2011 Lexus IS F engine overheat

When trouble arises5
441
5-1. Essential informationEmergency flashers............... 442
If your vehicle needs to be towed ...................................... 443
If you think something is wrong ...................................... 449
Fuel pump shut off system ..................................... 450
Event data recorder ............... 451 5-2. Steps to take in an
emergency
If a warning light turns on or a warning buzzer
sounds... ................................. 453
If a warning message is displayed................................ 463
If you have a flat tire................ 477
If the engine will not start .... 486
If the shift lever cannot be shifted from P ....................... 487
If you lose your keys .............. 488
If the electronic key does not operate properly.......... 489
If the vehicle battery is discharged ............................ 492
If your vehicle overheats ..... 495
If the vehicle becomes stuck........................................ 498
If your vehicle has to be stopped in an
emergency ............................ 499

5
When trouble arises
495
5-2. Steps to take in an emergency
If your vehicle overheats
If your engine overheats:
Stop the vehicle in a safe place and turn off the automatic air
conditioning system.
Check to see if steam is coming out from under the hood.
If you see steam: Stop the engine. Carefully lift the hood after the steam sub-
sides and then restart the engine.
If you do not see steam: Leave the engine running and carefully lift the hood.
Remove the engine compartment cover (front). ( P. 385)
Check to see if the cool ing fans are operating.
If the fans are operating: Wait until the temperature of the engine (shown on the
instrument cluster) begins to fall and then stop the engine.
If the fans are not operating: Stop the engine immediately and call your local Lexus
dealer.
After the engine has cooled
down sufficiently, check the
engine coolant level and inspect
the radiator core (radiator) for
any leaks.STEP1
STEP2
STEP3
STEP4
STEP5

496
5-2. Steps to take in an emergency
■Overheating
If you observe the following, your vehicle may be overheating.
●The display on the engine coolant temperature gauge flashes or a loss of power
is experienced.
●Steam is coming from under the hood.
CAUTION
■To prevent an accident or injury when inspecting under the hood of your vehicle
●If steam is seen coming from under the hood, do not open the hood until the
steam has subsided. The engine compartm ent may be very hot, causing serious
injury such as burns.
●Keep hands and clothing away from the fa ns and belt while the engine is running.
●Do not loosen the coolant reservoir cap while the engine and radiator are hot.
Serious injury, such as burns, may resu lt from hot coolant and steam released
under pressure.
Add engine coolant if neces-
sary.
Water can be used in an emer-
gency measure if engine coolant
is unavailable. ( P. 5 0 7 )
Have the vehicle checked at your nearest Lexus dealer as soon as pos-
sible.
STEP6

554
Alphabetical index
Child safetyAirbag precautions.............................. 98
Battery precautions ..............395, 494
Child restraint system....................... 108
Child-protectors ................................... 43
How your child should wear the seat belt .......................................... 63
Installing child restraints .....................112
Moon roof precautions ..................... 79
Power window lock switch...............73
Power window precautions ............ 75
Removed electron ic key battery
precautions ........................................ 418
Seat belt comfort guide ....................... 61
Seat belt extender precautions ..... 65
Seat belt precautions .......................... 64
Seat heater precautions ................. 339
Trunk precautions ................................ 48
Child-protectors ...................................... 43
Cigarette lighter....................................336
Cleaning Exterior ...................................................366
Interior .....................................................369
Seat belts................................................ 370
Clock .......................................................... 331 Coat hooks.............................................. 343
Compass .................................................. 354
Condenser ................................................391
Console box ........................................... 324
Cooling system
Engine overheating .......................... 495
Cornering assist sensors ...................... 181
Cruise control Cruise control ....................................... 166
Dynamic radar cruise control ....... 169
Cup holders ............................................ 326
Curtain shield airbags .............................91
Customizable features ....................... 528
Daytime running light system ........... 159
Defogger Rear window ......................................... 218
Side mirrors............................................ 218
Dimension ............................................... 502
Dinghy towing........................................ 207
Display Dynamic radar cruise control ....... 169
Satellite switch mode........................332
Trip information.................................... 154
Warning message ............................ 463
D

