2014 TOYOTA TUNDRA Owners Manual

2334-5. Using the driving support systems
4
Driving
■AUTO LSD mode
Stop the vehicle completely,
and press the VSC off switch
for more than 3 seconds, when
the system is in the TRAC OFF
mode.
The VSC off and “AUTO LSD”
indicators will come on.
The system is in TRAC, VSC,
Trailer Sway Control off and
AUTO LSD on mode.
■
VSC off mode
Stop the vehicle completely,
and press the VSC off switch
for more than 3 seconds, when
the system is in the AUTO LSD
mode.
Vehicles without multi-informa-
tion display: The VSC off and
“TRAC OFF” indicators will
come on.
Vehicles with multi-information
display: The VSC off indicator
will come on and the “TRAC-
TION CONTROL OFF” will be
shown on the display.
The system is all off mode.
Vehicles without multi-infor-
mation display
Vehicles with multi-information
display

2344-5. Using the driving support systems
If the vehicle gets stuck in fresh s now or mud, VSC/Trailer Sway Con-
trol/A-TRAC systems may reduce power from the engine to the
wheels. You may need to turn the system off to enable you to rock the
vehicle in order to free it.
■A-TRAC off mode
Press the VSC off switch.
Vehicles without multi-informa-
tion display: The “TRAC OFF”
indicator will come on.
Vehicles with multi-information
display: The “TRACTION CON-
TROL OFF” will be shown on
the display.
The system is in A-TRAC off
and VSC, Trailer Sway Control
on mode.
Press the switch again to turn
the system back on.
Disabling the VSC/Trailer Sway Control/A-TRAC systems (4H
mode on 4WD models)
Vehicles without multi-infor-
mation display
Vehicles with multi-information
display

2354-5. Using the driving support systems
4
Driving
■VSC off mode
Stop the vehicle completely,
and press the VSC off switch
for more than 3 seconds.
Vehicles without multi-informa-
tion display: The VSC off and
“TRAC OFF” indicators will
come on.
Vehicles with multi-information
display: The VSC off indicator
will come on and the “TRAC-
TION CONTROL OFF” will be
shown on the display.
The system is all off mode.
Press the switch again to turn
the system back on.
Vehicles without multi-infor-
mation display
Vehicles with multi-information
display

2364-5. Using the driving support systems
If the vehicle gets stuck in fresh snow or mud, A-TRAC system may
reduce power from the engine to the wheels. You may need to turn
the system off to enable you to rock the vehicle in order to free it.
Stop the vehicle completely,
and press the VSC off switch
for more than 3 seconds.
Vehicles without multi-informa-
tion display: The “TRAC OFF”
indicator will come on.
Vehicles with multi-information
display: The “TRACTION CON-
TROL OFF” will be shown on
the display.
Press the switch again to turn
the system back on.
Disabling the A-TRAC syste m (4L mode on 4WD models)
Vehicles without multi-infor-
mation display
Vehicles with multi-information
display

2374-5. Using the driving support systems
4
Driving
■When the “TRAC OFF” indicator light comes on or the message is dis-
played on the multi-information disp lay showing that “TRACTION CON-
TROL OFF” has been disabled even if the VSC off switch has not been
pressed
TRAC cannot be operated. Contact your Toyota dealer.
■ Sounds and vibrations caused by the ABS, brake assist, VSC, TRAC, A-
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.
■ Reactivation of the TRAC/VSC/A-T RAC/Trailer Sway Control systems
Even after the TRAC/VSC/A-TRAC/Trailer Sway Control systems have been
turned off, turning the engine switch off and then on again will automatically
reactivate the TRAC/VSC/A-TRAC/Trailer Sway Control systems.
■ Reactivation of the TRAC system linked to vehicle speed
When only the TRAC system is turned off, the TRAC system will turn on
when vehicle speed increases. However, when both TRAC/VSC systems are
turned off, the systems will not turn on even when vehicle speed increases.
■ If the brake system overheats
TRAC or A-TRAC will cease operation, and the slip indicator will change from
flashing to being on continuously to alert the driver. Stop the vehicle in a safe
place. (There is no problem with continuing normal driving.)
■ Shifting to “4L”
VSC and Trailer Sway Control are automatically turned off.

