engine overheat Lexus GS350 2007 Using the front audio system / LEXUS 2007 GS430/350 (OM30A04U) User Guide

492
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 and car efully lif
t the hood.
If you do not see steam: Leave the engine running and carefully lift the hood.
Remove the engine compartment cover. ( P. 3 7 8 )
Check to see if the cooling fan is operating.
If the fan is operating: 
Wait until the engine coolant temperature gauge begins to
fall and then stop the engine.
If the fan is not operating: 
Stop the engine immediately and call y
our local Lexus
dealer.
After the engine has cooled
do
wn sufficiently, check the
coolant level and inspect the
radiator core (radiator) for any
leaks.
STEP1
STEP2
STEP3
STEP4
STEP5

5
When trouble arises
493
5-2. Steps to take in an emergency
■Overheating
In the following situations, your vehicle may be overheating.
●The engine coolant temperature gauge enters the red zone or a loss of power is
experienced.
●Steam is coming from under the hood.
CAUTION
■To prevent an accident or injury when in specting under the hood of your vehicle
●Keep hands and clothing away from the fan and engine drive belt while the
engine is running.
●Do not loosen the radiator 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 coolant if required.
Water can be used in an emer -
gency measure if coolant is
una
vailable. ( P. 5 0 2 )
Have the vehicle checked at your nearest Lexus dealer as soon as pos-
sible.
STEP6

533
Alphabetical index
Installing CRS with lower 
anchorages .......................................... 86
Installing CRS with seatbelts .......... 82
Installing CRS with top straps ........ 87
Child safety Airbag precautions .............................. 67
Child restraint system ........................ 78
Child-protectors..................................... 18
How your child should wear the seat -
belt............................................................ 36
Installing child restraints ...................... 81
Moon roof ................................................ 48
Power window lock switch .............. 43
Power window precautions............ 45
Removed electronic key battery 
precautions ......................................... 412
Seat belt comfort guide...................... 34
Seat belt precautions........................... 37
Seat heater precautions ..... 323, 325
Trunk............................................................ 24
Cigarette lighter ..................................... 321
Cleaning Exterior ................................................... 358
Interior..................................................... 360
Seat belts ................................................. 361
Clock........................................................... 318
Coin holder .............................................. 313
Compass ................................................. 339
Condenser.............................................. 385
Console box.............................................. 311
Cooling system Engine overheating .......................... 496Cruise control
Cruise control........................................ 124
Dynamic radar cruise control........ 127
Cup holders ............................................. 314
Curtain shield airbags............................ 59
Customizable features ....................... 523
Daytime running light system ............. 117
Defogger Rear window ......................................... 198
Side mirror.............................................. 198
Dimension................................................ 498
Dinghy towing ......................................... 178
Display Multi-informatio n display
..................113
Touch screen ........................................ 180
Trip information ..................................... 114
Warning message ............................ 455
Do-it-yourself maintenance ............. 369
Door courtesy lights ............................ 307
Door pocket............................................. 315
Doors Door lock .................................................... 17
Rear door child protector ................. 18
Driver's seat belt reminder light ..... 452
Driving Correct posture..................................... 57
Procedures .............................................. 90
DVD player/changer.......................... 233
Electronic key Replacing battery.................................. 411
If the electronic key does not 
operate properly ........................... 489
D
E

534
Alphabetical index
Emergency, in case ofIf a warning light turns on .............. 449
If a warning message is 
displayed ............................................455
If the engine will not start ............... 486
If the shift lever cannot be 
shifted from P ................................... 487
If the battery is discharged ........... 492
If you have a flat tire ............. 474, 476
If you lose your keys........................ 488
If you think something is 
wrong ................................................... 445
If your vehicle becomes stuck..... 499
If your vehicle needs to be 
towed ...................................................438
If your vehicle overheats ................ 496
If the electronic key does not 
operate properly ............................489
Engine Compartment ..................................... 376
Hood........................................................ 373
How to start the engine..................... 97
If the engine will not start ............... 486
Overheating......................................... 496
Power switch .......................................... 97
Engine compartment cover ............. 378
Engine coolant temperature 
gauge....................................................... 106
Engine/inverter coolant Capacity ................................................. 502
Checking ............................................... 384
Preparing and checking  before winter ...................................... 172
Engine immobilizer system.................. 52
Engine oil Capacity .................................................. 501
Checking ............................................... 379Preparing and checking

