2008 TOYOTA 4RUNNER radiator cap

394
If engine speed does not increase when
the accelerator pedal is depressed, there
may be a problem somewhere in the elec-
tronic throttle control system.
At this time, vibration may occur. Howev-
er, if you depress the accelerator pedal
more firmly and slowly, you can drive your
vehicle at low speeds. Have your vehicle
checked by your Toyota dealer as soon as
possible.
Even if the abnormality of the electronic
throttle control system is corrected during
low speed driving, the system may not be
recovered until the engine is stopped and
the engine switch is turned to the ACC"
or LOCK" position.
CAUTION
Be especially careful to prevent erro-
neous pedal operation.
If your engine coolant temperature
gauge indicates overheating, if you ex-
perience a loss of power, or if you hear
a loud knocking or pinging noise, the
engine has probably overheated. You
should follow this procedure...1. Pull safely off the road, stop the ve- hicle and turn on your emergency
flashers. Put the transmission in P"
and apply the parking brake. Turn off
the air conditioning if it is being used.
2. If coolant or steam is boiling out of the radiator or reservoir, stop the engine.
Wait until the steam subsides before
opening the hood. If there is no coolant
boiling over or steam, leave the engine
running.
CAUTION
To help avoid personal injury, keep
the hood closed until there is no
steam. Escaping steam or coolant is
a sign of very high pressure.
3. Look for obvious coolant leaks from theradiator, hoses, and under the vehicle.
However, note that water draining from
the air conditioning is normal if it has
been used.
CAUTION
When the engine is running, keep
hands and clothing away from the
moving fan and engine drive belts.
4. If the engine drive belt is broken or thecoolant is leaking, stop the engine im-
mediately. Call a Toyota dealer for as-
sistance.
5. If the engine drive belt is O.K. and there are no obvious leaks, you may
help the engine cool down more quickly
by running it at about 1500 rpm for a
few minutes with the accelerator pedal
lightly depressed.
6. Check the coolant reservoir. If it is dry, add coolant to the reservoir while the
engine is running. Fill it about half full.
For the coolant type, see Coolant type
selection" on page 438 in Section 7−2.
If you cannot increase engine
speed If your vehicle overheats

395
CAUTION
Do not attempt to remove the radiator
cap when the engine and radiator are
hot. Serious injury could result from
scalding hot fluid and steam blown
out under pressure.
7. After the engine coolant temperaturehas cooled to normal, again check the
coolant level in the reservoir. If neces-
sary, bring it up to half full again. Seri-
ous coolant loss indicates a leak in the
system. You s hould have it checked as
soon as possible at your Toyota dealer.
1. Reduce your speed gradually, keeping a straight line. Move cau-
tiously off the road to a safe place
well away from the traffic. Avoid
stopping on the center divider of
a highway. Park on a level spot
with firm ground.
2. Stop the engine and turn on your emergency flashers.
3. Firmly set the parking brake and put the transmission in P".
4. Have everyone get out of the ve- hicle on the side away from traffic.
5. Read the following instructions thoroughly.CAUTION
When jacking, be sure to observe
the following to reduce the possi-
bility of death or serious injury:
Follow jacking instructions.
 Do not put any part of your
body under the vehicle sup-
ported by the jack. Otherwise,
personal injury may occur.
 Do not start or run the engine
while your vehicle is supported
by the jack.
 S t o p th e veh i cl e on a level fi rm
ground, firmly set the parking
brake and put the transmission
in P". Block the wheel diago-
nally opposite to the one being
changed if necessary.
If you have a flat tire

428
1. Windshield and back window washerfluid tank
2. Power steering fluid reservoir
3. Engine oil level dipstick
4. Engine coolant reservoir
5. Engine oil filler cap
6. Brake fluid reservoir
7. Fuse block
8. Battery
9. Condenser
10. Radiator
Engine compartment overview
 4.0 L V6 (1GR−FE) engine
CY71024y

429
1. Windshield and back window washerfluid tank
2. Power steering fluid reservoir
3. Engine coolant reservoir
4. Engine oil level dipstick
5. Engine oil filler cap
6. Brake fluid reservoir
7. Fuse block
8. Battery
9. Condenser
10. Radiator

