2012 TOYOTA TUNDRA brake light

581
4-3. Do-it-yourself maintenance
4
Maintenance and care
10 STOP
15 AStop lights, high mounted stop-
light, vehicle stability control sys-
tem, anti-lock brake system, shift
lock system, multiport fuel injection
system/sequential multiport fuel
injection system, towing converter
11 TOW BRK 30 A Trailer brake controller
12 IMB 7.5 AMultiport fuel injection system/
sequential multiport fuel injection
system
13 AM2 7.5 A Starting system
14 TOWING 30 A Towing converter
15 AI PMP HTR 10 A Air injection system
16 ALT-S 5 A Charging system
17 TURN-HAZ 15 A Turn signal lights, emergency
flashers, towing converter
18 F/PMP 25 A Fuel system
19 ETCS 10 AMultiport fuel injection system/
sequential multiport fuel injection
system, electric throttle control sys-
tem
20 MET-B 5 A Gauges and meters
21 AMP 30 AAudio system, rear view monitor,
navigation system, rear seat enter-
tainment system
22 RAD NO.1 15 A Audio system, rear view monitor,
navigation system, rear seat enter-
tainment system
FuseAmpereCircuit

585
4-3. Do-it-yourself maintenance
4
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

5
When trouble arises
609
5-2. Steps to take in an emergency
If a war ning light turns on or a war ning buzzer sounds...
Stop the vehicle immediately. Continuing to drive the vehicle may be dangerous.
The following warning indicates a possible problem in the brake sys-
tem. Immediately stop the vehicle in a safe place and contact your
Toyota dealer.
*: Parking brake engaged warning buzzer:
The buzzer sounds to indicate that parking brake is still engaged (with the
vehicle having reached a speed of 3 mph [5 km/h])
Stop the vehicle immediately.
The following warnings indicate the possibility of damage to the vehi-
cle that may lead to an accident. Immediately stop the vehicle in a
safe place and contact your Toyota dealer.
Warning lightWarning light/Details
(U.S.A.)
(Canada) Brake system warning li
ght (warning buzzer)*
• Low brake fluid
• Malfunction in the brake system This light also comes on when the parking brake is
not released. If the light turns off after the parking
brake is fully released, the system is operating nor-
mally.
Warning lightWarning light/Details
Charging system warning light Indicates a malfunction in the vehicle’s charging sys-
tem.
Calmly perform the following actions if any of the warning lights turn
on or flash. If a light turns on or flashes, but then turns off, this does
not necessarily indicate a malfunction in the system.

610 5-2. Steps to take in an emergency
*1: Vehicles without tachometer
*2: The light may come on when the oil level is extremely low. It is not designedto indicate low oil level, and the oil level must be checked using the engine
oil level dipstick.
Have the vehicle inspected immediately.
Failing to investigate the cause of the following warnings may lead to
the system operating abnormally and possibly cause an accident.
Have the vehicle inspected by your Toyota dealer immediately.
Warning lightWarning light/Details
*1Low engine oil pressure warning light
Indicates that the engine oil pressure is too low*2.
Warning lightWarning light/Details
Malfunction indicator lamp Indicates a malfunction in:
• The electronic engine control system;
• The electronic throttle control system;
• The electronic automatic transmission control sys-tem; or
• The emission control system.
SRS warning light Indicates a malfunction in:
• The SRS airbag system;
• The front passenger occupant classification system; or
• The seat belt pretensioner system.
(U.S.A.)
(Canada) ABS warning light
Indicates a malfunction in:
• The ABS; or
• The brake assist system.

