2012 TOYOTA TUNDRA charging

5
When trouble arises
649
5-2. Steps to take in an emergency
■
Starting the engine when the battery is discharged
The engine cannot be started by push-starting.
■ Avoiding a discharged battery
●Turn off the headlights and the audio system while the engine is turned
off.
● Turn off any unnecessary electrical components when the vehicle is run-
ning at a low speed for an extended period, such as in heavy traffic, etc.
■ When the battery is removed or discharged
●The moon roof must be initialized. ( P. 107)
● Flex-fuel vehicles: The information recorded in the computer will be
cleared, which may cause the engine to run roughly and reduce driving
performance for a while when the engine is first started. In this case, wait
until the engine runs normally.
If the vehicle is running on E85, the engine may stall.
In this case, restart the engine, repeatedly if necessary.
■ Charging the battery
The electricity stored in the battery will discharge gradually even when the
vehicle is not in use, due to natural discharge and the draining effects of cer-
tain electrical appliances. If the vehicle is left for a long time, the battery may
discharge, and the engine may be unable to start. (The battery recharges
automatically during driving.)

674 6-1. Specifications
Ignition system
Electrical system
Spark plug
Make DENSO
Gap
SK20HR11
0.043 in. (1.1 mm)
NOTICE
■Iridium-tipped spark plugs
Use only iridium-tipped spark plugs. Do not adjust gap when tuning engine.
Battery
Open voltage at
68 F (20 C): 12.6  12.8 V Fully charged
12.2  12.4 V Half charged
11 . 8
 12.0 V Discharged
(Voltage checked 20 minutes after the
key is removed with all the lights
turned off)
Charging rates 5 A max.

731
Alphabetical index
Battery
Charging system warning
light .................................... 609
Checking .............................. 553
If the vehicle has discharged battery ............. 647
Preparing and checking before winter ...................... 267
Bluetooth
® audio..................... 377
Bluetooth® phone ................... 426
Bottle holders .......................... 481
Brakes
Brake system warning buzzer ................................ 609
Brake system warning light .................................... 609
Fluid...................................... 550
Parking brake ....................... 187
Brake assist ............................. 249
Break-in tips ............................ 169
Camper information ................ 716
Card holder .............................. 467
Care Exterior ................................. 526
Interior .................................. 529
Seat belts ............................. 530
Cargo capacity ........................ 265
Cargo hooks ............................ 511
Cargo lamp Replacing light bulbs ............ 595
Switch ................................... 460
Wattage ................................ 680
CD changer
CD ........................................ 332
MP3 ...................................... 341
WMA disc ............................. 341
CD player ................................. 332
Certification label ............ 275, 668
Chains ...................................... 268 Child restraint system
Booster seats, definition ........140
Booster seats, installation .....151
Convertible seats, definition .............................140
Convertible seats, installation ...........................151
Front passenger occupant
classification system ........... 135
Infant seats, definition ...........140
Infant seats, installation.........151
Installing CRS with lower anchorages .........................144
Installing CRS with seat
belts ....................................151
Installing CRS with top tether straps ........155, 157, 161
Child safety Airbag precautions ................129
Battery precautions .......554, 650
Child restraint system............140
Child-protectors .......................51
How your child should wear the seat belt ..........................82
Installing child restraints ........144
Moon roof precautions ..........109
Power window lock switch.......98
Power window precautions ...100
Removed wireless remote control battery
precautions .........................576
Seat belt extender
precautions ...........................84
Seat belt precautions ..............82
Seat heater precautions .................503, 505
Child-protectors .........................51
Cleaning Exterior ..................................526
Interior ...................................529
Seat belts ..............................530
Clock ........................................ 490
Compass ...................................520
C

738 Alphabetical index
Inflation pressure sensor ....... 558
Replacing .............................. 623
Rotating tires ......................... 557
Size ....................................... 678
Snow tires ............................. 267
Tire pressure warning reset switch ......................... 558
Tire pressure warning
system ........................ 557, 611
Warning light ......................... 611
Tissue pocket ........................... 475
Tools ......................................... 623
Total load capacity................... 265
TOW/HAUL switch ................... 184
Towing
Bumper towing ...................... 283
Dinghy towing........................ 294
Emergency towing................. 601
Fifth wheel trailer ................... 281
Trailer towing......................... 271
Traction control........................ 249
TRAC ......................................... 249
Trip information ....................... 200
Trip meter ................................. 193
Turn signal lights Replacing light bulbs ..... 591, 594
Switch.................................... 186
Wattage ................................. 680
Vanity lights Vanity lights ........................... 489
Wattage ................................. 680
Vanity mirrors........................... 489
Vehicle identification number ................................... 668
Vehicle stability control........... 249
VSC............................................ 249 Warning buzzers
Brake system ........................ 609
Key reminder................... 53, 614
Open door ..................... 611, 613
Seat belt reminder......... 611, 614
Warning lights ABS ....................................... 610
Airbag system ....................... 610
Anti-lock brake system .......... 610
Automatic transmission fluid temperature................. 610
Brake assist system .............. 610
Brake system ........................ 609
Charging system .... ............... 609
Electronic engine control system ................................ 610
Engine oil pressure ............... 609
Four-wheel drive system
warning buzzer ................... 614
Driver’s seat belt ................... 611
Front passenger occupant
classification system ........... 610
Front passenger’s
seat belt .............................. 611
Low brake fluid ...................... 609
Low engine oil pressure ........ 609
Low fuel level ................ 611, 620
Low tire inflation pressure.............................. 611
Malfunction indicator lamp .... 610
Master warning light .............. 611
Open door ............................. 611
Power steering warning light ..................................... 610
Pretensioners ........................ 610
Seat belt reminder light ......... 611
SRS airbags .......................... 610
Tire pressure warning light.... 611
VSC/TRAC ............................ 610
Warning messages .................. 619
V
W

743
What to do if...
■
Warning lights
P. 6 1 1
or(if equipped)
P. 609 P. 610
P. 609 P. 613
P. 610 P. 611
P. 612
or
P. 6 1 0P. 6 1 1
P. 6 1 3P. 612
P. 6 1 0P. 6 1 1
P. 6 1 1P. 612
*: Slip indicator comes on.P. 6 1 2
Brake system warning
lightPower steering warning
light
Low engine oil pressure
warning light
Charging system
warning lightMaster warning light
Malfunction indicator
lampSlip indicator*
ABS warning lightTire pressure warning
light
Open door warning light
Maintenance required
reminder lightLow fuel level warning
light
SRS warning lightDriver’s seat belt reminder
light
Front passenger’s seat belt
reminder light
Low washer fluid
warning light
Automatic transmission
fluid temperature
warning light
The warning message is displayedP. 619If a warning message is displayed