2012 TOYOTA 4RUNNER radiator

527
4-3. Do-it-yourself maintenance
4
Maintenance and care
4RUNNER_U
Radiator and condenser
Check the radiator and condenser and clear away any foreign
objects.
If either of the above parts is extremely dirty or you are not sure of
their condition, have y our vehicle inspected by your Toyota dealer.
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 serious injuries, such as burns.
NOTICE
■When adding coolant
Coolant is neither plain water nor stra ight 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 from damaging parts or paint.
CAUTION
■When the engine is hot
Do not touch the radiator or condenser as they may be hot and cause seri-
ous injuries, such as burns.

5
When trouble arises
627
5-2. Steps to take in an emergency
4RUNNER_U
If your vehicle overheats
If your engine overheats:Stop the vehicle in a safe place and turn off the air condi-
tioning 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.
Check to see if the cooling fan is operating.
If the fan is operating:
Wait until the temperature of the engine (shown on the
instrument panel) begins to fall and then stop the engine.
If the fan is not operating:
Stop the engine immediately and call your Toyota dealer. After the engine has cooled
down sufficiently, check the
engine coolant level and
inspect the radiator core (radi-
ator) for any leaks.
If the engine compartment
cover needs to be removed.
( P. 521)
STEP 1
STEP 2
STEP 3
CTH52AS043
STEP 4

628 5-2. Steps to take in an emergency
4RUNNER_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 comes out 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, caus-
ing serious injuries such as burns.
● Keep hands and clothing away from the fan and drive belt while the engine
is running.
● Do not loosen the radiator cap, or 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 if engine coolant is
unavailable.
( P. 639)
Have the vehicle inspected at the nearest Toyota dealer as soon as
possible.
CTH52AS033
STEP 5

692 Alphabetical index
4RUNNER_U
Odometer .................................. 186
Off-road precautions ............... 275
OilEngine oil ..............................522
Opener Fuel filler door ....................... 109
Hood......................................519
Outside rear view mirrors Adjusting and folding ............... 96
Outside temperature display .................................... 457
Overhead console .................... 447
Overheating, Engine ................627
Parking brake ...........................184
Parking lights Replacing light bulbs ............. 565
Switch.................................... 203
Wattage .................................644
Party mode switch ...................380
Pen holder ................................446
Personal lights Switch.................................... 439
Wattage .................................644
Power back window .................101
Power outlets ...................460, 463
Power steering Fluid ......................................530
Power windows ..........................98 Radiator .................................... 527
Radio ......................................... 338
Rear differential lock
system .................................... 248
Rear seats Adjustment .............................. 72
Folding down............... 74, 76, 79
Rear step bumper ...................... 64
Rear turn signal lights Replacing light bulbs ............. 565
Wattage................................. 644
Rear view monitor system ...... 226
Rear window............................. 101
Rear window defogger ............ 328
Rear window wiper .................. 214
Replacing
Fuses .................................... 555
Key battery ............................ 552
Light bulbs............................. 565
Tires ...................................... 603
Reporting safety defects for U.S. owners ...................... 668
Reset the maintenance data ... 509
Roll sensing of curtain shield airbags off switch ...... 134
Roof luggage carrier................ 280O
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