2008 LEXUS RX400H heating

5
When trouble arises
425
5-2. Steps to take in an emergency
RX400h_U
■Overheating
If you observe the following, your vehicle may be overheating.
●The message WATER TEMP is displayed on the multi-information display.
●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 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 compartment may be very hot, causing serious
injury such as burns.
●Keep hands and clothing away from the fan and other belts while the hybrid sys-
tem is running.
●Do not loosen the radiator cap while the hybrid system and radiator are hot.
Serious injury, such as burns, may result from hot coolant and steam released
under pressure.
Add engine coolant if required.
Water can be used in an emer-
gency measure if engine coolant
is unavailable. (→P. 4 3 5 )
Have the vehicle checked at your nearest Lexus dealer as soon as pos-
sible.
STEP5

473
Alphabetical index
RX400h_U
CareExterior ................................................... 298
Interior.......................................................301
Seat belts ............................................... 302
Cargo capacity ....................................... 178
Cargo hooks .......................................... 284
CD changer CD .............................................................. 214
MP3 disc ............................................... 220
WMA disc ............................................ 220
CD player.................................................. 214
Chains......................................................... 184
Child restraint system Booster seats, definition.................. 108
Booster seats, installation ..................113
Convertible seats, definition ......... 108
Convertible seats, installation .........113
Front passenger occupant
classification system .......................103
Infant seats, definition ....................... 108
Infant seats, installation........................113
Installing CRS with lower
anchorages ...........................................116
Installing CRS with seat belts ..........113
Installing CRS with top straps ........ 118
Child safety
Air bag precautions ............................ 98
Battery precautions.............. 328, 423
Child restraint system ...................... 108
Child-protectors................................... 40
How your child should wear the seat belt ...........................................62
Installing child restraints ..................... 112
Moon roof precautions ...................... 77
Power window lock switch .............. 72
Power window precautions............. 74 Removed rear seat entertainment
system controller battery............. 351
Removed wireless remote control battery precautions .......................349
Seat belt comfort guide .....................59
Seat belt extender precautions...... 64
Seat belt precautions .......................... 62
Seat heater precautions................. 280
Child-protectors ...................................... 40
Cleaning Exterior................................................... 298
Interior ...................................................... 301
Seat belts ................................................302
Clock ......................................................... 274
Coin holder .............................................268
Compass .................................................. 292
Condenser .............................................. 325
Console box ........................................... 266
Cooling system Engine overheating........................... 424
Cruise control Cruise control........................................157
Dynamic laser cruise control ........ 160
Cup holder .............................................. 269
Curtain shield airbags............................. 91
Customizable features .......................458
Daytime running light system ........... 149
Defogger Rear window ........................................204
Side mirror.............................................204
Dimension................................................430
Dinghy towing ......................................... 196
Display
Dynamic laser cruise control ........ 160
Trip information ................................... 146C
D

474
Alphabetical index
RX400h_U
Do-it-yourself maintenance .............. 310
Door courtesy lightsDoor courtesy lights.........................260
Wattage.................................................... 441
Door lock Back door................................................. 44
Side door .................................................. 39
Wireless remote control................... 36
Door pockets............................................271
Doors Back door................................................. 44
Door glasses ............................................72
Door lock......................................... 36, 39
Power back door ................................. 44
Side door .................................................. 39
Side mirrors ............................................. 68
Driver's seat belt reminder light ...... 391
Driving Break-in tips ........................................... 123
Correct posture .................................... 89
Procedures ............................................. 122
Winter driving tips...............................182
Driving position memory ......................55
DVD player Audio CD/CD text .......................... 248
DVD video ........................................... 239
Initial setting .......................................... 253
MP3 discs ............................................. 249
Video CD.............................................. 246
Electric power steering ....................... 169
Emergency, in case of If the back door opener is in operative................................................ 46
If the hybrid system will not start ................................................ 418 If the shift lever cannot be
shifted from P..................................... 419
If the 12-volt battery is discharged ......................................... 421
If the warning buzzer sounds......388
If the warning light turns on..........388
If you have a flat tire ........................408
If you lose your keys ........................ 420
If you think something is wrong .................................................. 385
If your vehicle becomes stuck ..... 427
If your vehicle needs to be towed ................................................... 378
If your vehicle overheats.................424
Energy monitor ......................................28
Engine
Compartment ....................................... 316
Engine switch .......................................... 131
Hood ......................................................... 313
How to start the hybrid system ...... 131
Identification number ........................ 431
If the hybrid system will not start .................................................418
Ignition switch ......................................... 131
Overheating .........................................424
Engine compartment cover ............... 317
Engine coolant Capacity ................................................ 435
Checking................................................323
Preparing and checking
before winter...................................... 182
Engine coolant temperature
gauge ...................................................... 138
Engine oil
Capacity .................................................434
Checking................................................. 318
E

477
Alphabetical index
RX400h_U
Luggage compartment lightsSwitch ..........................................................46
Wattage ................................................... 441
Luggage cover ...................................... 284
Maintenance
Do-it-yourself maintenance ...........310
General maintenance .....................306
Maintenance data ............................. 430
Maintenance requirements .......... 304
Meter Instrument panel light control ....... 139
Meters .......................................................138
Meter ring light ..................................... 260
Mirrors Inside rear view mirror .......................67
Side mirror heater ............................. 204
Side mirrors............................................. 68
Vanity mirrors ......................................273
Moon roof ...................................................75
MP3 disc ................................................. 220
Multi-display
Brightness control..............................276
Multi-information display
Energy monitor ..................................... 28
Odometer .................................................138
Oil Engine oil .................................................318
Opener
Back door .................................................44
Fuel filler door ........................................ 78
Hood ......................................................... 313
Outside rear view mirrors
Adjusting and folding ......................... 68
Driving position memory ................. 55 Outside temperature display .......... 275
Overhead console ............................... 269
Overhead courtesy lights .................260
Overheating, Engine........................... 424
Parking brake ...........................................137
Parking lights
Replacing light bulbs ....................... 365
Switch........................................................ 148
Wattage ....................................................441
Personal lights Personal lights .................................... 260
Switch.......................................................264
Wattage ....................................................441
Power meter ............................................ 138
Power outlet............................................ 277
Power windows ........................................ 72
Radiator .................................................... 325
Radio .......................................................... 207
RDS ........................................................... 208
Rear audio system ................................ 233
Rear seat entertainment system Audio CD/CD text ..........................248
DVD video ............................................239
Initial setting ..........................................253
MP3 discs.............................................. 249
Rear seat entertainment
system .................................................. 233
Replacing controller battery........ 350
Video ........................................................ 251
Video CD ..............................................246
Rear seats Adjustment ............................................... 52
Folding down .......................................... 52
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