2008 TOYOTA 4RUNNER heating

387

Avoid long engine idling.
If you have
a long wait and you are not in traffic,
it is better to turn off the engine and
start again later.
Avoid engine lugging or over−rev-
ving. Use a gear position suitable for
the road on which you are travelling.
Avoid continuous speeding up and
slowing down. Stop−and−go driving
wastes fuel.
Avoid unnecessary stopping and
braking. Maintain a steady pace. Try
to time the traffic signals so you only
need to stop as little as possible or
take advantage of through streets to
avoid traffic lights. Keep a proper dis-
tance from other vehicles to avoid sud-
den braking. This will also reduce wear
on your brakes.
Avoid heavy traffic or traffic jams
whenever possible.
Do not rest your foot on the brake
pedal. This causes premature wear,
overheating and poor fuel economy.
Maintain a moderate speed on high-
ways. The faster you drive, the greater
the fuel consumption. By reducing your
speed, you will cut down on fuel con-
sumption.
Keep the front wheels in proper
alignment. Avoid hitting the curb and
slow down on rough roads. Improper
alignment not only causes faster tire
wear but also puts an extra load on
the engine, which, in turn, wastes fuel.
Keep the bottom of your vehicle free
from mud, etc. This not only lessens
weight but also helps prevent corro-
sion.
Keep your vehicle tuned−up and in
top shape. A dirty air cleaner,
improper valve clearance, dirty plugs,
dirty oil and grease, brakes not
adjusted, etc. all lower engine
performance and contribute to poor fuel
economy. For longer life of all parts
and lower operating costs, keep all
maintenance work on schedule, and if
you often drive under severe
conditions, see that your vehicle
receives more frequent maintenance.
(For scheduled maintenance
information, please refer to the
Scheduled Maintenance Guide" or
Owner ’s Manual Supplement".)
CAUTION
Never turn off the engine to coast
down hills. Your power steering and
brake booster will not function with-
out the engine running. Also, the
emission control system operates
properly only when the engine is run-
ning.

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

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 . . . . . . . . .

