2007 Lexus GX470 engine overheat

354
5-2. Steps to take in an emergency
■If the tire pressure warning light comes on after blinking for 1 minute frequently
If the tire pressure warning light comes on after blinking for 1 minute frequently
when the ignition switch is turned to th e “ON” position, have it checked by your
Lexus dealer.
■After changing the engine oil (U.S.A. only)
Make sure to reset the oil maintenance data. ( P. 2 9 2 )
CAUTION
■Maintenance of the tires
Each tire, including the spare (if provided ), should be checked monthly when cold
and inflated to the inflation pressure re commended by the vehicle manufacturer on
the vehicle placard or tire inflation pressu re label (tire and load information label).
(If your vehicle has tires of a different size than the size indicated on the vehicle
placard or tire inflation pressure label [tire and load information label], you should
determine the proper tire inflation pressure for those tires.)
As an added safety feature, your vehicl e has been equipped with a tire pressure
monitoring system (TPMS-tire pressure warning system) that illuminates a low tire
pressure telltale (tire pressure warning light) when one or more of your tires is sig-
nificantly under-inflated. Accordingly, when the low tire pressure telltale (tire pres-
sure warning light) illuminates, you should stop and check your tires as soon as
possible, and inflate them to the proper pressure. Driving on a significantly under-
inflated tire causes the tire to overheat and can lead to tire failure. Under-inflation
also reduces fuel efficiency and tire tread life, and may affect the vehicle's handling
and stopping ability.
Please note that the TPMS (tire pressure warning system) is not a substitute for
proper tire maintenance, and it is the driv er's responsibility to maintain correct tire
pressure, even if under-inflation has not reached the level to trigger illumination of
the TPMS low tire pressure telltale (tire pressure warning light).

5
When trouble arises
373
5-2. Steps to take in an emergency
If your vehicle overheats
If the 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: Turn off the engine and carefully lift the hood.
If you do not see steam: Leave the engine running and carefully lift the hood.
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 your local Lexus
dealer.
After the engine has cooled
down sufficiently, check the
coolant level and inspect the
radiator for any leaks.STEP1
STEP2
STEP3
STEP4

374
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 result from hot coolant and steam released
under pressure.
NOTICE
■When adding coolant
Wait until the engine has cooled down before adding coolant.
When adding coolant, do so slowly. Adding cold coolant to a hot engine too quickly
can cause damage to the engine.
Add coolant if required.
Water can be used as an emer-
gency measure if coolant is
unavailable. ( P. 3 8 2 )
Have the vehicle checked at your nearest Lexus dealer as soon as pos-
sible.
STEP5

407
Alphabetical index
Installing CRS with top straps ........ 83
Child safety Airbag precautions ..............................64
Child restraint system ......................... 74
Child-protectors....................................... 7
How your child should wear the seatbelt ............................................32
Installing child restraints ..................... 77
Moon roof .................................................43
Power window lock switch ............... 41
Power window precautions............. 42
Removed battery precautions .........................................318
Seat belt precautions...........................33
Seat heater precautions ................... 241
Cigarette lighter ................................... 238
Cleaning Exterior .................................................... 272
Interior......................................................274
Seat belts ................................................275
Clock......................................................... 235
Compass ................................................. 253
Condenser.............................................. 295
Cooling system Engine overheating ...........................373
Cruise control Cruise control ........................................ 118
Cup holders.............................................. 231
Curtain shield airbags ............................56
Customizable features ...................... 398 Daytime running light system ............. 112
Defogger
Rear window ......................................... 169
Side mirror.............................................. 169
Dimension................................................ 378
Dinghy towing ......................................... 160
Display Trip information ...................................108
Do-it-yourself maintenance .............283
Door courtesy lights ............................ 225
Door pocket............................................ 232
Doors Door lock ..................................................... 6
Rear door child protector ....................7
Downhill assist control system ......... 130
Driver's seat belt reminder light ...... 351
Driving Correct posture..................................... 54
Procedures ..............................................95
DVD player ............................................ 200D

