overheating TOYOTA TUNDRA 2011 2.G Owners Manual

178 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.

190
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]).
■ Usage in winter time
See “Winter driving tips” for parking brake usage in winter time. ( P. 261)
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.

197
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. 637)
■ 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)

282 2-5. Driving information
●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).
● Instability happens more frequently when descending steep or long
downhill grades. Before descending, slow down and downshift. Do
not make sudden downshifts while descending steep or long down-
hill grades.
● Avoid holding the brake pedal down too long or applying the
brakes too frequently. This could cause the brakes to overheat and
result in reduced braking efficiency.
● 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. 637)
● Always place wheel blocks under both the vehicle’s and the
trailer’s wheels when parking. Ap ply the parking brake firmly, and
put the transmission in P. Avoid parking on a slope, but if unavoid-
able, do so only after performing the following:
Apply the brakes and keep them applied.
Have someone place wheel blo cks under both the vehicle’s
and trailer’s wheels.
When the wheel blocks are in place, release the brakes slowly
until the blocks absorb the load.
Apply the parking brake firmly.
Shift into P and turn off the engine.

493
3-8. 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.

495
3-8. 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
639
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.

720 Alphabetical index
Seat heater precautions ................. 493, 495
Child-protectors .........................49
Cleaning Exterior .................................. 516
Interior ................................... 519
Seat belts .............................. 520
Clock ........................................ 480
Compass ................................... 510
Condenser ................................ 540
Console box ............................. 455
Cooling system
Engine overheating ............... 637
CRS ........................................... 142
Cruise control........................... 220
Cup holders .............................. 468
Curtain shield airbags ............. 119
Customizable features..... 205, 683
Daytime running light
system .................................... 214
Deck hooks ............................... 500
Defogger
Back window ......................... 311
Side mirrors ................... 309, 311
Dimension................................. 644
Dinghy towing .......................... 288
Display Trip information ..................... 203
Warning message ................. 608
Do-it-yourself main tenance..... 528
Doors Door glasses ...........................94
Door lock ...........................44, 47
Open door warning........601, 609
Side doors ...............................47
Side mirrors .............................89
Driver’s seat belt reminder buzzer ..................................... 601
Driver’s seat belt
reminder light......................... 601 Driving
Break-in tips .......................... 173
Correct posture ..................... 117
Driving assist systems .......... 243
Procedures............................ 172
Winter driving tips ................. 261
Driving position memory .......... 68
DVD player................................ 390
Emergency flashers................. 588
Emergency flashers switch .... 588
Emergency, in case of Blown fuse ............................ 565
If the engine will not start ...... 628
If the shift lever cannot be shifted ................................. 630
If the vehicle has discharged battery .............. 634
If the warning buzzer
sounds ................................ 599
If the warning light turns on........................................ 599
If the warning message is displayed ......................... 608
If you have a flat tire ............. 612
If you lose your keys ............. 633
If you think something is wrong .............................. 595
If your vehicle becomes stuck ................................... 640
If your vehicle has to be
stopped in an emergency ... 641
If your vehicle needs to be towed ............................. 589
If your vehicle overheats ....... 637
Engine Compartment ........................ 533
Engine switch ........................ 181
Exhaust gas .......................... 178
Hood ..................................... 532
How to start the
engine ................................. 181
Identification number............. 655
D
E

721
Alphabetical index
If the engine will not start...... 628
Ignition switch ...................... 181
Immobilizer system............... 112
Overheating .......................... 637
Warning light ........................ 600
Engine coolant Capacity ............................... 660
Checking .............................. 539
Preparing and checking before winter ...................... 261
Engine coolan t temperature
gauge ..................................... 192
Engine immobilizer system .... 112
Engine oil Capacity ............................... 657
Checking .............................. 535
Preparing and checking before winter ...................... 261
Warning light ........................ 599
Engine oil maintenance
data ........................................ 537
Engine switch .......................... 181
Event data recorder ................ 597
FFV ................................... 107, 668
Flex-fuel ........................... 107, 668
Flexible fuel vehicle ........ 107, 668
Floor mat .................................. 498
Fluid Brake .................................... 540
Washer ................................. 545
Fog lights Replacing light bulbs ............ 581
Switch ................................... 216
Wattage ................................ 667
Four-wheel drive system ........ 236
Front fog lights Replacing light bulbs ............ 581
Switch ................................... 216
Wattage ................................ 667 Front passenger occupant
classification system ............135
Front passenger’s seat belt reminder light.........................601
Front passenger’s seat belt
warning buzzer ..............601, 603
Front seats Adjustment ..............................58
Front side marker lights Replacing light bulbs .............580
Switch....................................212
Wattage .................................667
Front turn signal lights Replacing light bulbs .............579
Switch....................................189
Wattage .................................667
Fuel
Capacity ................................657
Fuel gauge ............................192
Fuel pump shut off system ....596
Gas station information .........732
Information ............................668
Refueling ...............................107
Type ......................................657
Warning light .........................601
Warning message .................609
Fuel door...................................107
Fuel filler door ..........................107
Fuel pump shut off system .....596
Fuses.........................................565
Garage door opener.................503
Gas station information...........732
Gauges ......................................192
Glove box..................................453
F
G

723
Alphabetical index
Outer foot lights .................... 446
Personal light switch............. 448
Replacing light bulbs ............ 576
Turn signal lever ................... 189
Vanity lights .......................... 479
Wattage ................................ 667
Load capacity .......................... 259
Lock steering column ............. 182
Luggage storage box ...... 451, 475
Luggage compartment features .................................. 500
Maintenance Do-it-yourself maintenance ...................... 528
General maintenance ........... 524
Maintenance data ................. 644
Maintenance requirements ... 522
Vehicle exterior..................... 516
Vehicle interior...................... 519
Malfunction indicator lamp .... 600
Manual air conditioning system ................................... 301
Manual headlight leveling dial.......................................... 213
Master warning light ....... 601, 608
Map holder ............................... 460
Meter Accessory meter................... 209
Instrument panel light control ................................ 197
Meters .................................. 192
Mirrors Inside rear view mirror ............ 86
Side mirror heaters ....... 309, 311
Side mirrors ............................ 89
Vanity mirrors ....................... 479
Moon roof................................. 102
MP3 disc................................... 335
Multi-information display ................................... 203 Noise from under vehicle ..........36
Odometer ..................................192
Off-road precautions ...............251
Oil
Engine oil ..............................535
Warning light .................599, 603
Opener Hood......................................532
Outside rear view mirrors
Adjusting and folding ...............89
Outside temperature display ....................................481
Overhead console ....................467
Overheating, Engine ................637
Parking assist...........................223
Parking brake ...........................190
Parking lights Replacing light bulbs .............579
Switch....................................212
Wattage .................................667
Passenger airbag off switch Installing the child restraint
system ................................150
Passenger airbag off switch precautions .........................144
Passenger airbag off switch ..................................131
Passenger risk group ............132
Pen holder ................................463
Personal lights Switch....................................447
Wattage .................................667
Power back window ...................99
Power outlet .....................483, 488
Power steering Fluid ..............................542, 664
Power windows ..........................94
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