478
EngineBefore starting the engine 370 . . . . . . . . . . .
Checking the coolant level 438 . . . . . . . . . .
Emission control device 342 . . . . . . . . . . . . .
Engine compartment 428 . . . . . . . . . . . . . . .
Exhaust gas caution 343 . . . . . . . . . . . . . . . .
Hood release 34 . . . . . . . . . . . . . . . . . . . . . . .
Identification number 350 . . . . . . . . . . . . . . .
Oil consumption 344 . . . . . . . . . . . . . . . . . . . .
Oil level 436 . . . . . . . . . . . . . . . . . . . . . . . . . . .
Overheating 394 . . . . . . . . . . . . . . . . . . . . . . .
Starting procedure 370 . . . . . . . . . . . . . . . . .
Three−way catalytic converters 342 . . . . . .
Engine coolant
Temperature gauge 146 . . . . . . . . . . . . . . . . .
Winter driving tips 375 . . . . . . . . . . . . . . . . . .
Engine coolant temperature gauge 146 . . . . .
Engine immobilizer system 14 . . . . . . . . . . . . .
Engine oil
Winter driving tips 375 . . . . . . . . . . . . . . . . . .
Engine oil replacement reminder light 149 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Engine switch 162 . . . . . . . . . . . . . . . . . . . . . . . .
Engine switch light 139 . . . . . . . . . . . . . . . . . . .
Exhaust gas caution 343 . . . . . . . . . . . . . . . . . .
F
Facts about engine oil
consumption 344 . . . . . . . . . . . . . . . . . . . . . . .
Flasher, Headlight 130,132 . . . . . . . . . . . . . . . .
Flat tire
After changing wheels 404 . . . . . . . . . . . . . .
Changing tire 401 . . . . . . . . . . . . . . . . . . . . . . If you have a flat tire 395
. . . . . . . . . . . . . . . .
Jack point 399 . . . . . . . . . . . . . . . . . . . . . . . . .
Jacking precautions 395 . . . . . . . . . . . . . . . .
Jacking up 400 . . . . . . . . . . . . . . . . . . . . . . . .
Loosening wheel nuts 399 . . . . . . . . . . . . . . .
Lowering vehicle 403 . . . . . . . . . . . . . . . . . . .
Reinstalling w heel ornament 403 . . . . . . . . .
Removing wheel ornament 398 . . . . . . . . . .
Wheel block 398 . . . . . . . . . . . . . . . . . . . . . . .
Wheel nuts 402 . . . . . . . . . . . . . . . . . . . . . . . .
Floor mat 336 . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Fluid level
Brake 439 . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Power steering 440 . . . . . . . . . . . . . . . . . . . . .
Washer fluid 453 . . . . . . . . . . . . . . . . . . . . . . .
Fog light switch, Front 136 . . . . . . . . . . . . . . . .
Foreign countries, Operation in 341 . . . . . . . .
Four−wheel drive
Operating the four−wheel drive system 168,171 . . . . . . . . . . . . . . . . . . . . . .
Front cup holder 327 . . . . . . . . . . . . . . . . . . . . .
Front fog light switch 136 . . . . . . . . . . . . . . . . .
Front passenger occupant classification system 91 . . . . . . . . . . . . . . . .
Front passenger ’s seat belt reminder light 149 . . . . . . . . . . . . . . . . . . . . . .
Front seat
Driving position memory system 48 . . . . . .
Seatback flattening 46,47 . . . . . . . . . . . . . . .
Front seats 43,44,45 . . . . . . . . . . . . . . . . . . . . . .
Fuel
Filler door o pener 37. . . . . . . . . . . . . . . . . . .
Fuel economy 386 . . . . . . . . . . . . . . . . . . . . .
Fuel pump shut off system 341 . . . . . . . . . . Gauge 146
. . . . . . . . . . . . . . . . . . . . . . . . . . . .
Operation in foreign countries 341 . . . . . . .
Tank cap 37 . . . . . . . . . . . . . . . . . . . . . . . . . . .
Fuel information 339 . . . . . . . . . . . . . . . . . . . . .
Fuel pump shut off system 341 . . . . . . . . . . . .
Fuse
Fuse box 452 . . . . . . . . . . . . . . . . . . . . . . . . . .
Fuse locations 430 . . . . . . . . . . . . . . . . . . . . . . .
G
Garage door opener 318
. . . . . . . . . . . . . . . . . .
Gauge
Engine coolant temperature 146
. . . . . . . . .
Fuel 146
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Glove box 317
. . . . . . . . . . . . . . . . . . . . . . . . . . .
Good driving practice 163
. . . . . . . . . . . . . . . . .
Grocery bag hooks 331
. . . . . . . . . . . . . . . . . . .
H
Hazard switch 135
. . . . . . . . . . . . . . . . . . . . . . .
Head restraints 62
. . . . . . . . . . . . . . . . . . . . . . .
Headlight switch 130,132
. . . . . . . . . . . . . . . . .
Height control
Rear height control air suspension 191
. . . . . . . . . . . . . . . . . . . . . .
High speed operation
During break−in 339
. . . . . . . . . . . . . . . . . . . .
Hill−start assist control system 189 . . . . . . . .
Hood release, Engine 34
. . . . . . . . . . . . . . . . . .
How to start the engine 370
. . . . . . . . . . . . . . .

