2011 Lexus IS F radiator cap

384
4-3. Do-it-yourself maintenance
Engine compartment
Battery (P. 393)
Engine oil level dipstick (P. 386)
Engine oil filler cap (P. 386)
Brake fluid reservoir (P. 391)
Fuse boxes ( P. 4 1 9 )Washer fluid tank
(P. 396)
Electric cooling fans
Condenser ( P. 391)
Radiator ( P. 391)
Engine coolant reservoir (P. 389)

390
4-3. Do-it-yourself maintenance
■If the coolant level drops within a short time after replenishing
Visually check the radiator, hoses, coolant reservoir cap, drain cock and water
pump.
If you cannot find a leak, have your Lexus dealer test the cap and check for leaks in
the cooling system.
■Coolant selection
Only use “Toyota Super Long Life Coolant” or similar high-quality ethylene glycol-
based non-silicate, non-amine, non-nitrite, and non-borate coolant with long-life
hybrid organic acid technology.
U.S.A.: “Toyota Super Long Life Coolant” is a mixture of 50% coolant and 50%
deionized water. (Enabled: -31F [-35 C])
Canada: “Toyota Super Long Life Coolant” is a mixture of 55% coolant and 45% deionized water. (Enabled: -44 F [-42C])
For more details about engine coolant, contact your Lexus dealer.
CAUTION
■When the engine is hot
Do not remove the coolant reservoir cap.
The cooling system may be under pressure and may spray hot coolant if the cap is
removed, causing burns or other injuries.
NOTICE
■When adding engine coolant
Coolant is neither plain water nor straight antifreeze. The correct mixture of water
and antifreeze must be used to provide proper lubrication, corrosion protection
and cooling. Be sure to read the antifreeze or coolant label.
■If you spill coolant
Be sure to wash it off with water to prevent damage to parts or paint.

496
5-2. Steps to take in an emergency
■Overheating
If you observe the following, your vehicle may be overheating.
●The display on the engine coolant temperature gauge flashes 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 compartm ent may be very hot, causing serious
injury such as burns.
●Keep hands and clothing away from the fa ns 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 resu lt 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. 5 0 7 )
Have the vehicle checked at your nearest Lexus dealer as soon as pos-
sible.
STEP6

560
Alphabetical index
Radar cruise control ............................. 169
Radiator ..................................................... 391
Radio .......................................................... 223
RDS ............................................................ 225
Rear turn signal lightsReplacing light bulbs........................ 435
Wattage....................................................512
Rear view mirror Compass ............................................... 354
Rear window defogger........................ 218
Replacing Electronic key battery........................ 417
Fuses ..........................................................419
Light bulbs............................................. 435
Reporting safety defects for U.S. owners ..........................................536
Safety connect ...................................... 358
Seat belts Adjusting the seat belt.......................... 61
Automatic locking retractor............ 62
Child restraint system installation ..............................................112
Cleaning and maintaining the seat belts ..................................... 370
Emergency locking retractor ......... 62
How to wear your seat belt............. 60
How your child should wear the seat belt .......................................... 63
Pregnant women, proper seat belt use......................... 62
Reminder light .....................................456
Seat belt extenders .............................. 63
Seat belt pretensioners ........................ 61 Seat heaters ............................................ 338
Seat position memory............................ 55
Seating capacity.................................... 203
Seats
Adjustment .............................................. 50
Adjustment precautions ................... 50
Child seats/child restraint system installation.............................. 112
Cleaning ................................................ 369
Driver’s seat position memory ........ 51
Front passenger seat position memory ................................................. 55
Head restraints ....................................... 57
Properly sitting in the seat................ 89
Seat heaters ......................................... 338
Service reminder indicators ............ 150
Shift lever If the shift lever cannot be shifted from P................................... 487
Transmission.......................................... 134
Shift lever light .........................................319
Shift lock system.................................... 487
Shopping bag hooks ........................... 345
Side airbags .................................................91
Side marker lights Switch ........................................................158
Side mirrors Adjusting and folding ............................71
Mirror position memory ..................... 51
Smart access system with push-button startEntry function ..........................................28
Starting the engine.............................. 130
“SOS” button..........................................358R
S