2009 TOYOTA TUNDRA overheating

174 2-1. Driving procedures
CAUTION
■Exhaust gases
Exhaust gases include harmful carbon monoxide (CO) that is colorless and
odorless. Inhaling exhaust gases may lead to death or a serious health haz-
ard.
●If the vehicle is in a poorly ventilated area, stop the engine. In a closed
area, such as a garage, exhaust gases may collect and enter the vehicle.
This may lead to death or a serious health hazard.
● The exhaust should be checked occasionally. If there is a hole or crack
caused by corrosion, damage to a joint or abnormal exhaust noise, be
sure to have the vehicle inspected and repaired by your Toyota dealer.
Failure to do so may allow exhaust gases to enter the vehicle, resulting in
death or a serious health hazard.
● Toyota does not recommend occupying the rear cargo area when it is fitted
with a slide-in camper, camper shell or other type cover while the engine is
running. This caution applies to bot h driving and stopped or parked situa-
tions with the engine running. Particular care should be taken to prevent
exhaust gases from entering camper bodies, trailers or other enclosures
on or around your vehicle. If exhaust fumes are detected, open all win-
dows and thoroughly ventilate the area.
■ When taking a nap in the vehicle
Always turn the engine off. Otherwise, you may accidentally move the shift
lever or depress the accelerator pedal, which could cause an accident or fire
due to engine overheating. Additionally, if the vehicle is parked in a poorly
ventilated area, exhaust gases may collect and enter the vehicle, leadin\
g to
death or a serious health hazard.
■ When braking the vehicle
●When the brakes are wet, drive more cautiously.
Braking distance increases when the brakes are wet, and may cause one
side of the vehicle to brake differently than the other side. Also the parking
brake may not securely hold the vehicle.

186
2-1. Driving procedures
Parking brake
■Parking brake engaged warning buzzer
The buzzer sounds to indicate that parking brake is still engaged (with the
vehicle having reached a speed of 3 mph [5 km/h]).
NOTICE
■Before driving
Fully release the parking brake.
Driving the vehicle with the parking brake set will lead to brake components
overheating, which may affect braking performance and increase brake
wear.
Sets the parking brake*.
(Depressing the pedal again
releases the parking brake.)
At this time, the indicator will
come on.
*: Fully depress the parking
brake pedal with your left
foot while depressing the
brake pedal with your right
foot.
Canada
U.S.A.

193
2-2. Instrument cluster
2
When driving
Instrument panel light control
The brightness of the instrument panel lights can be adjusted.
Brighter
Darker
Vehicles with multi-information
display
With the dial turned fully up, the
intensity of the instrument panel
lights will not be reduced even
when the tail lights/headlights are
turned on.
NOTICE
■ To prevent damage to the engine and its components
●Do not let the indicator needle of the tachometer enter the red zone, which
indicates the maximum engine speed.
● The engine may be overheating if the engine coolant temperature gauge is
in the red zone (H). In this case, immediately stop the vehicle in a safe
place, and check the engine after it has cooled completely. ( P. 585)
■ While driving
●When the voltmeter indicates more than 19 V or less than 9 V, the battery
may be malfunctioning. Have your vehicle checked at your Toyota dealer.
● When the engine oil pressure gauge does not work properly, immediately
stop the engine and contact your Toyota dealer.
● When the automatic transmission fluid temperature gauge needle continu-
ally points higher than normal, immediately contact your Toyota dealer. (if
equipped)

265
2-5. Driving information
2
When driving
●
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 vehicles. Passing requires consider-
able distance. After passing a vehicle, 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 range position must be in 5 in the S mode (6-
speed models) or in 4 in the S mode (5-speed models).
● Due to the added load of the trailer, your vehicle’s engine may
overheat on hot days (at temperatures over 85°F [30°C]) when
driving up a long or steep grade. If the engine coolant temperature
gauge indicates overheating, immedi ately turn off the air condition-
ing (if in use), pull your vehicle off the road and stop in a safe spot.
(  P. 585)
● Always place wheel blocks under both the vehicle and the trailer
wheels when parking. Apply the parking brake firmly, and put the
transmission in P. Avoid parking on a slope, but if unavoidable, do
so only after performing the following:
Apply the brakes and keep them applied.
Have someone place wheel blocks under both the vehicle and
trailer wheels.
When the wheel blocks are in pl ace, release the brakes slowly
until the blocks absorb the load.
Apply the parking brake firmly.

443
3-7. Other interior features
3
Interior and exterior 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.

