Page 401 of 464

5
When trouble arises
401
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. 411)
Have the vehicle checked at your nearest Lexus dealer as soon as pos-
sible.
STEP6
Page 409 of 464
409
6-1. Specifications
6
Vehicle specifications
Engine
Fuel
IS250IS350
Model4GR-FSE2GR-FSE
Ty p e6-cylinder V type,
4-cycle, gasoline6-cylinder V type,
4-cycle, gasoline
Bore and stroke3.27 3.03 in.
(83.0 77.0 mm)3.70 3.27 in.
(94.0 83.0 mm)
Displacement 152.5 cu.in.
(2500 cm3)
210.9 cu.in.
(3456 cm3)
Drive belt tensionAutomatic adjustment
Fuel typeUnleaded gasoline only
Octane rating91 (Research octane number 96) or higher
Fuel tank capacity17.2 gal. (65 L, 14.3 lmp.gal.)
Page 427 of 464
427
6-1. Specifications
6
Vehicle specifications
■Tire dimensions
Section width
Ti r e h e i g h t
Wheel diameter
Tire section names
Bead
Sidewall
Shoulder
Tread
Belt
Inner liner
Reinforcing rubber
Carcass
Rim lines
Bead wires
Chafer
Uniform Tire Quality GradingThis information has b een prepared in accordance with regulations
issued by the National Highway Tr affic Safety Administration of the
U.S.A. Department of Transportation.
It provides the purchasers and/or prospective purchasers of Lexus vehi-
cles with information on uniform tire quality grading.
Your Lexus dealer will help answer an y questions you may have as you read
this information.
Page 443 of 464
For owners7
443
Reporting safety defects for U.S. owners..................... 444
Seat belt instructions for Canadian owners
(in French) ............................. 445
Page 445 of 464
445
7
For owners
Seat belt instructions for Canadian owners (in French)
The following is a French explanation of seat belt instructions extracted
from the seat belt section in this manual.
See the seat belt section for more detailed seat belt instructions in
English.
Utilisation correcte des ceintures de sécurité
●Déroulez la sangle diagonale de
telle sorte qu'elle passe bien sur
l'épaule, sans pour autant être
en contact avec votre cou ou
glisser de votre épaule.
● Placez la sangle abdominale le
plus bas possible sur les
hanches.
● Réglez la position du dossier de
siège. Asseyez-vous le dos le
plus droit possible et calez-vous
bien dans le siège.
● Ne vrillez pas la ceinture de
sécurité.
Guide de confort de ceinture de sécurité (sièges arrière extérieurs)
Si la sangle diagonale est proche
du cou de la personne, faites
coulisser le guide de confort de
ceinture de sécurité vers l'avant.
Page 451 of 464

451
Alphabetical index
Back-up lightsWattage ................................................. 420
Battery Checking ............................................... 302
If the vehicle has discharged battery.................................................. 397
Preparing and checking before winter ......................................183
Bottle holders .......................................... 241
Brake Fluid ............................................................301
Parking brake ........................................ 129
Brake assist ............................................... 170
Care Exterior ....................................................274
Interior...................................................... 277
Seat belts ............................................... 278
Cargo capacity ....................................... 179
Cargo hooks ............................................ 261
CD changer ...............................................211
CD player....................................................211
Chains .........................................................183
Child restraint system Booster seats, definition.................... 95
Booster seats, installation ................. 99
Convertible seats, definition ........... 95
Convertible seats, installation ........ 99 Front passenger occupant
classification system .........................90
Infant seats, definition ..........................95
Infant seats, installation .......................99
Installing CRS with lower anchorages......................................... 102
Installing CRS with seat belts ..........99
Installing CRS with top straps....... 103
Child safety Airbag precautions ............................. 85
Battery precautions ............. 304, 399
Child restraint system .........................95
Child-protectors ...................................38
How your child should wear the seat belt ..........................................55
Installing child restraints.....................98
Moon roof precautions......................68
Power window lock switch .............. 64
Power window precautions ............65
Removed electronic key battery precautions........................................326
Seat belt comfort guide ..................... 53
Seat belt extender precautions...... 57
Seat belt precautions ..........................56
Seat heater precautions...... 252, 254
Trunk precautions................................. 43
Child-protectors ......................................38
Cigarette lighter.................................... 249B
C
Page 452 of 464

452
Alphabetical index
CleaningExterior ....................................................274
Interior ......................................................277
Seat belts................................................ 278
Clock ......................................................... 244
Coat hooks ..............................................259
Compass .................................................. 269
Condenser ............................................... 301
Console box ........................................... 237
Cooling system Engine overheating ......................... 400
Cornering assist sensors .................... 164
Cruise control Cruise control .......................................152
Dynamic radar cruise control ...... 155
Cup holder ..............................................239
Curtain shield airbags............................ 79
Customizable features ....................... 436 Daytime running light system ............144
Defogger
Rear window ....................................... 200
Side mirror............................................ 200
Dimension ............................................... 406
Dinghy towing............................... 188, 189
Display Dynamic radar cruise control ....... 155
Satellite switch mode....................... 245
Trip information.................................... 140
Warning message ............................ 369
Do-it-yourself maintenance ............. 286
Door courtesy lights Door courtesy lights .......................... 231
Wattage ................................................. 420
Door pockets ...........................................241
Doors Door glasses............................................64
Door lock .................................22, 34, 37
Side mirrors............................................... 61
Driver's seat belt reminder light ..... 362
Driving Correct posture..................................... 77
Procedures.............................................108
Driving position memory...................... 46D
Page 454 of 464

454
Alphabetical index
First-aid kit storage belt ...................... 261
Floor mat ..................................................260
FluidBrake......................................................... 301
Washer ...................................................305
Fog lights Switch ........................................................146
Wattage.................................................. 420
Foot well lighting .................................... 231
Front fog lights Switch ........................................................146
Wattage.................................................. 420
Front passenger occupant classification system ............................90
Front passenger's seat belt
reminder light...................................... 362
Front seats Adjustment............................................... 44
Driving position memory.................. 46
Seat position memory ........................ 49 Front turn signal lights
Switch ........................................................ 128
Wattage ................................................. 420
Fuel Capacity ................................................ 409
Fuel gauge .............................................. 130
Fuel pump shut off system .............357
Gas station information ................. 464
Information ............................................. 421
Refueling ....................................................69
Fuel door ..................................................... 69
Fuel filler door ........................................... 69
Fuel pump shut off system................. 357
Fuses .......................................................... 327
Garage door opener .......................... 264
Gas station information ..................... 464
Gauges ...................................................... 130
Glove box ................................................ 236
Glove box light ...................................... 237F
G