2012 TOYOTA 4RUNNER cooling

626 5-2. Steps to take in an emergency
4RUNNER_U
CAUTION
■Avoiding battery fires or explosions
Observe the following precautions to prevent accidentally igniting the flam-
mable gas that may be emitted from the battery:
● Make sure each jumper cable is connected to the correct terminal and that
it is not unintentionally in contact with any other than the intended terminal.
● Do not allow the + and - clamps of the jumper cables to come into contact
with each other.
● Do not smoke, use matches, cigarette lighters or allow open flame near
the battery.
■ Battery precautions
The battery contains poisonous and corrosive acidic electrolyte, while
related parts contain lead and lead compounds. Observe the following pre-
cautions when handling the battery:
● When working with the battery, always wear safety glasses and take care
not to allow any battery fluids (acid) to come into contact with skin, clothing
or the vehicle body.
● Do not lean over the battery.
● In the event that battery fluid comes into contact with the skin or eyes,
immediately wash the affected area with water and seek medical attention.
Place a wet sponge or cloth over the affected area until medical attention
can be received.
● Always wash your hands after handling the battery support, terminals, and
other battery-related parts.
● Do not allow children near the battery.
NOTICE
■When handling jumper cables
When connecting the jumper cables, ensure that they do not become entan-
gled in the cooling fans or belt.

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

639
6-1. Specifications
6
Vehicle specifications
4RUNNER_U
Cooling system
Ignition system
Capacity11.1 qt. (10.5 L, 9.2 Imp. qt.)
Coolant type
Use either of the following:
• “Toyota Super Long Life Coolant”
• A similar high-quality ethylene glycol-based non-silicate, non-amine, non-
nitrite, and non-borate coolant with long-
life hybrid organic acid technology
Do not use plain water alone.
Spark plug
Make
GapDENSO SK20HR11
0.043 in. (1.1 mm)
NOTICE
■ Iridium-tipped spark plugs
Use only iridium-tipped spark plugs. Do not adjust the spark plug gap.

688 Alphabetical index
4RUNNER_U
Child safetyAirbag precautions ................128
Battery precautions ....... 534, 626
Child-protectors ....................... 55
Child restraint system............142
How your child should wear the seat belt ..........................89
Installing child restraints ........ 146
Moon roof precautions .......... 108
Power window lock switch....... 98
Power window precautions ...100
Removed key battery precautions .........................554
Seat belt extender precautions ...........................91
Seat belt precautions ..............90
Seat heater precautions ........ 470
Cleaning
Exterior .................................. 502
Interior ...................................505
Seat belts ..............................506
Clock ......................................... 455
Coin holder ............................... 444
Compass ...................................474
Condenser ................................527
Console box ............................. 443
Cooling system Engine overheating ............... 627
Crawl Control ...........................254
Cruise control...........................217
Cup holder ................................448
Curtain shield airbags ............. 121
Customizable features............. 660 Daytime running light
system .................................... 207
Defogger
Rear window ......................... 328
Side mirrors........................... 328
Dimension ................................ 634
Dinghy towing .......................... 311
Display Trip information ..................... 200
Do-it-yourself maintenance .... 516
Door courtesy lights Door courtesy lights .............. 438
Wattage................................. 644
Door lock Back door .......................... 35, 63
Side door........................... 35, 53
Wireless remote control .......... 49
Doors
Back door .......................... 35, 63
Door windows ......................... 98
Side door........................... 35, 53
Side mirrors............................. 96
Downhill assist control system .................................... 251
Driver’s seat belt reminder
light ......................................... 591
Driving Break-in tips .......................... 161
Correct posture ..................... 119
Driving assist systems .......... 266
Off-road precautions ............. 275
Procedures............................ 160
Winter driving tips ................. 288D