2015 TOYOTA TUNDRA engine

2314-5. Using the driving support systems
4
Driving
The slip indicator light will flash
while the TRAC/VSC/A-TRAC/
Trailer Sway Control systems are
operating.
If the vehicle gets stuck in fresh snow or mud, VSC/Trailer Sway Con-
trol/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.
■TRAC off mode
Press the VSC off switch.
The “AUTO LSD” indicator will
come on.
The system is in TRAC off and
AUTO LSD, VSC, Trailer Sway
Control on mode.
Press the switch again to turn
the system back on.
When the TRAC/VSC/A-TRAC/Trailer Sway Control systems are
operating
Disabling the VSC/Trailer Sw ay Control/TRAC systems (2WD
models and 2WD mode on 4WD models)

2334-5. Using the driving support systems
4
Driving
If the vehicle gets stuck in fresh snow 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.
The “TRACTION CONTROL
OFF” will be shown on the dis-
play.
The system is in A-TRAC off
and VSC, Trailer Sway Control
on mode.
Press the switch again to turn
the system back on.
■
VSC off mode
Stop the vehicle completely,
and press the VSC off switch
for more than 3 seconds.
The VSC off indicator will come
on and the “TRACTION CON-
TROL OFF” will be shown on
the display.
The system is all off 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)

2344-5. 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.
The “TRACTION CONTROL
OFF” will be shown on the dis-
play.
Press the switch again to turn
the system back on.
■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.
Disabling the A-TRAC syste m (4L mode on 4WD models)

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

2414-6. Driving tips
4
Driving
Park the vehicle and move the shift lever to P without setting the park-
ing brake. The parking brake may freeze up, preventing it from being
released. If necessary, block the wheels to prev ent inadvertent sliding
or creeping.
Observe the following precautions when switching fuels, in order to
maintain starting and driving performance.
● Do not change fuels when the fuel level is 1/4 or less.
● Always add at least 2.6 gal. (10 L) of fuel.
● After filling up with fuel, warm up the engine or drive the vehicle for
at least 5 minutes or 7 miles (11 km).
● Do not accelerate rapidly immediately after refueling.
Use the correct tire chain size when mounting the tire chains.
Chain size is regulated for each tire size.
Side chain
(0.2 in. [5 mm] in diameter)
Cross chain
(0.25 in. [6.3 mm] in diameter)
Regulations regarding the use of tire chains vary depending on loca-
tion and type of road. Al ways check local regulations before installing
chains.
When parking the vehicle
Refueling (Flex-fuel vehicles)
Selecting tire chains
1
2
Regulations on the use of tire chains

2424-6. Driving tips
■Tire chain installation
Observe the following precautions when installing and removing chains:
●Install and remove tire chains in a safe location.
● Install tire chains on the rear tires. Do not install tire chains on the front tires.
● Install tire chains on rear tires as tightly as possible. Retighten chains after
driving 1/4  1/2 mile (0.5  1.0 km).
● Install tire chains following the instructions provided with the tire chains.
CAUTION
■Driving with snow tires
Observe the following precautions to reduce the risk of accidents.
Failure to do so may result in a loss of vehicle control and cause death or
serious injury.
● Use tires of the specified size.
● Maintain the recommended level of air pressure.
● Do not drive in excess of 75 mph (120 km/h), regardless of the type of
snow tires being used.
● Use snow tires on all, not just some wheels.
● 4WD models: Do not mix tires of different makes, models, tread patterns
or treadwear.
■ Driving with tire chains
Observe the following precautions to reduce the risk of accidents.
Failure to do so may result in the vehicle being unable to be driven safely,
and may cause death or serious injury.
● Do not drive in excess of the speed limit specified for the tire chains being
used, or 30 mph (50 km/h), whichever is lower.
● Avoid driving on bumpy road surfaces or over potholes.
● Avoid sudden acceleration, abrupt steering, sudden braking and shifting
operations that cause sudden engine braking.
● Slow down sufficiently before entering a curve to ensure that vehicle con-
trol is maintained.

2474-6. Driving tips
4
Driving
NOTICE
■To prevent the water damage
Take all necessary safety measures to ensure that water damage to the
engine or other components does not occur.
● Water entering the engine air intake will cause severe engine damage.
● Water entering the automatic transmission will cause deterioration in shift
quality, locking up of your transmission accompanied by vibration, and ulti-
mately damage.
● Water can wash the grease from wheel bearings, causing rusting and pre-
mature failure, and may also enter the differentials, transmission and
transfer case, reducing the gear oil’s lubricating qualities.
■ When you drive through water
If driving through water, such as when crossing shallow streams, first check
the depth of the water and the bottom of the river bed for firmness. Drive
slowly and avoid deep water.
■ Inspection after off-road driving
● Sand and mud that has accumulated in brake drums and around brake
discs may affect braking efficiency and may damage brake system compo-
nents.
● Always perform a maintenance inspection after each day of off-road driv-
ing that has taken you through rough terrain, sand, mud, or water. For
scheduled maintenance information, refer to the “Scheduled Maintenance
Guide” or “Owner’s Manual Supplement”.

2545-1. Basic Operations
CAUTION
■Laser product
THIS PRODUCT IS A CLASS 1 LASER PRODUCT. USE OF CONTROLS
OR ADJUSTMENTS OR PERFORMA NCE OF PROCEDURES OTHER
THAN THOSE SPECIFIED HEREIN MAY RESULT IN HAZARDOUS
RADIATION EXPOSURE. DO NOT OPEN COVERS AND DO NOT
REPAIR BY YOURSELF. REFER SE RVING TO QUALIFIED PERSONNEL.
NOTICE
■To avoid damaging the touch screen
● To prevent damaging the screen, lightly touch the screen buttons with your
finger.
● Do not use objects other than your finger to touch the screen.
● Wipe off fingerprints using a glass cleaning cloth. Do not use chemical
cleaners to clean the screen, as they may damage the touch screen.
■ To prevent battery discharge
Do not leave the multimedia system on longer than necessary when the
engine is off.
■ To avoid damaging the multimedia system
Take care not to spill drinks or other fluids on the multimedia system.