2010 TOYOTA TUNDRA brake light

568 4-3. Do-it-yourself maintenance
14 ECU-IG No.1 7.5 AAnti-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,
gauge 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
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 7.5A 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
595
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.

596 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.

5
When trouble arises
601
5-2. Steps to take in an emergency
●If a radio set at similar frequencies is in use in the vehicle.
●If a window tint that affects the radio wave signals is installed.
●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 comes on after blinking for 1
minute frequently
If the tire pressure warning light comes on after blinking for 1 minute fre-
quently when the engine switch is turned to the ON position, have it
checked by your Toyota dealer.
■ After changing the engine oil (U.S.A. only)
Make sure to reset the oil maintenance data. ( P. 532)
■ 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. 684)
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 result 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.

5
When trouble arises
605
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.
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.
Indicates that the
washer fluid level is low. A buzzer also sounds. Add washer fluid.

706
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

708
Alphabetical index
Alphabetical index
A/C ..................................... 288, 297
ABS ........................................... 243
Accessory meter ...................... 210
Active traction control system .................................... 243
Air conditioning filter............... 555
Air conditioning system Air conditioning filter .............. 555
Automatic air conditioning system ................................ 288
Manual air conditioning system ................................ 297
Airbags
Airbag operating conditions............................ 123
Airbag precautions for your
child .................................... 128
Airbag warning light............... 596
Curtain shield airbag operating conditions............ 124
Curtain shield airbag precautions ......................... 130
Front passenger occupant classification system ........... 136
General airbag
precautions ......................... 127
Locations of airbags .............. 120
Modification and disposal of airbags ............................ 131
Passenger airbag off switch .......................... 132, 151
Proper driving posture ........................ 118, 127
Roll sensing of curtain shield airbag off switch .................. 134
Side airbag operating conditions............................ 124
Side airbag precautions ........ 129
SRS airbags .......................... 120
Alarm ......................................... 116
Antenna..................................... 319
Anti-lock brake system ABS warning light .................. 596 Anti-lock brake system .......... 243
Armrest ..................................... 495
Ashtray ..................................... 479
Audio input ............................... 356
Audio remote controls ............ 358
Audio system A/V input adapter .................. 403
Antenna................................. 319
Audio input ............................ 356
Audio visual input .................. 403
AUX adapter ......................... 356
CD player/changer ................ 322
DVD player............................ 386
iPod
®..................................... 339
MP3/WMA disc ..................... 331
Optimal use ........................... 352
Portable music player ........... 356
Radio..................................... 314
Rear seat entertainment system ................................ 377
Steering wheel audio switch.................................. 358
Type ...................................... 310
USB memory......................... 345
Audio visual input.................... 403
AUTO LSD system ................... 240
Automatic light control system .................................... 215
Automatic transmission Automatic transmission ......... 186
If the shift lever cannot be shifted from P ..................... 627
TOW/HAUL switch ................ 189
AUX adapter ............................. 356
Auxiliary boxes ....................... 469
A/V input adapter ..................... 403
Back-up lights Replacing light bulbs ............. 577
Wattage................................. 668
Back window Back window ......................... 100
Power back window .............. 101
A
B

709
Alphabetical index
Back window defogger ........... 307
Battery
Charging system warning light .................................... 595
Checking .............................. 538
If the vehicle has
discharged battery ............. 631
Preparing and checking
before winter ...................... 260
Bluetooth
® audio..................... 361
Bluetooth® phone ................... 413
Bottle holders .......................... 467
Brakes Brake system warning
buzzer ........................ 241, 247
Brake system warning light .................................... 595
Fluid...................................... 535
Parking brake ....................... 192
Brake assist ............................. 243
Break-in tips ............................ 175
Camper information ................ 693
Card holder .............................. 453
Care
Exterior ................................. 512
Interior .................................. 514
Seat belts ............................. 515
Cargo capacity ........................ 258
Cargo hooks ............................ 499
Cargo lamp Replacing light bulbs ............ 578
Switch ................................... 446
Wattage ................................ 668
CD changer CD ........................................ 322
MP3 ...................................... 331
WMA disc ............................. 331
CD player ................................. 322
Certification label ............ 272, 653
Chains ...................................... 261
Child restraint system Booster seats, definition ....... 143 Booster seats, installation .....160
Convertible seats,
definition .............................143
Convertible seats, installation ...........................159
Front passenger occupant classification system ........... 136
Infant seats, definition ...........143
Infant seats, installation.........158
Installing CRS with lower anchorages .........152, 155, 156
Installing CRS with seat belts ....................................158
Installing CRS with top
tether straps ........161, 163, 167
Passenger airbag off switch .......................... 132, 151
Child safety Airbag precautions ................127
Battery precautions .......539, 633
Child restraint system............143
Child-protectors .......................49
How your child should wear the seat belt ..........................82
Installing child restraints ........149
Moon roof precautions ..........108
Power window lock switch.......98
Power window precautions .....99
Removed wireless remote control battery
precautions .........................559
Seat belt extender
precautions ...........................84
Seat belt precautions ..............83
Seat heater precautions .................492, 494
Child-protectors .........................49
Cigarette lighter .......................481
Cleaning Exterior ..................................512
Interior ...................................514
Seat belts ..............................515
Clock ........................................ 476
C