4.7 L V8 (2UZ−FE) engine
CY71032y

431
CAUTION
When the engine is running, keep
hands, clothing, and tools away
from the moving fan and engine
drive belts. (Removing rings,
watches, and ties is advisable.)
Right after driving, the engine
compartmentthe engine, radiator,
exhaust manifold, power steering
fluid reservoir and spark plug
boots, etc.will be hot. So be care-
ful not to touch them. Oil, fluids
and spark plugs may also be hot.
If the engine is hot, do not remove
the radiator cap or loosen the drain
plugs to prevent burning yourself.
Do not leave anything that may
burn easily, such as paper or rags,
in the engine compartment.
Do not smoke, cause sparks or al-
low open flames around fuel or the
battery. Their fumes are flammable.
Do not get under your vehicle with
just the body jack supporting it. Al-
ways use automotive jack stands or
other solid supports.
Use eye protection whenever you
work on or under your vehicle
where you may be exposed to flying
or falling material, fluid spray, etc.
Used engine oil contains potentially
harmful contaminants which may
cause skin disorders such as in-
flammation or skin cancer, so care
should be taken to avoid prolonged
and repeated contact with it. To re-
move used engine oil from your
skin, wash thoroughly with soap
and water.
Do not leave used oil within the
reach of children.
Dispose of used oil and filter only
in a safe and acceptable manner.
Do not dispose of used oil and fil-
ter in household trash, in sewers or
onto the ground. Call your dealer or
a service station for information
concerning recycling or disposal.
Be extremely cautious when work-
ing on the battery. It contains poi-
sonous and corrosive sulfuric acid.
NOTICE
Remember that battery and ignition
cables carry high currents or volt-
ages. Be careful of accidentally
causing a short circuit.
 Add only Toyota Super Long Life
Coolant" or similar high quality eth-
ylene glycol based non−silicate,
non−amine, non−nitrite, and non−bo-
rate coolant with long−life hybrid
organic acid technology to fill the
radiator. Toyota Super Long Life
Coolant" is a mixture of 50% cool-
ant and 50% deionized water (for
the U.S.A.) or 55% coolant and 45%
deionized water (for Canada).
 If you spill some of the coolant, be
sure to wash it off with water to
prevent it from damaging the parts
or paint.
 Do not allow dirt or anything else
to fall through the spark plug holes.
 Do not pry the outer electrode of a
spark plug against the center elec-
trode.

438
To ensure excellent lubrication perfor-
mance for your engine, Toyota Genuine
Motor Oil" is available, which has been
specifically tested and approved for all
Toyota engines.
Please contact your Toyota dealer for fur-
ther details about Toyota Genuine Motor
Oil".Look at the see−through coolant reser-
voir when the engine is cold. The cool-
ant level is satisfactory if it is between
the F" and L" lines on the reservoir.
If the level is low, add the coolant. (For
the coolant type, see Coolant type
selection" described below.)
The coolant level in the reservoir will vary
with engine temperature. However, if the
level is on or below the L" line, add
coolant. Bring the level up to the F" line.
If the coolant level drops within a short
time after replenishing, there may be a
leak in the system. Visually check the
radiator, hoses, radiator cap and drain
cock and water pump.
If you can find no leak, have your Toyota
dealer test the cap pressure and check
for leaks in the cooling system.
CAUTION
To prevent burning yourself, do not
remove the radiator cap when the en-
gine is hot.
Coolant type selection
Use of improper coolants may damage
your engine cooling system.
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. (Coolant
with long−life hybrid organic acid
technology is a combination of low
phosphates and organic acids.)
For the U.S.A.Toyota Super Long Life
Coolant" is a mixture of 50% coolant and
50% deionized water. This coolant pro-
vides protection down to about −35
C
(−31 F).
For CanadaToyota Super Long Life
Coolant" is a mixture of 55% coolant and
45% deionized water. This coolant pro-
vides protection down to about −42 C
(−44 F).
NOTICE
Do not use plain water alone.
Checking the engine coolant
level