408
Alphabetical index
Electronic modulated suspension .. 129
Emergency, in case ofIf a warning light turns on .............. 347
If the engine will not start........................................................ 367
If the shift lever cannot be shifted from P ...................................368
If the vehicle battery is discharged ....................................... 370
If you have a flat tire .........................356
If you lose your keys.........................369
If you think something is wrong ................................................... 343
If your vehicle becomes stuck..... 375
If your vehicle needs to be towed ...................................................338
If your vehicle overheats ................ 373
Engine Compartment ..................................... 287
Hood........................................................286
How to start the engine..................... 95
If the engine will not start........................................................ 367
Overheating......................................... 373
Engine compartment cover ............ 288
Engine coolant temperature gauge....................................................... 103
Engine coolant Capacity ................................................. 382
Checking ............................................... 294
Preparing and checking before winter ......................................146
Engine immobilizer system.................. 49 Engine oil
Capacity .................................................. 381
Checking............................................... 289
Preparing and checking before winter...................................... 146
Engine oil maintenance data ........... 292
Event data recorder ............................ 345
First-aid kit storage belt ..................... 246
Flat key .............................................................2
Floor mats ................................................ 244
Fluid Brake ....................................................... 296
Power steering ....................................297
Washer..................................................... 301
Fog lights Switch .......................................................... 113
Wattage ................................................. 386
Foot light .................................................. 225
Front passenger's seat belt
reminder light ...................................... 351
Front passenger occupant classification system ............................ 69
Front seats Adjustment ................................................ 13
Driving position memory .................. 24
Front turn signal lights Wattage ................................................. 386
Fuel Capacity ................................................380
Fuel gauge .............................................. 103
Gas station information ................... 416
Information ........................................... 387
Refueling ....................................................46
Fuel filler door ........................................... 46
Fuses ............................................................321E
F

410
Alphabetical index
MaintenanceDo-it-yourself maintenance ......... 283
General maintenance ..................... 279
Maintenance data.............................. 378
Maintenance requirements ...........277
Meter Instrument panel light control ...... 104
Meters ...................................................... 103
Mirrors Inside rear view mirror....................... 36
Side mirror heater ...............................169
Side mirrors ..............................................37
Vanity mirrors...................................... 234
Moon roof ................................................... 43
MP3 disc ....................................................... 188
Odometer................................................. 103
Off-road precautions Driving....................................................... 137
Vehicle ......................................................135
Oil Engine oil ...............................................289
Outside rear view mirrors
Adjusting and folding ..........................37
Defogger switch...................................169
Driving position memory...................24
Outside temperature display........... 236
Overhead console ...............................230
Overheating, Engine ............................. 373 Parking brake.......................................... 102
Parking lights
Replacing light bulbs ......................... 331
Switch ............................................................111
Wattage ................................................. 386
Personal lights........................................ 225
Power outlet ........................................... 239
Power windows .......................................... 41
Quarter window ................................... 245
Radiator .................................................... 295
Radio ................................................................ 173
RDS (Radio Date System) .................. 175
Rear console box.................................. 229
Rear height control air suspension .......................................123
Rear sear entertainment system A/V input adapter ...............................217
Headphone jacks .............................. 202
Remote control .................................. 205
Rear seat Folding up the third seat ..................... 18
Removing the third seat .......................21
Tumbling the second seat ................. 16
Rear step bumper ...................................... 11
Rear turn signal lights Replacing light bulbs ......................... 331
Wattage ................................................. 386M
O
P
Q
R

414
What to do if...
What to do if...
A tire puncturesP. 3 5 6If you have a flat tire
The engine does not start
P. 4 9Engine immobilizer system
P. 3 6 7If the engine will not start
P. 3 7 0If the battery is discharged
The shift lever cannot be
moved outP. 3 6 8If 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. 3 7 3If your vehicle overheats
The key is lostP. 3 6 9If you lose your keys
The battery is dischargedP. 3 7 0If the vehicle has a discharged battery
The doors cannot be lockedP. 6Doors
The horn begins to soundP. 5 1Alarm
The vehicle is stuck in mud or
sandP. 3 7 5If the vehicle becomes stuck