2010 TOYOTA 4RUNNER cooling

602 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
603
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.
Remove the engine compartment cover. (
P. 497)
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.
STEP 1
STEP 2
STEP 3
STEP 4
CTH52AS043
STEP 5

616 6-1. Specifications
4RUNNER_U
Cooling system
Ignition system
Capacity
2.7 L 4-cylinder (2TR-FE) engine
8.6 qt. (8.1 L, 7.1 Imp. qt.)
4.0 L V6 (1GR-FE) engine
11.1 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.

654 Alphabetical index
4RUNNER_U
Clock ......................................... 431
Coin holder ............................... 419
Compass ...................................450
Condenser ................................504
Console box ............................. 418
Cooling systemEngine overheating ............... 603
Crawl Control ...........................241
Cruise control...........................209
Cup holder ................................423
Curtain shield airbags ............. 114
Customizable features............. 638
Daytime running light system .................................... 202
Defogger Rear window .........................310
Side mirrors ...........................310
Dimension.................................610
Dinghy towing .......................... 293
Display Trip information ..................... 195
Do-it-yourself main tenance..... 491
Door courtesy lights
Door courtesy lights ..............413
Wattage .................................622
Door lock
Back door ..........................33, 56
Side door ........................... 33, 51
Wireless remote control .......... 47
Doors Back door ..........................33, 56
Door glasses ...........................91
Side door ........................... 33, 51
Side mirrors .............................89
Downhill assist control
system .................................... 238
Driver’s seat belt reminder light ......................................... 568 Driving
Break-in tips .......................... 155
Correct posture ..................... 112
Driving assist systems .......... 253
Off-road precautions ............. 262
Procedures............................ 154
Winter driving tips ................. 275
Electronic key If your electronic key battery is depleted ...... 528, 596
Emergency flashers Switch ................................... 554
Emergency, in case of
If the electronic key does not operate properly ........... 596
If the engine will not start ...... 590
If the shift lever cannot be
shifted from P ..................... 592
If the vehicle has a discharged battery ............. 598
If the warning buzzer sounds ................................ 565
If the warning light turns on ... 565
If you cannot operate back
door opener ........................ 595
If you have a flat tire ............. 578
If you lose your keys ............. 594
If you think something is wrong .................................. 561
If your vehicle becomes stuck ................................... 606
If your vehicle needs to be
towed .................................. 555
If your vehicle overheats ....... 603
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