476 A
AUTO LSD" system180
. . . . . . . . . . . . . . . . . .
Active traction control system 178
. . . . . . . . .
Adding washer fluid 453
. . . . . . . . . . . . . . . . . .
Adjustment
Front seats 44,45
. . . . . . . . . . . . . . . . . . . . . .
Rear seats 53
. . . . . . . . . . . . . . . . . . . . . . . . .
Seat belt 64
. . . . . . . . . . . . . . . . . . . . . . . . . . .
Air conditioning filter 300
. . . . . . . . . . . . . . . . . .
Air conditioning system 290,293
. . . . . . . . . . .
Airbags 74,81,91
. . . . . . . . . . . . . . . . . . . . . . . . .
Aluminum wheel precautions 448
. . . . . . . . . .
Anti−glare inside rear view mirror 123 . . . . . .
Anti−lock brake system warning light 149
. . . . . . . . . . . . . . . . . . . . . . .
Anti−theft steering column lock 162 . . . . . . . .
Appearance care
Cleaning the interior 417
. . . . . . . . . . . . . . . .
Protecting your Toyota from corrosion 414
. . . . . . . . . . . . . . . . . . . . . . . .
Rain clearing mirrors 419
. . . . . . . . . . . . . . .
Washing and waxing 415
. . . . . . . . . . . . . . . .
Armrest 63
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Audio remote controls 238
. . . . . . . . . . . . . . . .
Audio system 208
. . . . . . . . . . . . . . . . . . . . . . . .
Audio system
AUX 239
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Audio/video system 240
. . . . . . . . . . . . . . . . . .
Audio/video system operating tips 280 . . . . . .
Auto anti−glare inside rear view mirror
Compass 307
. . . . . . . . . . . . . . . . . . . . . . . . . .
Automatic door locking and unlocking functions 25
. . . . . . . . . . . . . . . . . . Automatic transmission
Driving with an automatic transmission 163
. . . . . . . . . . . . . . . . . . . . .
Shift lock override button 410
. . . . . . . . . . . .
Shift pattern 163
. . . . . . . . . . . . . . . . . . . . . . .
Shifting speed 163
. . . . . . . . . . . . . . . . . . . . .
Automatic transmission fluid temperature warning light 149
. . . . . . . . . . .
AUX 239
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Auxiliary boxes 322
. . . . . . . . . . . . . . . . . . . . . .
Auxiliary catch, Engine hood 34
. . . . . . . . . . .
B
Back door 32
. . . . . . . . . . . . . . . . . . . . . . . . . . . .
Back door lock 32
. . . . . . . . . . . . . . . . . . . . . . . .
Back window and outside rear view mirror defogger switch 142
. . . . . . . . .
Back window wiper and washer switch 141
. . . . . . . . . . . . . . . . . . . . .
Battery
Checking battery condition 450
. . . . . . . . . .
Gas caution 450
. . . . . . . . . . . . . . . . . . . . . . .
Handling safety 450
. . . . . . . . . . . . . . . . . . . .
Recharging precautions 451
. . . . . . . . . . . . .
Winter driving tips 375
. . . . . . . . . . . . . . . . . .
Before starting the engine 370
. . . . . . . . . . . . .
Bottle holders 330
. . . . . . . . . . . . . . . . . . . . . . . .
Brake pad wear limit indicators 349 . . . . . . . .
Brake system 345
. . . . . . . . . . . . . . . . . . . . . . . .
Brake system warning buzzer 149
. . . . . . . . .
Brake system warning light 149
. . . . . . . . . . . . Brakes
Fluid level 439
. . . . . . . . . . . . . . . . . . . . . . . . .
Pad wear limit indicators 349
. . . . . . . . . . . .
Parking 202
. . . . . . . . . . . . . . . . . . . . . . . . . . .
Break−in tips 339
. . . . . . . . . . . . . . . . . . . . . . . .
Brightness control 135
. . . . . . . . . . . . . . . . . . . .
C
Carbon monoxide caution 343
. . . . . . . . . . . . .
Cargo and luggage
Capacity 364
. . . . . . . . . . . . . . . . . . . . . . . . . .
Capacity and distribution 366
. . . . . . . . . . . .
Stowage precautions 365
. . . . . . . . . . . . . . .
Cargo net hooks 332
. . . . . . . . . . . . . . . . . . . . .
Center vents 299
. . . . . . . . . . . . . . . . . . . . . . . . .
Certification label 349
. . . . . . . . . . . . . . . . . . . .
Charging system warning light 149
. . . . . . . . .
Checking and replacing fuses 452
. . . . . . . . .
Checking and replacing the air
conditioning filter 300
. . . . . . . . . . . . . . . . . . .
Checking brake fluid 439
. . . . . . . . . . . . . . . . . .
Checking the engine oil level 436
. . . . . . . . . .
Checking the radiator and
condenser 439
. . . . . . . . . . . . . . . . . . . . . . . . .
Child restraint
Child restraint system 97
. . . . . . . . . . . . . . .
Installation 99
. . . . . . . . . . . . . . . . . . . . . . . . .
Installation with child restraint lower anchorages 114,116
. . . . . . . . . . . .
Precautions 96
. . . . . . . . . . . . . . . . . . . . . . . .
Types of child restraint system 98 . . . . . . . .
Using a top strap 109,112
. . . . . . . . . . . . . . .