480 O
Odometer148
. . . . . . . . . . . . . . . . . . . . . . . . . . .
Off−road driving precautions 374
. . . . . . . . . .
Off−road vehicle precautions 338
. . . . . . . . . .
Oil
Consumption 344
. . . . . . . . . . . . . . . . . . . . . .
Power steering 440
. . . . . . . . . . . . . . . . . . . . .
Viscosity and grade 436
. . . . . . . . . . . . . . . .
Oil consumption 344
. . . . . . . . . . . . . . . . . . . . .
Open door warning light 149
. . . . . . . . . . . . . . .
Operation in foreign countries 341
. . . . . . . . .
Outside temperature display 305
. . . . . . . . . . .
Overheating, Engine 394
. . . . . . . . . . . . . . . . . .
Overheating, Engine coolant 146
. . . . . . . . . .
Overview
Engine compartment 428
. . . . . . . . . . . . . . .
P
Parking brake
Operation 202 . . . . . . . . . . . . . . . . . . . . . . . . .
Reminder buzzer 202 . . . . . . . . . . . . . . . . . . .
Reminder light 202 . . . . . . . . . . . . . . . . . . . . .
Polishing 415 . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Power back window 30 . . . . . . . . . . . . . . . . . . .
Power outlet 315,316 . . . . . . . . . . . . . . . . . . . . .
Power rear view mirror control 122 . . . . . . . . .
Power steering
Fluid level 440 . . . . . . . . . . . . . . . . . . . . . . . . .
Power window switches 27 . . . . . . . . . . . . . . . .
Preloaders
(seat belt pretensioners) 71 . . . . . . . . . . . . .
Pretensioners
(seat belt pretensioners) 71
. . . . . . . . . . . . . Protecting your Toyota from
corrosion 414
. . . . . . . . . . . . . . . . . . . . . . . . . .
R
Radiator
Checking the radiator 439 . . . . . . . . . . . . . . .
Coolant, Engine 438 . . . . . . . . . . . . . . . . . . . .
Radio 208 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Rain clearing mirrors 419 . . . . . . . . . . . . . . . . .
Rear audio/video system
Rear seat entertainment system 240 . . . . .
Rear console box 324 . . . . . . . . . . . . . . . . . . . .
Rear cup holder 330 . . . . . . . . . . . . . . . . . . . . . .
Rear cup holders and tray 328 . . . . . . . . . . . . .
Rear height control air
suspension 191 . . . . . . . . . . . . . . . . . . . . . . . .
Rear seat precautions 52 . . . . . . . . . . . . . . . . .
Rear seats 50,52,53 . . . . . . . . . . . . . . . . . . . . . .
Rear side−view mirrors 125 . . . . . . . . . . . . . . .
Rear vents 299 . . . . . . . . . . . . . . . . . . . . . . . . . .
Rear view mirror
Anti−glare inside 123 . . . . . . . . . . . . . . . . . . .
Rear view mirror, auto anti−glare inside 124 . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Rear view mirrors
Folding 123 . . . . . . . . . . . . . . . . . . . . . . . . . . .
Outside 121 . . . . . . . . . . . . . . . . . . . . . . . . . . .
Power 122 . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Rear view monitor system 312 . . . . . . . . . . . . .
Reporting safety defects for U.S. owners 472 . . . . . . . . . . . . . . . . . . . . . . .
Roll sensing of curtain shield airbags off switch 95 . . . . . . . . . . . . . . . . . . .
Roof luggage carrier 334 . . . . . . . . . . . . . . . . . . Running board light 140
. . . . . . . . . . . . . . . . . . .
S
Satellite radio controller 208
. . . . . . . . . . . . . . .
Seat adjustment precautions
Front seats 43
. . . . . . . . . . . . . . . . . . . . . . . . .
Seat belt extender 69
. . . . . . . . . . . . . . . . . . . . .
Seat belts
Cleaning 417
. . . . . . . . . . . . . . . . . . . . . . . . . .
Fastening 64
. . . . . . . . . . . . . . . . . . . . . . . . . .
Seat belt precautions 64
. . . . . . . . . . . . . . . .
Seat belt pretensioners 71
. . . . . . . . . . . . . .
Seat heater switches 63
. . . . . . . . . . . . . . . . . .
Seating capacity 364
. . . . . . . . . . . . . . . . . . . . .
Seats 42
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Service and maintenance 422
. . . . . . . . . . . . .
Service reminder indicator 149
. . . . . . . . . . . .
Side door locks 22
. . . . . . . . . . . . . . . . . . . . . . .
Side door locks
Automatic locking and unlocking functions 25
. . . . . . . . . . . . . . . .
Side doors 22
. . . . . . . . . . . . . . . . . . . . . . . . . . .
Side doors
Automatic locking and unlocking functions 25
. . . . . . . . . . . . . . . .
Side vents 299
. . . . . . . . . . . . . . . . . . . . . . . . . . .
Spare fuse 452
. . . . . . . . . . . . . . . . . . . . . . . . . .
Spare tire 396
. . . . . . . . . . . . . . . . . . . . . . . . . . .
Spark plugs
Iridium−tipped spark plugs 345
. . . . . . . . . .
Specifications 462
. . . . . . . . . . . . . . . . . . . . . . .
SRS driver airbag and
front passenger airbag 74
. . . . . . . . . . . . . . .