radiator cap Lexus GX460 2010 Using The Bluetooth Audio System /

608
4-3. Do-it-yourself maintenance
GX460_U.S.A. (OM60E69U)
Engine compartment
Engine coolant reservoir
( P. 615)
Engine oil level dipstick 
( P. 610)
Engine oil filler cap 
( P. 611)
Brake fluid reservoir 
( P. 6 1 8 )Fuse box ( P. 645)
Battery ( P. 622)
Radiator ( P. 617)
Condenser ( P. 617)
Electric cooling fan
Washer fluid tank ( P. 6 2 6 )
Power steering fluid reservoir 
( P. 6 2 0 )

616
4-3. Do-it-yourself maintenance
GX460_U.S.A. (OM60E69U)
■If the coolant level drops within a short time after replenishing
Visually check the radiator, hoses, engine coolant reservoir caps, 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.
CAUTION
■When the engine is hot
Do not remove the engine 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 the 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 it damage to parts or paint.

746
5-2. Steps to take in an emergency
GX460_U.S.A. (OM60E69U)
■Overheating
In the following situations, 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
●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 fan and engine drive 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.
NOTICE
■When adding engine coolant
Wait until the engine has cooled down before adding coolant.
When adding coolant, do so slowly. Adding cold coolant to a hot engine too quickly
can cause damage to the engine.

816
Alphabetical index
GX460_U.S.A. (OM60E69U)
Parking assist sensors .........................259
Parking brake .......................................... 193
Parking lightsReplacing light bulbs........................665
Switch ...................................................... 220
Wattage.................................................... 761
PCS ........................................................... 338
Personal lights Personal lights ........................................ 511
Switch ........................................................513
Wattage.................................................... 761
Power steering Fluid ..........................................................620
Power outlet.....................535, 537, 542
Power windows ........................................101
Pre-Collision System ......................... 338
Radar cruise control ............................ 246
Radiator ......................................................617
Radio ......................................................... 408
RDS (Radio Date System) ................. 410
Rear height control 
air suspension ...................................... 310
Rear seat Adjustment............................................... 68
Folding down the second 
seatbacks ....................................... 70, 71
Folding down the third seats ...........73
Rear side marker lights Replacing light bulbs........................ 667
Wattage.................................................... 761
Rear step bumper....................................55
Rear turn signal lights Replacing light bulbs........................ 667
Wattage.................................................... 761 Rear view mirror
Compass ............................................... 575
Rear view monitor system .................274
Rear window defogger ...................... 404
Rear window wiper and washer ..... 239
Replacing Electronic key battery ......................642
Fuses ........................................................ 645
Light bulbs ............................................ 660
Tires...........................................................720
Reporting safety defects for 
U.S. owners..........................................804
Scuff lighting .............................................. 511
Seat belts Adjusting the seat belt ........................87
Automatic Locking Retractor ........ 88
Child restraint system 
installation ............................................ 152
Cleaning and maintaining 
the seat belts .................................... 593
Emergency Locking 
Retractor ............................................... 88
How to wear your seat belt ............ 86
How your child should wear 
the seat belt.......................................... 89
Pre-collision seat belts....................... 88
Pregnant women, 
proper seat belt use ........................ 89
Reminder light..................................... 690
Seat belt extenders.............................. 90
Seat belt pretensioners ....................... 91
Seat heaters ............................................. 551
Seat position memory............................ 79
Seat ventilator ......................................... 551
Seating capacity.................................... 359P
R
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