engine overheat Lexus IS250 2006 Quick Guide / LEXUS 2006 IS350/250 FROM MAY 2006 PROD. (OM53619U) User Guide

5
When trouble arises
369
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 lift the hood.
If you do not see steam: Leave the engine running and carefully lift the hood.
Remove the engine compartment cover. ( P. 2 6 7 )
Check to see if the cooling fan is operating.
If the fan is operating: Wait until the temperature of the engine (shown on the
instrument cluster) 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
engine coolant level and inspect
the radiator core (radiator) for
any leaks.STEP1
STEP2
STEP3
STEP4
STEP5

370
5-2. Steps to take in an emergency
■Overheating
If you observe the following, 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 other belts 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 engine coolant
Wait until the engine has cooled do wn before adding engine coolant.
When adding coolant, do so slowly. Adding cool coolant to a hot engine too quickly
can cause damage to the engine.
Add engine coolant if required.
Water can be used in an emer-
gency measure if engine coolant
is unavailable. ( P. 3 7 9 )
Have the vehicle checked at your nearest Lexus dealer as soon as pos-
sible.
STEP6

409
Alphabetical index
Cargo capacity ....................................... 152
Cargo hooks ...........................................234
CD changer .............................................185
CD player..................................................185
Chains ......................................................... 156
Child restraint system (CRS)Booster seats, definition..................... 72
Booster seats, installation ..................76
Convertible seats, definition ............ 72
Convertible seats, installation .........76
Infant seats, definition .......................... 72
Infant seats, installation........................76
Installing CRS with lower anchorages ...........................................79
Installing CRS with seatbelts ...........76
Installing CRS with top straps ........ 80
Child safety Airbag precautions ..............................67
Battery precautions .............. 277, 368
Child restraint system ......................... 72
Child-protectors................................... 20
How your child should wear the seatbelt ............................................ 37
Installing child restraints .....................75
Moon roof precautions ..................... 50
Power window lock switch ............. 45
Power window precautions............. 47
Removed electronic key battery precautions ....................................... 298
Seat belt comfort guide..................... 35
Seat belt extender precautions ..... 39
Seat belt precautions.......................... 38
Seat heater precautions ...... 225, 227
Trunk precautions .................................25
Child-protectors ..................................... 20
Cigarette lighter ....................................222 Cleaning
Exterior....................................................248
Interior .................................................... 250
Seat belts ................................................. 251
Clock ...........................................................217
Coat hooks .............................................. 232
Compass .................................................. 242
Condenser .............................................. 274
Console box ............................................ 210
Cooling system Engine overheating.......................... 369
Cornering assist sensors .................... 138
Cruise control Cruise control........................................126
Dynamic radar cruise control........129
Cup holder ................................................212
Curtain shield airbags..............................61
Customizable features ...................... 400
Daytime running light system .............119
Defogger Rear window ..........................................174
Side mirror...............................................174
Dimension................................................ 374
Dinghy towing ............................... 162, 163
Display Dynamic radar cruise control........129
Satellite switch mode ........................ 218
Trip information ..................................... 115
Warning message ............................ 338
Do-it-yourself maintenance .............259
Door courtesy lights Door courtesy lights ........................ 205
Wattage ................................................. 388
Door pockets........................................... 213
D

