radiator Lexus IS F 2010 User Guide

5
When trouble arises
483
5-2. Steps to take in an emergency
10_IS F_U
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. Carefully lift the hood after the steam sub-
sides and then restart the engine.
If you do not see steam: Leave the engine running and carefully lift the hood.
Remove the engine compartment cover (front). ( →P. 373)
Check to see if the cooling fans are operating.
If the fans are operating: Wait until the temperature of the engine (shown on the
instrument cluster) begins to fall and then stop the engine.
If the fans are 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

484
5-2. Steps to take in an emergency
10_IS F_U
■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 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 fans and belt while the engine is running.
●Do not loosen the coolant reservoir cap while the engine and radiator are hot.
Serious injury, such as burns, may result from hot coolant and steam released
under pressure.
Add engine coolant if neces-
sary.
Water can be used in an emer-
gency measure if engine coolant
is unavailable. (→P. 4 9 3 )
Have the vehicle checked at your nearest Lexus dealer as soon as pos-
sible.
STEP6

534
Alphabetical index
10_IS F_U
Outside rear view mirrorsAdjusting and folding ......................... 67
Mirror position memory ................... 48
Outside temperature display.............147
Overhead console ................................ 312
Overhead courtesy lights
Overhead courtesy lights .............306
Wattage..................................................498
Overheating, Engine ...........................483
Parking assist sensors ............................ 171
Parking brake .......................................... 137
Parking lights Replacing light bulbs........................ 424
Switch ....................................................... 150
Wattage..................................................498
PCS ............................................................. 184
Personal lights Switch ..................................................... 308
Power outlet............................................ 324
Power windows ........................................ 69
Pre-collision system.............................. 184
Radar cruise control ...............................161
Radiator ................................................... 380
Radio ........................................................... 210
RDS ............................................................. 212
Rear turn signal lights
Replacing light bulbs........................ 424
Wattage..................................................498
Rear view mirror Compass ................................................. 341
Rear window de fogger.......................206 Replacing
Electronic key battery ..................... 406
Fuses........................................................ 408
Light bulbs .............................................424
Reporting safety defects for U.S. owners.......................................... 522
Safety connect ....................................... 345
Seat belts Adjusting the seat belt ....................... 58
Automatic locking retractor ........... 59
Child restraint system
installation ............................................106
Cleaning and maintaining
the seat belts .................................... 358
Emergency locking retractor......... 59
How to wear your seat belt .............57
How your child should wear
the seat belt.......................................... 60
Pregnant women,
proper seat belt use ........................ 59
Reminder light......................................444
Seat belt extenders.............................. 60
Seat belt pretensioners ..................... 58
Seat heaters ............................................ 325
Seat position memory............................ 52
Seating capacity....................................... 191
Seats Adjustment ............................................... 47
Adjustment precautions .................... 47
Child seats/child restraint system installation ............................106
Cleaning .................................................357
Driver’s seat position memory ...... 48
Front passenger seat position memory ..................................................52
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