2012 TOYOTA TUNDRA four wheel drive

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2-3. Operating the lights andwipers
Headlight swi tch .................. 210
Fog light switch ................... 215
Windshield wipers and washer .............................. 217
2-4. Using other driving systems Cruise control ...................... 223
Intuitive parking assist......... 227
Rear view monitor system... 234
Four-wheel drive system ..... 242
AUTO LSD system.............. 246
Driving assist systems ........ 249
2-5. Driving information Off-road precautions ........... 257
Cargo and luggage ............. 262
Vehicle load limits ............... 265
Winter driving tips ............... 267
Trailer towing ...................... 271
Dinghy towing ..................... 294
3-1. Using the air conditioning
system a nd defogger
Automatic air conditioning system .............................. 298
Manual air conditioning system .............................. 307
Outside rear view mirror defoggers and front
windshield wiper de-icer
(if equipped on Regular
Cab and Double Cab
models) ............................. 315 Back window, outside rear
view mirror defoggers
and front windshield
wiper de-icer (if equipped
on CrewMax models) ....... 317
3-2. Using the audio system Audio system types ............ 320
Using the radio ................... 324
Using the CD player ........... 332
Playing MP3 and WMA discs ................................. 341
Operating an iPod .............. 349
Operating a USB memory ............................ 355
Optimal use of the audio system .............................. 362
Using the AUX port............. 366
Using the steering wheel audio switches.................. 368
Antenna .............................. 371
3-3. Using the Bluetooth
® audio
system
Bluetooth
® audio system .... 374
Using the Bluetooth® audio
system .............................. 377
Operating a Bluetooth
®
enabled portable player.... 382
Setting up a Bluetooth
®
enabled portable player.... 384
Bluetooth
® audio system
setup ................................ 389
3Interior and exterior
features

When driving2
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2-1. Driving proceduresDriving the vehicle............ 168
Engine (ignition) switch .... 178
Automatic transmission .... 181
Turn signal lever .............. 186
Parking brake ................... 187
Horn ................................. 188
2-2. Instrument cluster Gauges and meters ......... 189
Indicators and warning lights .............................. 195
Multi-information display............................ 200
Accessory meter .............. 207
2-3. Operating the lights and wipers
Headlight switch ............... 210
Fog light switch ................ 215
Windshield wipers and washer ........................... 217
2-4. Using other driving systems Cruise control ................... 223
Intuitive parking assist...... 227
Rear view monitor system ........................... 234
Four-wheel drive system ........................... 242
AUTO LSD system........... 246
Driving assist systems ..... 249 2-5. Driving information
Off-road precautions ........ 257
Cargo and luggage .......... 262
Vehicle load limits ............ 265
Winter driving tips ............ 267
Trailer towing ................... 271
Dinghy towing .................. 294

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2-4. Using other driving systems
Four-wheel drive system
: If equipped
Use the front-wheel drive control switch to select the following
transfer modes.
*1: Vehicles with multi-information display
*2: Vehicles without multi-information display
2WD (high speed position, two-wheel drive)
Normal driving.
4H (high speed position, four-wheel drive)
Greater traction than two-wheel drive.
When you experience a loss of power, such as wheel slipping.The 4HI indicator will come on.
4L (low speed position, four-wheel drive)
Driving requiring maximum power and traction such as climbing or
descending steep hills, off-road driving and hard pulling in sand or mud,
etc.The 4LO indicator will come on.
*2*1

244 2-4. Using other driving systems
■If the 4LO indicator light blinks
●If the 4LO indicator continues to blink when shifting between 4H and 4L,
stop the vehicle completely, move the shift lever to N and operate the
switch again.
● If the shift lever is moved before the 4LO indicator turns on/off, the trans-
fer mode may not be shifted completely. The transfer mode disengages
both the front and rear driveshafts from the powertrain and allows the
vehicle to move regardless of the shift position. (At this time, the indicator
blinks and the buzzer sounds.)
Therefore, the vehicle is free to roll even if the automatic transmission is in
P. You or someone else could be seriously injured. You must complete the
shifting of the transfer mode.
To complete the shifting, stop the vehicle completely, return the shift lever
to N, and confirm that the shift was completed (The indicator turns on/off).
● If the engine coolant temperature is too low, the transfer mode may not
be able to be shifted. When the engine is warmer, operate the switch
again.
If the 4LO indicator light continues to blink even after attempting the above,
there may be a malfunction in the engine, the brake system or the four-
wheel drive system. In this case, you may not be able to shift between 4H
and 4L. Have the vehicle inspected by your Toyota dealer immediately.
■ Shifting to 4L
VSC is automatically turned off.
■ Four-wheel drive usage frequency
You should drive in four-wheel drive for at least 10 miles (16 km) each
month.
This will assure that the front drive components are lubricated.

