2009 TOYOTA 4RUNNER engine overheat

222 2-5. Driving information
●Avoid sudden braking as you may skid, resulting in jackknifing and
loss of control. This is especiall y true on wet or slippery surfaces.
● Avoid jerky starts or sudden acceleration.
● Avoid jerky steering and sharp turns, and slow down before mak-
ing a turn.
● Note that when making a turn, th e trailer wheels will be closer than
the vehicle wheels to the inside of the turn. Compensate by making
a larger than normal turning radius.
● Crosswinds and rough roads will adversely affect handling of your
vehicle and trailer, causing sway . Periodically check the rear to
prepare for being passed by large trucks or buses, which may
cause your vehicle and trailer to sway. If swaying occurs, firmly grip
the steering wheel, reduce speed immediately but gradually, and
steer straight ahead. Never increase speed. If you make no
extreme correction with the stee ring or brakes, your vehicle and
trailer will stabilize.
● Take care when passing other v ehicles. Passing requires consider-
able distance. After passing a vehi cle, do not forget the length of
your trailer, and be sure you hav e plenty of room before changing
lanes.
● In order to maintain engine braking efficiency when driving on a
long steep downgrade, do not use the transmission in D.
Transmission shift position must be in 4.
● Due to the added load of the trailer, your vehicle’s engine may
overheat on hot days (at temper atures over 85°F [30°C]) when
driving up a long or steep grade. If the engine coolant temperature
gauge indicates overheating, immediately turn off the air condition-
ing (if in use), pull your vehicle off the road and stop in a safe spot.
(  P. 463)

335
3-6. Other interior features
3
Interior features
CAUTION
■
Burns
●Use caution when seating the following persons in a seat with the seat
heater on to avoid the possibility of burns:
• Babies, small children, the elderly, the sick and the disabled
• Persons with sensitive skin
• Persons who are fatigued
• Persons who have taken alcohol or drugs that induce sleep (sleeping
drugs, cold remedies, etc.)
● Do not cover the seat with anything when using the seat heater.
Using the seat heater with a blanket or cushion increases the temperature
of the seat and may lead to overheating.
NOTICE
■To prevent seat heater damage
Do not put unevenly weighted objects on the seat and do not stick sharp
objects (needles, nails, etc.) into the seat.
■ To prevent battery discharge
Turn the switches off when the engine is not running.

When trouble arises5
425
5-1. Essential informationEmergency flashers ......... 426
If your vehicle needs to be towed ............................. 427
If you think something is wrong ............................. 432
Fuel pump shut off system ........................... 433
Event data recorder ......... 434
5-2. Steps to take in an emergency
If a warning light turns on or a warning buzzer
sounds... ........................ 436
If you have a flat tire......... 445
If the engine will not start ................................ 456
If the shift lever cannot be shifted from P................. 457
If you lose your keys ........ 458
If the vehicle battery is discharged ..................... 459
If your vehicle overheats ....................... 463
If the vehicle becomes stuck .............................. 466

5
When trouble arises
463
5-2. Steps to take in an emergency
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
subsides 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 cluster) begins to fall and then stop the
engine.
If the fan is not operating: Stop the engine immediately and call your local Toyota
dealer.

5
When trouble arises
465
5-2. Steps to take in an emergency
■
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 is coming 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 injury such as burns.
● Keep hands and clothing away from the fan and other belts while the
engine is running.
● Do not loosen the radiator cap while the engine and radiator are hot.
Serious injury, such as burns, may result from hot coolant and steam
released under pressure.
NOTICE
■When adding engine coolant
Wait until the engine has cooled down before adding engine coolant.
When adding coolant, do so slowly. Adding cool coolant to a hot engine too
quickly can cause damage to the engine.

507
Alphabetical index
Break-in tips ............................ 133
Care
Exterior ................................. 356
Interior .................................. 359
Seat belts ............................. 360
Cargo capacity ........................ 203
Cargo net hook ........................ 339
CD changer .............................. 250
CD player ................................. 250
Center differential lock ........... 179
Certification label ............ 217, 471
Chains ...................................... 214
Child restraint system
Booster seats, definition ....... 114
Booster seats, installation .... 125
Convertible seats, definition............................. 114
Convertible seats,
installation .......................... 123
Front passenger occupant classification system .......... 108
Infant seats, definition .......... 113
Infant seats, installation ........ 122
Installing CRS with LATCH system................................ 119
Installing CRS with seat belts ................................... 117
Installing CRS with top tether straps ................................. 126
Child safety
Airbag precautions ............... 102
Battery precautions ...... 386, 461
Child restraint system ........... 113
Child-protectors ...................... 35
How your child should wear the seat belt ......................... 66
Installing child restraints ....... 117
Moon roof precautions............ 84
Power window lock switch ...... 77
Power window precautions..... 78
Removed key battery precautions ........................ 403 Seat belt extender
precautions ...........................68
Seat belt precautions ..............66
Seat heater precautions ........335
Child-protectors .........................35
Cleaning
Exterior ..................................356
Interior ...................................359
Seat belts ..............................360
Clock ........................................ 325
Coin holder ...............................311
Compass ...................................350
Condenser ................................381
Console box .............................312
Cooling system Engine overheating ...............463
CRS ...........................................113
Cruise control...........................166
Cup holders ......................305, 316
Curtain shield airbags ...............95
Customizable features.............495
Daytime running light
system ....................................160
DAC ...........................................186
Defogger
Rear window .........................240
Side mirrors ...........................240
Dimension.................................470
Dinghy towing ..........................228
Do-it-yourself main tenance.....368
Door courtesy lights Door courtesy lights ..............305
Wattage .................................480
Doors Door glasses ...........................76
Door lock ...........................29, 33
Open door warning light ........439
Side doors ...............................33
Side mirrors .............................73
C
D

