2016 TOYOTA TACOMA engine overheat

1924-2. Driving procedures
■Auto power off function
If the vehicle is left in ACCESSORY mode for more than 20 minutes or IGNI-
TION ON mode (the engine is not running) for more than an hour with the
shift lever in P, the engine switch will automatically turn off. However, this
function cannot entirely prevent battery discharge. Do not leave the vehicle
with the engine switch in ACCESSORY or IGNITION ON mode for long peri-
ods of time when the engine is not running.
■Electronic key battery depletion
P. 106
■Conditions affecting operation
P. 124
■Note for the entry function
P. 125
■If the engine does not start
●The engine immobilizer system may not have been deactivated. (P. 69)
Contact your Toyota dealer.
●Check that the shift lever is securely set in P. The engine may not start if the
shift lever is displaced out of P. “Shift to P Position” will be displayed on the
multi-information display.
■Steering lock
After turning the engine switch off and opening and closing the doors, the
steering wheel will be locked due to the steering lock function. Operating the
engine switch again automatically cancels the steering lock.
■When the steering lock cannot be released
■Steering lock motor overheating prevention
To prevent the steering lock motor from overheating, operation of the motor
may be suspended if the engine is turned on and off repeatedly in a short
period of time. In this case, refrain from running the engine. After about
10 seconds, the steering lock motor will resume functioning. A message will be displayed on the multi-
information display.
Check that the shift lever is in P. Press the
engine switch while turning the steering
wheel left and right.

2494-5. Using the driving support systems
4
Driving
■If the engine is turned off and restarted
The AUTO LSD system and the indicators are automatically turned off.
■Reactivation of the VSC system linked to vehicle speed
When the AUTO LSD system is turned on, the VSC and TRAC systems will
turn on automatically if vehicle speed increases.
■If the brake system overheats
The system will cease operation and a buzzer will sound to alert the driver.
Stop the vehicle in a safe place. (There is no problem with continuing normal
driving.) The system will be automatically restored after a short time.
WARNING
■To avoid an accident
●Do not use the AUTO LSD system in conditions other than the above.
A much greater steering effort and more careful cornering control will be
required.
●Do not drive with the AUTO LSD system continuously turned on.

2544-5. Using the driving support systems
■When the rear differential is locked (vehicles with the rear differential
lock system)
The active traction control system is activated only when the vehicle speed is
less than 3 mph (6 km/h).
■Sounds and vibrations caused by the active traction control system
●A sound may be heard from the engine compartment when the engine is
started or just after the vehicle begins to move. This sound does not indicate
that a malfunction has occurred in the system.
●Vibrations may be felt through the vehicle body and steering. It may occur
when the system is operating.
■If the brake system overheats
The system will cease operation, a buzzer will sound to alert the driver. Stop
the vehicle in a safe place. (There is no problem with continuing normal driv-
ing.)
The system will be automatically restored after a short time.
WARNING
■The active traction control system may not operate effectively when
Directional control and power may not be achievable while driving on slip-
pery road surfaces, even if the active traction control system is operating.
Do not drive the vehicle in conditions where stability and power may be lost.

2614-5. Using the driving support systems
4
Driving
■Automatic system cancelation
In the following situations, the buzzer will sound intermittently and Crawl Con-
trol will be canceled automatically. In this event, the Crawl Control indicator
will flash and then goes off, and a message stating that Crawl Control has
been turned off will be displayed on the multi-information display for several
seconds.
●When the shift lever is shifted to P or N
●When the front-wheel drive control switch is turned to “4H”
●When the driver’s door is opened
■Function limitations
When the vehicle speed exceeds approximately 15 mph (25 km), engine con-
trol and brake control will stop temporarily. In this event, the Crawl Control
indicator will flash.
■When the Crawl Control system is operated continuously
●If Crawl Control is used continuously for a long time, the buzzer will sound, a
malfunction notification will be displayed on the multi-information display,
the Crawl Control indicator goes off, and Crawl Control will be temporarily
inoperable as a result of the brake system overheating. In this event, stop
the vehicle immediately in a safe place, and allow the brake system to cool
down sufficiently until the “TRAC OFF” indicator will goes off. (In the mean-
time, normal driving is possible.)
●If Crawl Control is used continuously for a long time, the buzzer will sound,
the system will be temporarily canceled, and a malfunction notification will
be displayed on the multi-information display as a result of the automatic
transmission system overheating. Stop the vehicle in a safe place until the
display goes off.
■Sounds and vibrations caused by the Crawl Control system
●A sound may be heard from the engine compartment when the engine is
started or just after the vehicle begins to move. This sound does not indicate
that a malfunction has occurred in Crawl Control system.
●Either of the following conditions may occur when the Crawl Control system
is operating. None of these indicates that a malfunction has occurred.
• Vibrations may be felt through the vehicle body and steering.
• A motor sound may be heard after the vehicle comes to a stop.
■When there is a malfunction in the system
Warning lights and/or warning messages will turn on. (P. 519)