477
Cleaning the interior417
. . . . . . . . . . . . . . . . . .
Clock 305
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Coin holder 326
. . . . . . . . . . . . . . . . . . . . . . . . . .
Cold weather
Operation 375
. . . . . . . . . . . . . . . . . . . . . . . . .
Compact disc changer 208
. . . . . . . . . . . . . . . .
Compact disc changer controller 208 . . . . . . .
Compact disc player 208
. . . . . . . . . . . . . . . . . .
Compass 307
. . . . . . . . . . . . . . . . . . . . . . . . . . . .
Condenser
Checking the condenser 439
. . . . . . . . . . . .
Console box
Rear 324
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Controls, Instrument panel 2,6
. . . . . . . . . . . .
Cooling system
Coolant level 438
. . . . . . . . . . . . . . . . . . . . . .
Engine overheating 394
. . . . . . . . . . . . . . . . .
Radiator and reservoir 438
. . . . . . . . . . . . . .
Radiator cap 394
. . . . . . . . . . . . . . . . . . . . . . .
Winter driving tips 375
. . . . . . . . . . . . . . . . . .
Corrosion prevention 414
. . . . . . . . . . . . . . . . .
Cranking hold function 370
. . . . . . . . . . . . . . . .
Cruise control 203
. . . . . . . . . . . . . . . . . . . . . . .
Cruise information display 306
. . . . . . . . . . . . .
Cup holder
Front 327
. . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Rear 328,330
. . . . . . . . . . . . . . . . . . . . . . . . . . D
Defogger
Back window 142 . . . . . . . . . . . . . . . . . . . . . .
Outside rear view mirror 142 . . . . . . . . . . . .
Differential, Limited slip 349 . . . . . . . . . . . . . . .
Dimmer switch, Headlight 130,132 . . . . . . . . .
Dinghy towing 376 . . . . . . . . . . . . . . . . . . . . . . .
Directional signals 130,132 . . . . . . . . . . . . . . .
Do−it−yourself maintenance
Parts and tools 432 . . . . . . . . . . . . . . . . . . . . .
Service precautions 430 . . . . . . . . . . . . . . . .
Does your vehicle need repairing? 425 . . . . . . . . . . . . . . . . . . . . . . . . .
Doors
Side doors 22 . . . . . . . . . . . . . . . . . . . . . . . . .
Double deck 333 . . . . . . . . . . . . . . . . . . . . . . . . .
Downhill assist control system 186 . . . . . . . . .
Driver ’s seat belt reminder buzzer 149 . . . . . .
Driver ’s seat belt reminder light 149 . . . . . . . .
Driving
Automatic transmission 163 . . . . . . . . . . . . .
Driving tips 370 . . . . . . . . . . . . . . . . . . . . . . . .
Driving in the rain 373 . . . . . . . . . . . . . . . . . . . .
Driving position memory system 48 . . . . . . . .
Driving tips
Driving in the rain 373 . . . . . . . . . . . . . . . . . .
Driving tips in various conditions 371 . . . . .
Driving with an automatic transmission 163 . . . . . . . . . . . . . . . . . . . . .
Economical driving 386 . . . . . . . . . . . . . . . . .
Good driving practice 163 . . . . . . . . . . . . . . .
Winter driving tips 375 . . . . . . . . . . . . . . . . . .
During
Break−in 339 . . . . . . . . . . . . . . . . . . . . . . . . . .
DVD player 240 . . . . . . . . . . . . . . . . . . . . . . . . . .
E
Economical driving
Saving money on both fuel and repairs 386 . . . . . . . . . . . . . . . . . . . . . . . . . .
Electric moon roof 39 . . . . . . . . . . . . . . . . . . . . .
Electrical system
Battery 450,451 . . . . . . . . . . . . . . . . . . . . . . . .
Fuse locations 430 . . . . . . . . . . . . . . . . . . . . .
Fuses 452 . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Emergency flasher switch 135 . . . . . . . . . . . . .
Emergency, In case of
Blown fuse 452 . . . . . . . . . . . . . . . . . . . . . . . .
Emergency flasher switch 135 . . . . . . . . . . .
Flat tire 395 . . . . . . . . . . . . . . . . . . . . . . . . . . .
If you cannot increase engine speed 394 . . . . . . . . . . . . . . . . . . . . . . . . . . .
If you cannot shift automatic transmission selector lever 410 . . . . . . . .
If you lose your keys 411 . . . . . . . . . . . . . . . .
If you lose your wireless remote control transmitter 411 . . . . . . . . . . . . . . . .
If your engine stalls while driving 393 . . . . . . . . . . . . . . . . . . . . . . . . . .
If your vehicle becomes stuck 405 . . . . . . .
If your vehicle needs to be towed 405 . . . . . . . . . . . . . . . . . . . . . . . . . . .
If your vehicle will not start 390 . . . . . . . . . .
Jump starting 391 . . . . . . . . . . . . . . . . . . . . . .
Overheating 394 . . . . . . . . . . . . . . . . . . . . . . .
Towing 405 . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Emissions Inspection and
Maintenance (I/M) programs 426 . . . . . . . . .