2384-5. Using the driving support systems
CAUTION
■The ABS does not operate effectively when
● The limits of tire gripping performance have been exceeded (such as
excessively worn tires on a snow covered road).
● The vehicle hydroplanes while driving at high speed on wet or slick roads.
■ Stopping distance when the ABS is operating may exceed that of nor-
mal conditions
The ABS is not designed to shorten the vehicle’s stopping distance. Always
maintain a safe distance from the vehicle in front of you, especially in the
following situations:
● When driving on dirt, gravel or snow-covered roads
● When driving with tire chains
● When driving over bumps in the road
● When driving over roads with potholes or uneven surfaces
■ TRAC or A-TRAC may not operate effectively when
Directional control and power may not be achievable while driving on slip-
pery road surfaces, even if the TRAC or A-TRAC system is operating.
Drive the vehicle carefully in conditions where stability and power may be
lost.
■ When the VSC and Trailer Sway Control are activated
The slip indicator light flashes. Always drive carefully. Reckless driving may
cause an accident. Exercise particular care when the indicator light flashes.
■ When the TRAC/VSC/A-TRAC/Trailer Sway Control systems are turned
off
Be especially careful and drive at a speed appropriate to the road condi-
tions. As these are the systems to ensure vehicle stability and driving force,
do not turn the TRAC/VSC/A-TRAC/Trailer Sway Control systems off unless
necessary.

2394-5. Using the driving support systems
4
Driving
CAUTION
■Replacing tires
Make sure that all tires are of the specified size, brand, tread pattern and
total load capacity. In addition, make sure that the tires are inflated to the
recommended tire inflation pressure level.
The ABS, TRAC, A-TRAC, VSC and Trailer Sway Control systems will not
function correctly if different tires are installed on the vehicle.
Contact your Toyota dealer for further information when replacing tires or
wheels.
■ Handling of tires and the suspension
Using tires with any kind of problem or modifying the suspension will affect
the driving assist systems, and may cause a system to malfunction.
■ Trailer Sway Control precaution
The Trailer Sway Control system is not able to reduce trailer sway in all situ-
ations. Depending on many factors such as the conditions of the vehicle,
trailer, road surface, and driving environment, the Trailer Sway Control sys-
tem may not be effective. Refer to your trailer owner’s manual for informa-
tion on how to tow your trailer properly.
■ If trailer sway occurs
Observe the following precautions.
Failure to do so may cause death or serious injury.
● Firmly grip the steering wheel. Steer straight ahead.
Do not try to control trailer swaying by turning the steering wheel.
● Begin releasing the accelerator pedal immediately but very gradually to
reduce speed.
Do not increase speed. Do not apply vehicle brakes.
If you make no extreme correction with the steering or brakes, your vehicle
and trailer should stabilize. ( P. 175)

2404-6. Driving tips
Winter driving tips
●Use fluids that are appropriate to the prevailing outside tempera-
tures.
• Engine oil
• Engine coolant
• Washer fluid
● Have a service technician ins pect the condition of the battery.
● Have the vehicle fitted with four snow tires or purchase a set of tire
chains for the rear tires.
Ensure that all tires are the same size and brand, and that chains match
the size of the tires.
Perform the following accordin g to the driving conditions:
● Do not try to forcibly open a window or move a wiper that is frozen.
Pour warm water over the frozen area to melt the ice. Wipe away
the water immediately to prevent it from freezing.
● To ensure proper operation of the climate control system fan,
remove any snow that has accumulated on the air inlet vents in
front of the windshield.
● Check for and remove any excess ice or snow that may have accu-
mulated on the exterior lights, ve hicle’s roof, chassis, around the
tires or on the brakes.
● Remove any snow or mud from the bottom of your shoes before
getting in the vehicle.
Accelerate the vehicle slowly, keep a safe distance between you and
the vehicle ahead, and drive at a reduced speed suitable to road con-
ditions.
Carry out the necessary preparations and inspections before
driving the vehicle in winter. Always drive the vehicle in a man-
ner appropriate to the prevailing weather conditions.
Preparation for winter
Before driving the vehicle
When driving the vehicle