P ............. 519
If the vehicle battery is discharged ........................................ 525
If you have a flat tire ......................... 504
If you think something is wrong.............................................. 468
If your vehicle becomes stuck ......................................................532
If your vehicle has to be stopped in an emergency ........... 461
If your vehicle needs to be towed .......................................462
If your vehicle overheats ................529
Emergency flashers ............................. 460
Engine Accessory mode................................. 178
Compartment......................................397
Engine switch ......................................... 177
Hood ........................................................394
How to start the engine .................... 177
Identification number .......................537
If the engine will not start................. 517
Ignition switch (engine switch) .................................. 177
Overheating .........................................529 Engine compartment cover............. 398
Engine coolant ...................................... 402
Capacity.................................................540
Checking ............................................... 402
Preparing and checking before winter .................................... 284
Engine coolant temperature gauge .......................................................... 81
Engine immobilizer system ..................70
Engine oil ................................................. 399 Capacity.................................................538
Checking ............................................... 399
Oil level warning message ...........489
Oil pressure warning message.............................481
Preparing and checking before winter .................................... 284
Engine oil maintenance data ........... 384
Engine switch ........................................... 177
Enhanced VSC ......................................249
EPS (Electric Power Steering) ............. 250 Function ..................................................250
Warning light ......................................... 471
Warning message.............................485
Event data recorder (EDR)................... 10

604Alphabetical index
GS350_OM_OM30E15U_(U)
Main display............................................ 298
MaintenanceDo-it-yourself maintenance........... 391
General maintenance .................... 386
Maintenance data ............................. 536
Maintenance requirements.......... 383
Malfunction indicator lamp ................ 471
Master warning light ........................... 473
Meter ..............................................................81 Head-up display.................................... 92
Indicators................................................... 79
Instrument panel light control ......... 82
Meters.......................................................... 81
Multi-information display ..................84
Warning lights ........................................ 77
Micro dust and pollen filter ............... 315
Mirrors Inside rear view mirror ..................... 146
Outside rear view mirror defoggers ...........................................326
Outside rear view mirrors .............. 148
Vanity mirrors ...................................... 342
Moon roof................................................. 155 Door lock linked moon roof operation ..................... 156
Jam protection function ................... 156
Operation ............................................... 155
Warning message ............................ 488
MP3 disc
*
Multi-information display..................... 84 Dynamic radar cruise control ....... 219
Lane-Keeping Assist ....................... 238
Language..................................................88
Switching the display .......................... 85
Trip information ..................................... 85
Warning message............................ 480
Navigation system
*
Noise from under vehicle ........................8
Odometer .................................................... 81
Oil Engine oil ...............................................538
Front differential oil ........................... 542
Rear differential oil ............................ 542
Opener Hood........................................................ 394
Trunk .......................................................... 127
Outer foot lights Outer foot lights ................................. 329
Replacing light bulbs .......................455
Wattage .................................................545
Outside rear view mirrors ..................148 Adjusting and folding ........................148
Blind spot monitor ............................268
Linked mirror function when reversing..................................149
Mirror position memory ..................136
Outside rear view mirror defoggers............................ 326
Outside temperature display ............. 85
Overheating, Engine .......................... 529
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