616 5-2. Steps to take in an emergency
●If there is a lot of snow or ice on the vehicle, in particular around the
wheels or wheel housings.
●If non-genuine Toyota wheels are used. (Even if you use Toyota
wheels, the tire pressu re warning system may not work properly with
some types of tires.)
●If tire chains are used.
■If the tire pressure warning light frequently comes on after blinking
for 1 minute
If the tire pressure warning light frequently comes on after blinking for 1
minute when the engine switch is turned to the ON position, have it
checked by your Toyota dealer.
■ Customization that can be co nfigured at Toyota dealer
The vehicle speed linked front passenger’s seat belt reminder buzzer can be
disabled. (Customizable features P. 696)
CAUTION
■If the tire pressure warning light comes on
Be sure to observe the following precautions. Failure to do so could
cause loss of vehicle control and re sult in death or serious injury.
●Stop your vehicle in a safe place as soon as possible. Adjust the tire
inflation pressure immediately.
●If the tire pressure warning light comes on even after tire inflation pres-
sure adjustment, it is pr obable that you have a flat tire. Check the tires.
If the tire is flat, change to the spare tire and have the flat tire repaired
by the nearest Toyota dealer.
●Avoid abrupt maneuvering and braking. If the vehicle tires deteriorate,
you could lose control of the steering wheel or the brakes.
■If a blowout or sudden air leakage should occur
The tire pressure warning syste m may not activate immediately.

620 5-2. Steps to take in an emergency
Follow the correction procedures.After taking the specified steps to correct the suspected problem,
check that the warning light turns off.
Indicates a malfunction in the automatic transmis-
sion system A buzzer also sounds.
Warning messageDetailsCorrection procedure
Indicates that one or
more of the doors is not
fully closed. The system also indi-
cates which doors are
not fully closed.
flashes and a
buzzer sounds to indi-
cate that one or more of
the doors is not fully
closed (with the vehicle
having reached a speed
of 3 mph [5 km/h]).
Open door warning light
also comes on. Make sure that all of
the doors are closed.
(Flashing) Indicates that the park-
ing brake is still
engaged with the vehicle
having reached a speed
of more than 3 mph (5
km/h).
A buzzer also sounds
intermittently. Release the parking
brake.
Warning messageDetails

728
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

730
Alphabetical index
Alphabetical index
A/C ..................................... 298, 307
ABS ........................................... 249
Accessory meter ...................... 207
Active traction control system .................................... 249
Air conditioning filter............... 572
Air conditioning system Air conditioning filter .............. 572
Automatic air conditioning system ................................ 298
Manual air conditioning system ................................ 307
Airbags
Airbag operating conditions............................ 125
Airbag precautions for your
child .................................... 129
Airbag warning light............... 610
Curtain shield airbag operating conditions............ 126
Curtain shield airbag precautions ......................... 129
Front passenger occupant classification system ........... 135
General airbag
precautions ......................... 129
Locations of airbags .............. 122
Modification and disposal of airbags ............................ 133
Proper driving posture ........................ 120, 129
Roll sensing of curtain shield airbag off switch .................. 134
Side airbag operating conditions............................ 126
Side airbag precautions ........ 129
SRS airbags .......................... 122
Alarm ......................................... 117
Antenna..................... 329, 371, 526
Anti-lock brake system ABS warning light .................. 610
Anti-lock brake system .......... 249
Armrest ..................................... 506 Audio input ............................... 366
Audio remote controls ............ 368
Audio system
Antenna................. 329, 371, 526
Audio input ............................ 366
Audio visual input .................. 416
AUX port ............................... 366
A/V input port ........................ 416
CD player/changer ................ 332
DVD player............................ 399
iPod ....................................... 349
MP3/WMA disc ..................... 341
Optimal use ........................... 362
Portable music player ........... 366
Radio..................................... 324
Rear seat entertainment
system ................................ 390
Steering wheel audio switch.................................. 368
Type ...................................... 320
USB memory......................... 355
Audio visual input.................... 416
AUTO LSD system ................... 246
Automatic light control system .................................... 214
Automatic transmission Automatic transmission ......... 181
If the shift lever cannot be shifted from P ..................... 643
TOW/HAUL switch ................ 184
AUX port ................................... 366
Auxiliary boxes ....................... 483
A/V input port ........................... 416
Back-up lights
Replacing light bulbs ............. 594
Wattage................................. 680
Back window Back window ......................... 101
Power back window .............. 102
Back window defogger............ 317A
B