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2-5. Driving information
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When driving
Winter driving tips
Carry out the necessary preparations and inspections before driving
the vehicle in winter. Always drive the vehicle in a manner appropri-
ate to the prevailing weather conditions.
■ Pre-winter preparations
●Use fluids that are appropriate to the prevailing outside tem-
peratures.
• Engine oil
• Engine coolant
• Washer fluid
● Have a service technician inspect the level and specific grav-
ity of battery electrolyte.
● 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.
■Before driving the vehicle
Perform the following according to the driving conditions.
●Do not try to forcibly open a window, scrape an outside rear
view mirror surface or move a wiper or outside rear view mir-
ror 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 th e climate control system fan,
remove any snow that has accumulated on the air inlet vents
in front of the windshield.
● Remove any ice that has accumu lated on the vehicle chassis.
● Periodically check for and remove any excess ice or snow
that may have accumulated in the wheel well or on the
brakes.

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4-3. Do-it-yourself maintenance
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Maintenance and care
14 ECU-IG No.1 7.5 A
Anti-lock brake system, vehicle sta-
bility control system, multiplex com-
munication system, intuitive
parking assist system, power front
driver’s seat, power tilt and power
telescopic, shift lock, tire pressure
warning system, accessory meter,
trailer towing, power outlet, electric
moon roof
15 LH-IG 7.5 A Back-up lights, charging system,
gauges and meters, turn signal
lights, air conditioning system, seat
heaters, back window defogger
16 4WD 20 A Four-wheel drive control system
17 WSH 20 A Window washer
18 WIPER 30 A Wiper and washer
19 ECU-IG No.2 7.5 A Multiplex communication system,
power steering
20 TAIL 15 A Tail lights, trailer lights (tail lights),
parking lights, outer foot lights
21 A/C IG 10 A Air conditioning system
22 TOW BK/UP 7.5 A Trailer lights
23 SEAT-HTR 20 A Seat heaters or heater and venti-
lated seats
24 PANEL 7.5 A Instrument panel lights, glove box
light, accessory meter, audio sys-
tem, rear view monitor, navigation
system, rear seat entertainment
system, gauges and meters, air
conditioning system
FuseAmpereCircuit

614 5-2. Steps to take in an emergency
*2: Driver’s seat belt reminder:The driver’s seat belt reminder sounds to alert the driver that his or her seat
belt is not fastened. Once the engine switch is turned to the ON or START
position, the buzzer sounds for 6 seconds. If the vehicle has reached a
speed of at least 12 mph (20 km/h), the buzzer sounds intermittently for 10
seconds. Then, if the seat belt is still unfastened, the buzzer will sound in a
different tone for 20 more seconds.
*3: Front passenger’s seat belt reminder:
The front passenger’s seat belt reminder sounds to alert the right front pas-
senger that his or her seat belt is not fastened. The buzzer sounds intermit-
tently for 10 seconds after the vehicle has reached a speed of at least 12
mph (20 km/h). Then, if the seat belt is still unfastened, the buzzer will sound
in a different tone for 20 more seconds.
*4: Vehicles without multi-information display
*5: Vehicles with multi-information display
*6: Refer to the separate “Scheduled Maintenance Guide” or “Owner’s ManualSupplement” for the maintenance interval applicable to your vehicle.
■ Four-wheel drive system warning buzzer
The buzzer indicated that the transfer mode is not selected correctly.
■ Key reminder buzzer
The buzzer indicates that the key has not been removed (with the engine
switch in the ACC or LOCK position and the driver’s door opened).
■ Open moon roof reminder buzzer
The buzzer indicate that the moon roof is still opened (with the engine switch
in the ACC or LOCK position and the driver’s door opened).
■ If the malfunction indicator lamp comes on while driving
First check the following:
● Is your vehicle low on gas?
If it is, refuel the vehicle immediately.
● Is the fuel tank cap loose?
If it is, tighten it securely.
The light will go off after taking several driving trips.
If the light does not go off even after several trips, contact your Toyota dealer
as soon as possible.

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Abbreviation list
Abbreviation/Acronym list
ABBREVIATIONSMEANING
2WDTwo Wheel Drive
4WD Four Wheel Drive ABS Anti-Lock Brake System
ACC Accessory
AI-SHIFT Artificial Intelligence shifting ALR Automatic Locking Retractor
A-TRAC Active Traction Control
AUTO LSD Automatic Limited Slip Differential CAL Calibration
CRS Child Restraint System
ECU Electronic Control Unit
EDR Event Data Recorder ELR Emergency Locking Retractor
FFV Flexible Fuel Vehicle
GAWR Gross Axle Weight Rating
GCWR Gross Combination Weight Rating
GVWR Gross Vehicle Weight Rating I/M Emission inspection and maintenance
INFO Information
LATCH Lower Anchors and Tethers for Children LED Light Emitting DiodeLT Light truck
M + S Mud + Snow MMT Methylcy clopentadienyl Manganese Tricarbonyl
MTBE Methyl Tertiary Butyl Ether
OBD On Board Diagnostics
PWR Power