555
Alphabetical index
Do-it-yourself maintenance............. 378
Door courtesy lightsDoor courtesy lights .......................... 319
Wattage ................................................... 512
Door pockets ......................................... 328
Doors Door lock ................................ 28, 39, 42
Door windows ........................................ 73
Side mirrors................................................71
Driver's seat belt reminder light .... 456
Driving Correct posture .................................... 89
Procedures ............................................. 122
Driving position memory ....................... 51
Electric power steering ....................... 187
Electronic key If the electronic key does not operate properly ............................ 489
Emergency flashers Switch .......................................................442 Emergency, in case of
If the engine will not start............... 486
If the shift lever cannot be shifted from P ...................................487
If the vehicle has a discharged battery .................................................. 492
If the warning buzzer sounds ......453
If the warning light turns on...........453
If a warning message is displayed.............................................463
If you have a flat tire ......................... 477
If you lose your keys ........................ 488
If you think something is wrong ...................................................449
If the electronic key does not operate properly ........................... 489
If your vehicle becomes stuck .... 498
If your vehicle has to be stopped in an emergency ......... 499
If your vehicle needs to be towed....................................................443
If your vehicle overheats ............... 495
E

556
Alphabetical index
EngineACCESSORY mode ...................... 130
Compartment .....................................384
Engine switch........................................ 130
Hood......................................................... 381
How to start the engine................... 130
Identification number.......................503
If the engine will not start ...............486
Ignition switch....................................... 130
Overheating.........................................495
Engine compartment cover ............ 385
Engine coolant Capacity .................................................507
Checking ...............................................389
Preparing and checking before winter .................................... 204
Engine coolant temperature gauge....................................................... 146
Engine immobilizer system..................83
Engine oil Capacity ................................................ 506
Checking ...............................................386
Preparing and checking before winter .................................... 204
Engine oil maintenance data........... 388
EPS .............................................................. 187
Event data recorder ............................. 451 First-aid kit storage belt ..................... 345
Floor mat .................................................. 344
Fluid
Brake ......................................................... 391
Washer................................................... 396
Fog lights Switch .......................................................... 161
Wattage ................................................... 512
Footwell lights ..........................................319
Front fog lights Switch .......................................................... 161
Wattage ................................................... 512
Front passenger occupant classification system .......................... 103
Front passenger's seat belt
reminder light ..................................... 456
Front seats Adjustment .............................................. 50
Driving position memory ................... 51
Seat position memory........................ 55
Front turn signal lights Switch ........................................................ 143
Wattage ................................................... 512F

559
Alphabetical index
MeterInstrument panel light control .......148
Meters ....................................................... 146
Micro dust and pollen filter ................ 214
Mirrors Inside rear view mirror ...................... 69
Side mirror heater ............................... 218
Side mirrors................................................71
Vanity mirrors ..................................... 330
Moon roof ................................................... 76
MP3 disc ................................................. 238
Multi-information display.................... 153
Noise from under vehicle ...................... 19
Odometer ................................................. 146
Oil Engine oil ............................................... 386
Opener Fuel filler door ........................................ 80
Hood .........................................................381
Trunk ............................................................46
Outer foot lights Outer foot lights................................... 319
Wattage ................................................... 512 Outside rear view mirrors
Adjusting and folding............................ 71
Mirror position memory ......................51
Outside temperature display ........... 154
Overhead console ............................... 325
Overhead courtesy lights Overhead courtesy lights............... 319
Wattage ................................................... 512
Overheating, Engine...........................495
Parking assist sensors ............................181
Parking brake .......................................... 144
Parking lights Replacing light bulbs ........................435
Switch........................................................ 158
Wattage ................................................... 512
PCS ............................................................. 193
Personal lights Switch.........................................................321
Power outlet............................................ 337
Power windows ........................................ 73
Pre-collision system.............................. 193
*: Refer to the “Navigatio n System Owner’s Manual”
N
O
P

565
What to do if...
What to do if...
A tire puncturesP. 4 7 7If you have a flat tire
The engine does not start
P. 4 8 6If the engine will not start
P. 8 3Engine immobilizer system
P. 4 9 2If the vehicle battery is discharged
The shift lever cannot be
moved out of PP. 4 8 7If the shift lever cannot be shifted
from P
The display on the engine cool-
ant temperature gauge flashes
Steam can be seen coming
from under the hood
P. 4 9 5If your vehicle overheats
The key is lostP. 4 8 8If you lose your keys
The battery runs outP. 4 9 2If the vehicle battery is discharged
The doors cannot be lockedP. 4 2Doors
The horn begins to soundP. 8 5Alarm
The vehicle is stuck in mud or
sandP. 4 9 8If the vehicle becomes stuck