508 Alphabetical index
Downhill Assist Control .......... 186
Driver’s seat belt reminder buzzer ..................................... 439
Driver's seat belt reminder light ......................................... 439
Driving Break-in tips .......................... 133
Correct posture .......................93
Driving assist systems........... 188
Procedures ............................ 140
Winter driving tips.................. 213
Driving position memory...........58
DVD player ................................ 280
Electronically modulated air suspension............................. 169
Emergency, in case of If a warning buzzer sounds ................................ 436
If a warning light turns on ...... 436
If the engine will not start ...... 456
If the shift lever cannot be shifted from P...................... 457
If the vehicle battery is discharged .......................... 459
If the vehicle becomes stuck ................................... 466
If you have a flat tire ............. 445
If you lose your keys ............. 458
If you think something is wrong .................................. 432
If your vehicle needs to be towed .................................. 427
If your vehicle overheats ....... 463
Emergency flashers Switch.................................... 426
Engine
Compartment ........................ 373
Engine switch ........................ 140
Hood...................................... 372
How to start the engine ......... 140
Identification number ............. 472
If the engine will not start ...... 456 Ignition switch ....................... 140
Immobilizer system ................. 88
Overheating .......................... 463
Engine coolant Capacity ................................ 475
Checking ............................... 380
Preparing and checking before winter ....................... 213
Temperature gauge .............. 148
Engine coolan t temperature
gauge ...................................... 148
Engine immobilizer system ...... 88
Engine oil Capacity ................................ 474
Checking ............................... 375
Preparing and checking before winter .................................. 213
Warning light ................. 437, 439
Engine oil maintenance data ......................................... 378
Engine switch........................... 140
Event data recorder ................. 434
Floor mat .................................. 337
Fluid Brake..................................... 381
Washer.................................. 387
Fog lights
Replacing light bulbs ............. 417
Switch ................................... 162
Wattage................................. 480
Four-wheel drive system Four-wheel drive control switch.................................. 177
Front passenger occupant classification system ............ 108
Front passenger's seat belt
reminder light ........................ 439
Front passenger’s seat belt warning buzzer ...................... 439
Front seats Adjustment .............................. 41
E
F

510 Alphabetical index
Keys ........................................28
Reminder buzzer ................... 441
Wireless remote control key ..................................28, 29
License plate lights Replacing light bulbs ............. 421
Switch.................................... 158
Wattage ................................. 480
Light bulbs
Replacing .............................. 415
Wattage ................................. 480
Lights
Automatic light off system ..... 160
Emergency flasher switch .................................. 426
Hazard light switch ................426
Headlight switch .................... 158
Instrument panel light control dial ...................................... 149
Interior light switch ................307
Personal light switch ............. 306
Replacing light bulbs ............. 415
Running board lights ............. 305
Turn signal lights switch ........ 145
Wattage ................................. 480
Load capacity ................... 211, 470
Lock steering column ................69
Luggage compartment features................................... 338
Maintenance Do-it-yourself maintenance ... 368
General maintenance ............ 364
Maintenance data.................. 470
Maintenance requirements.... 362
Vehicle exterior ..................... 356
Vehicle interior ...................... 359
Malfunction indicator lamp ..... 437 Meter
Accessory meter ................... 155
Instrument panel light
control ................................. 149
Meters ................................... 148
Mirrors Inside rear view mirror ............ 70
Rear side-view mirrors .......... 328
Side mirrors............................. 73
Vanity mirrors ........................ 324
Moon roof ................................... 82
MP3 disc ................................... 257
Odometer .................................. 148
Off-road precautions ............... 198
Oil
Engine oil .............................. 375
Warning light ................. 437, 439
Opener
Fuel door ................................. 85
Fuel filler door ......................... 85
Hood ..................................... 372
Outside rear view mirrors Adjusting and folding............... 73
Outside temperature
display .................................... 326
Overhead console.................... 316
Overheating, Engine ................ 463
Parking brake ........................... 146
Parking lights Replacing light bulbs ............. 418
Switch ................................... 158
Wattage................................. 480
Personal lights ......................... 306 Switch ................................... 306
Wattage................................. 480
Power back windows................. 79
Power outlet ............................. 329
Power steering Fluid ...................................... 383
Power windows .......................... 76
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