410
Alphabetical index
DoorsDoor glasses ........................................... 45
Door lock.................................................... 19
Side mirrors ............................................. 43
Driver's seat belt reminder light .....335
Driving Correct posture .................................... 59
Procedures .............................................. 86
Driving position memory ......................28
Electric power steering (EPS).......... 144
Electronic key If your electronic key battery is discharged .................................... 363
Emergency, in case of If the engine will not start ...............360
If the shift lever cannot be shifted from P .....................................361
If the vehicle has discharged battery ..................................................366
If the warning buzzer sounds ...... 333
If the warning light turns on .......... 333
If the warning message is
displayed ............................................338
If you have a flat tire ......................... 352
If you lose your keys......................... 362
If you think something is wrong ................................................... 329
If your electronic key battery is discharged .................................... 363
If your vehicle becomes stuck....... 371
If your vehicle needs to be towed ................................................... 322
If your vehicle overheats ................369
Engine Compartment ..................................... 265 Engine switch ..........................................94
Hood ........................................................262
How to start the engine .....................94
Identification number .......................375
If the engine will not start ............... 360
Overheating ........................................ 369
Engine compartment cover ............. 267
Engine coolant Capacity .................................................379
Checking................................................ 272
Preparing and checking before winter...................................... 156
Engine coolant temperature gauge ...................................................... 105
Engine immobilizer system ................. 54
Engine oil Capacity ................................................ 378
Checking............................................... 268
Preparing and checking before winter...................................... 156
Engine oil maintenance data ............. 271
EPS (Electric power steering) ..........144
Event data recorder ..............................331
First-aid kit storage belt ..................... 234
Floor mat .................................................. 233
Fluid Brake ........................................................ 274
Washer....................................................278
Fog lights Switch .......................................................... 121
Wattage .................................................388
Foot well lighting................................... 205
Front fog lights Switch .......................................................... 121
Wattage .................................................388
E
F

412
Alphabetical index
Keys ................................................................. 2
Mechanical key.......................................... 2
Wireless remote control..................... 16
Light bulbs Replacing ................................................. 314
Wattage................................................. 388
Lights Door courtesy lights.........................205
Fog light switch .......................................121
Headlights switch ................................. 118
Interior light switch ............................ 207
Outer foot lights .................................205
Overhead courtesy light................205
Personal light switch ........................ 207
Replacing light bulbs.......................... 314
Scuff lighting .........................................205
Shift lever lighting ..............................205
Turn signal lever .................................. 103
Vanity lights ............................................ 216
Wattage................................................. 388
Load capacity .......................................... 155
Maintenance Do-it-yourself maintenance ......... 259
General maintenance ..................... 255
Maintenance data.............................. 374
Maintenance requirements .......... 253
Manual transmission...............................101
Meter Instrument panel light control ...... 106
Meters ...................................................... 105
Mirrors Inside rear view mirror........................42
Side mirror heater ............................... 174
Side mirrors ............................................. 43 Vanity mirrors ....................................... 216
Moon roof................................................... 48
MP3 disc .......................................................... 191
Multi-information display ........................ 114
Odometer ................................................ 105
Oil Engine oil............................................... 268
Opener Fuel filler door .......................................... 51
Hood ........................................................262
Trunk............................................................ 23
Outer foot lights Outer foot lights................................. 205
Wattage .................................................388
Outside rear view mirrors Adjusting and folding .......................... 43
Driving position memory ..................28
Outside temperature display ............. 115
Overhead console .................................. 211
Overhead courtesy lights Overhead courtesy lights ............. 205
Wattage .................................................388
Overheating, Engine ............................. 369
Parking assist sensors.......................... 138
Parking brake.......................................... 104
Parking lights Replacing light bulbs ......................... 314
Switch ..........................................................118
Wattage .................................................388
PCS (Pre-collision system) ................149
Personal lights Switch .......................................................207
Micro dust and pollen removal mode ........................................................170
L
M
O
P

417
What to do if...
What to do if...
A tire puncturesP. 3 5 2If you have a flat tire
The engine does not start
P. 3 6 0If the engine will not start
P. 5 4Engine immobilizer system
P. 3 6 3If the battery is discharged
The shift lever cannot be
moved outP. 3 6 1If 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 6 9If your vehicle overheats
The key is lostP. 3 6 2If you lose your keys
The battery runs outP. 3 6 6If the battery is discharged
The doors cannot be lockedP. 1 9Doors
The horn begins to soundP. 5 6Alarm
The vehicle is stuck in mud or
sandP. 3 7 1If the vehicle becomes stuck