before winter.......................................172
Engine oil maintenance data ........... 382
EPS (Electric Power Steering) ........ 159
Event data recorder ............................ 447
First-aid kit storage belt ....................... 331
Floor mats ................................................ 330
Fluid Brake ....................................................... 386
Washer................................................... 390
Fog lights Switch .......................................................... 119
Wattage ................................................. 508
Foot light .................................................. 307
Front passenger occupant 
classification system .............................72
Front passenger's seat belt 
reminder light ..................................... 452
Front seats Adjustment ............................................... 25
Driving position memory .................. 27
Front turn signal lights Wattage ................................................. 508
Fuel Capacity ................................................ 500
Fuel gauge .............................................. 106
Fuel pump shut off system ............ 446
Gas station information ................. 542
Information ........................................... 509
Refueling .................................................... 49
Fuel filler door ........................................... 49
Fuel pump shut off system................. 446
Fuses ............................................................ 413
F

536
Alphabetical index
MeterInstrument panel light control ....... 107
Meters ...................................................... 106
Micro dust and pollen removal 
mode ........................................................ 193
Mirrors Inside rear view mirror....................... 40
Side mirror heater .............................. 198
Side mirrors ............................................... 41
Vanity mirrors........................................ 317
Moon roof ................................................... 46
MP3 disc ..
.................................................... 224
Multi-information display ........
................113
Odometer................................................. 106
Oil Engine oil ............................................... 379
Opener Fuel filler door......................................... 49
Hood........................................................ 373
Trunk ............................................................. 21
Outside rear view mirrors Adjusting and folding ........................... 41
Driving position memory................... 27
Outside temperature display............ 319
Overhead console ................................ 312
Overheating, Engine........................... 496
Parking brake .......................................... 105
Parking lights Replacing light bulbs........................ 438
Switch ......................................................... 116
Wattage................................................. 508
PCS (Pre-Collision System) ............. 160
Personal lights ....................................... 308
Power meter ............................................ 106Power outlet ...........................................
322
Power windows ........................................ 43
Radar cruise control.............................. 127
Radiator .................................................... 385
Radio.......................................................... 202
RDS (Radio Data System) ................ 204
Rear sunshade ....................................... 328
Rear turn signal lights Replacing light bulbs ....................... 438
Wattage ................................................. 508
Rear view monitor system ................. 155
Rear window defogger ....................... 198
Replacing Electronic key battery ......................... 411
Fuses .......................................................... 413
Light bulbs ............................................ 438
Reporting safety defects for 
U.S. owners..........................................530
Seat belts Adjusting the seat belt ........................ 34
Automatic Locking Retractor 
(ALR) .......................................................35
Child restraint system 
installation ............................................... 81
Cleaning and maintaining 
the seat belts ...................................... 361
Emergency Locking Retractor 
(ELR)........................................................35
How to wear your seat belt ............. 33
How your child should wear 
the seat belt...........................................36
Pre-collision seat belts........................ 35
Pregnant women, 
proper seat belt use .........................35
O
P
R
S

540
What to do if...
What to do if...
A tire puncturesP. 4 74 /476If you have a flat tire
The engine does not start
P. 5 2Engine immobilizer system
P. 4 8 6If the engine will not start
P. 4 9 2If the battery is discharged
The shift lever cannot be 
moved outP. 4 8 7If the shift lever cannot be shifted 
from “P”
The engine coolant temperature
gauge enters the red zone
Steam can be seen coming 
from under the hood
P. 4 9 6If your vehicle overheats
The key is lostP. 4 8 8If you lose your keys
The battery runs outP. 4 9 2If the battery is discharged
The doors cannot be lockedP. 1 7Doors
The horn begins to soundP. 5 4Alarm
The vehicle is stuck in mud or
sandP. 4 9 9If the vehicle becomes stuck