5
When trouble arises
587
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.
● “ENGINE COOLANT HOT” is shown on the multi-information display
(vehicles with multi-information display).
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.

657
Alphabetical index
Battery
Charging system warning
light .................................... 545
Checking .............................. 489
If the vehicle has discharged battery ............. 581
Preparing and checking before winter ...................... 246
Bluetooth
............................... 364
Bottle holders .......................... 417
Brakes Brake system warning buzzer ........................ 228, 233
Brake system warning
light .................................... 545
Fluid...................................... 486
Parking brake ....................... 186
Brake assist ............................. 230
Break-in tips ............................ 169
Camper information ................ 641
Card holder .............................. 403
Care Exterior ................................. 460
Interior .................................. 462
Seat belts ............................. 463
Cargo capacity ........................ 244
Cargo hooks ............................ 448
Cargo lamp Replacing light bulbs ............ 529
Switch ................................... 397
Wattage ................................ 617
CD changer .............................. 307
CD player ................................. 307
Certification label ............ 258, 603
Chains ...................................... 247
Child restraint system Booster seats, definition ....... 138
Booster seats, installation .... 155
Convertible seats, definition............................. 138
Convertible seats, installation .......................... 154 Front passenger occupant
classification system ........... 131
Infant seats, definition ...........138
Infant seats, installation.........153
Installing CRS with lower anchorages .........147, 150, 151
Installing CRS with seat belts ....................................153
Installing CRS with top tether straps ........156, 158, 162
Passenger airbag off
switch .......................... 127, 146
Child safety Airbag precautions ................122
Battery precautions .......490, 583
Child restraint system............138
Child-protectors .......................49
How your child should wear
the seat belt ..........................80
Installing child restraints ........144
Moon roof precautions ..........102
Power window lock switch.......95
Power window precautions .....95
Removed wireless
remote control battery
precautions .........................511
Seat belt extender precautions ...........................82
Seat belt precautions ..............81
Seat heater precautions ........443
Child-protectors .........................49
Cigarette lighter .......................431
Cleaning Exterior ..................................460
Interior ...................................462
Seat belts ..............................463
Clock ........................................ 426
Compass ...................................455
Condenser ................................486
Console box .............................401
Cooling system Engine overheating ...............585
CRS ...........................................138
C

658 Alphabetical index
Cruise control........................... 214
Cup holders .............................. 414
Curtain shield airbags ............. 115
Customizable features..... 200, 633
Daytime running light system .................................... 208
Deck hooks ............................... 447
Defogger Back window ......................... 295
Side mirrors ................... 293, 295
Dimension................................. 590
Dinghy towing .......................... 272
Display Trip information ..................... 198
Warning message ................. 554
Do-it-yourself main tenance..... 471
Doors Door glasses ...........................94
Door lock ...........................44, 48
Open door warning........547, 555
Side doors ...............................47
Side mirrors .............................88
Driver’s seat belt reminder buzzer ............................. 547, 549
Driver’s seat belt reminder light................. 547, 549
Driving
Break-in tips .......................... 169
Correct posture ..................... 113
Driving assist systems........... 230
Procedures ............................ 168
Winter driving tips.................. 246
Driving position memory...........68
DVD player ................................ 336
Emergency flashers ................. 534
Emergency flashers switch..... 534
Emergency, in case of
Blown fuse............................. 512
If the engine will not start ...... 575 If the shift lever cannot be
shifted ................................. 577
If the vehicle has discharged battery .............. 581
If the warning buzzer
sounds ................................ 545
If the warning light turns on........................................ 545
If the warning message is displayed ......................... 554
If you have a flat tire ............. 558
If you lose your keys ............. 580
If you think something is wrong .............................. 541
If your vehicle becomes stuck ................................... 588
If your vehicle needs to
be towed ............................. 535
If your vehicle overheats ....... 585
Engine
Compartment ........................ 476
Engine switch ........................ 177
Exhaust gas .......................... 174
Hood ..................................... 475
How to start the engine ................................. 177
Identification number............. 604
If the engine will not start ...... 575
Ignition switch ...................... 177
Immobilizer system ............... 108
Overheating .......................... 585
Warning light ......................... 546
Engine coolant Capacity ................................ 609
Checking ............................... 484
Preparing and checking before winter ....................... 246
Engine coolan t temperature
gauge ...................................... 188
Engine immobilizer system .... 108
Engine oil Capacity ................................ 607
Checking ............................... 479
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