2674-5. Using the driving support systems
4
Driving
■Sounds and vibrations caused by the ABS, Multi Terrain ABS, brake
assist, VSC, TRAC and Trailer Sway Control systems
●A sound may be heard from the engine compartment when the brake pedal
is depressed repeatedly, when the engine is started or just after the vehicle
begins to move. This sound does not indicate that a malfunction has
occurred in any of these systems.
●Any of the following conditions may occur when the above systems are
operating. None of these indicates that a malfunction has occurred.
• Vibrations may be felt through the vehicle body and steering.
• A motor sound may be heard after the vehicle comes to a stop.
• The brake pedal may pulsate slightly after the ABS is activated.
• The brake pedal may move down slightly after the ABS is activated.
■Automatic reactivation of TRAC, VSC and Trailer Sway Control systems
after turning off the engine
Turning off the engine after turning off the TRAC, VSC and Trailer Sway Con-
trol systems will automatically reactivate them.
■Automatic reactivation of TRAC system (AUTO LSD mode)
With AUTO LSD mode, VSC off and “AUTO LSD” indicator lights turn on.
The VSC and TRAC systems will turn on when the vehicle speed increases.
■Automatic reactivation of TRAC, VSC and Trailer Sway Control systems
If the TRAC, VSC and Trailer Sway Control systems are turned off, automatic
reactivation will not occur when vehicle speed increases
■If the brake system overheats
TRAC will cease operation and a buzzer will sound to alert the driver. Stop
the vehicle in a safe place. (There is no problem with continuing normal driv-
ing.)
■Operating conditions of hill-start assist control
When the following four conditions are met, the hill-start assist control will
operate:
●The shift lever is in a position other than P or N (when starting off forward/
backward on an upward incline).
●The vehicle is stopped.
●The accelerator pedal is not depressed.
●The parking brake is not engaged.
■Automatic system cancelation of hill-start assist control
The hill-start assist control will turn off in any of the following situations:
●The shift lever is moved to P or N.
●The accelerator pedal is depressed.
●The parking brake is engaged.
●Approximately 2 seconds elapse after the brake pedal is released.

3836-1. Using the air conditioning system
6
Interior features
Seat heaters
: If equipped
WARNING
■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 physically chal-
lenged
• 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.
●Do not use seat heater more than necessary. Doing so may cause minor
burns or overheating.
NOTICE
■To prevent damage to the seat heaters
Do not put heavy objects that have an uneven surface on the seat and do
not stick sharp objects (needles, nails, etc.) into the seat.
■To prevent battery discharge
Turn the seat heaters off when the engine is not running.

499
8When trouble arises
8-1. Essential information
Emergency flashers .......... 500
If your vehicle has to
be stopped in
an emergency ................. 5018-2. Steps to take in an emergency
If your vehicle needs to
be towed ......................... 503
If you think something is
wrong .............................. 508
Fuel pump shut off
system ............................ 509
If a warning light turns on
or a warning buzzer
sounds ............................ 510
If a warning message is
displayed (vehicles with
a multi-information
display) ........................... 519
If you have a flat tire.......... 536
If the engine will not
start ................................. 551
If the shift lever cannot
be shifted from P
(vehicles with
an automatic
transmission) .................. 553
If the electronic key
does not operate properly
(vehicles with a smart key
system) ........................... 555
If the vehicle battery is
discharged ...................... 557
If your vehicle overheats ... 561
If the vehicle becomes
stuck ............................... 563

561
8
When trouble arises
8-2. Steps to take in an emergency
If your vehicle overheats
●The needle of the engine coolant temperature gauge (P. 8 8 )
enters the red zone or a loss of engine power is experienced. (For
example, the vehicle speed does not increase.)
●“High Engine Coolant Temperature” is shown on the multi-informa-
tion display. (if equipped)
●Steam comes out from under the hood.
Stop the vehicle in a safe place and turn off the air conditioning sys-
tem, and then stop the engine.
If you see steam:
Carefully lift the hood after the steam subsides.
If you do not see steam:
Carefully lift the hood.
After the engine has cooled
down sufficiently, inspect the
hoses and radiator core (radia-
tor) for any leaks.
Radiator
Cooling fan
If a large amount of coolant leaks,
immediately contact your Toyota
dealer.
The coolant level is satisfactory
if it is between the “FULL” and
“LOW” lines on the reservoir.
Reservoir
“FULL”
“LOW”
Radiator cap
The following may indicate that your vehicle is overheating:
Correction procedures
1
2
3
1
2
4
1
2
3
4