2012 TOYOTA TUNDRA lights

5
When trouble arises
619
5-2. Steps to take in an emergency
If a war ning message is displayed (vehicles with multi-infor mation display)
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 messageDetails
(Flashing) Indicates that the engine coolant temperature is
too high
A buzzer also sounds.
Indicates that the automatic transmission fluid
temperature is too high A buzzer also sounds.
If a warning is shown on the multi- information display, stay calm and
perform the following actions:
Master warning light
The master warning light also
comes on or flashes in order to
indicate that a message is cur-
rently being displayed on the
multi-information display.
Multi-information display
If any of the warning lights turns on again after performing the fol-
lowing actions, contact your Toyota dealer.

5
When trouble arises
641
5-2. Steps to take in an emergency
If the engine will not star t
If the engine still does not start after following the correct starting
procedure ( P. 178) or releasing the steering lock (P. 179), confirm
the following points.
■ The engine will not start even when the starter motor oper-
ates normally.
One of the following may be the cause of the problem.
●There may not be sufficient fuel in the vehicle’s tank.
Refuel the vehicle. (
P. 110)
Flex-fuel vehicles: The type of fuel may be different. When
refueling, add the same type of fuel, if available.
After adding a different type of fuel, the engine may run
roughly and driving performance may be reduced for a while
when the engine is first started. In this case, wait until the
engine runs normally.
● The engine may be flooded.
Try to restart the engine once more following correct starting
procedures.
● There may be a malfunction in the engine immobilizer system.
(  P. 1 1 5 )
■ The starter motor turns over slowly, the interior lights and
headlights are dim, or the horn does not sound or sounds at
a low volume.
One of the following may be the cause of the problem.
●The battery may be discharged. ( P. 647)
● The battery terminal connec tions may be loose or corroded.

642 5-2. Steps to take in an emergency
■The starter motor does not turn over, the interior lights and
headlights do not turn on, or the horn does not sound.
One of the following may be the cause of the problem.
● One or both of the battery terminals may be disconnected.
● The battery may be discharged. ( P. 647)
Contact your Toyota dealer if the problem cannot be repaired, or if
repair procedures are unknown.

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.

680 6-1. Specifications
Light bulbs
*: If equipped
A: HB3 halogen bulbs
B: H11 halogen bulbs
C: H10 halogen bulbs
D: Wedge base bulbs (clear)
E: Wedge base bulbs (amber)
F: Double end bulbs
Light BulbsBulb No.WTy p e
Exterior Headlights
(high beam)
9005 65 A
Headlights
(low beam) H11 55 B
Front fog lights
*9145 45 C
Front side marker lights 168 5 D
Front turn signal/parking
lights/daytime running lights
*4157NAK 28/8 E
Rear turn signal lights 3157A 27/8 E
Stop/tail and rear side
marker lights 3157 27/8 D
Back-up lights 921 18 D
License plate lights 168 4.9 D
High mounted stoplight and
cargo lamp 921 18 D
Outer foot light — 5 D
InteriorVanity lights
7065 1.4 F
Personal/interior lights
Front — 5 D
Rear — 5 D
Foot well lighting — 1.4 D

697
6-2. Customization
6
Vehicle specifications
Door lock
(
P. 49) Speed-detecting auto-
matic door lock function
ON OFF
Opening driver’s door
unlocks all doors. OFF ON
Shifting levers to “P”
unlocks all doors. ON OFF
Shifting levers to posi-
tion other than “P” locks
all doors. OFF ON
Unlocking using a key Driver’s door
unlocked in one step, all doors
unlocked in two steps All doors
unlocked in one step
Moon roof
( P. 105) Door key linked opera-
tion
Open and closeOpen only
Close only OFF
Linked operation of
components when door
key is used Slide only Tilt only
Automatic
light off
system
( P. 210) Light sensor sensitivity Level 3 Level 1 to 5
Time elapsed before
headlights automati-
cally turn off after doors
are closed
30 seconds0 seconds
60 seconds
90 seconds
ItemFunctionDefault settingCustomized setting

698 6-2. Customization
ItemFunctionDefault settingCustomizedsetting
Illumination
(
P. 455) Time elapsed before
lights turn off
15 seconds7.5 seconds
30 seconds
Operation after the
engine is off ON OFF
Operation when the
doors are unlocked ON OFF
Seat Belt
Reminder
Buzzer
(
P. 611) Vehicle speed linked
seat belt reminder
buzzer
ON OFF