2012 TOYOTA TUNDRA Owners Manual

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
643
5-2. Steps to take in an emergency
If the shift lever cannot be shifted from P
If the shift lever cannot be shifted with your foot on the brake, there
may be a problem with the shift lock system (a system to prevent
accidental operation of the shift lever). Have the vehicle inspected by
your Toyota dealer immediately.
The following steps may be used as an emergency measure to
ensure that the shift lever can be shifted.
Set the parking brake.
Turn the engine switch to the ACC or ON position.
Depress the brake pedal.
Pry the cover up with a flathead screwdriver or equivalent.
Floor shift type

644 5-2. Steps to take in an emergency
Column-shift typePress the shift lock override button.
The shift lever can be shifted while the button is pressed.
Floor shift type

5
When trouble arises
645
5-2. Steps to take in an emergency
Column-shift type

646
5-2. Steps to take in an emergency
If you lose your keys
■If you lose all your master keys. ( vehicles with engine immobilizer sys-
tem)
You cannot make new keys; the whole engine immobilizer system must be
replaced.
New genuine Toyota keys can be made by your Toyota dealer using
the key number stamped on your key number plate. Vehicles with
engine immobilizer system, the dealer will also need the master key.
( P. 44)

5
When trouble arises
647
5-2. Steps to take in an emergency
If the vehicle batter y is discharged
.
The following procedures may be used to start the engine if the
vehicle’s battery is discharged.
You can call your Toyota dealer or qualified repair shop.
If you have a set of jumper (or boo ster) cables and a second vehi-
cle with a 12-volt battery, you can jump start your Toyota following
the steps below.
Connect the jumper cables.
4.0L V6 (1GR-FE) engine
4.6L V8 (1UR-FE) and 5.7L V8 (3UR-FE, 3UR-FBE) engines

648 5-2. Steps to take in an emergency
Positive (+) battery terminal on your vehicle
Positive (+) battery terminal on the second vehicle
Negative (-) battery terminal on the second vehicle
Connect the jumper cable to ground on your vehicle as shown in
the illustration.Start the engine of the second vehicle. Increase the engine
speed slightly and maintain at that level for approximately 5
minutes to recharge the battery of your vehicle.
Maintain the engine speed of the second vehicle and start
the vehicle’s engine.
Once the vehicle’s engine has started, remove the jumper
cables in the exact reverse order in which they were con-
nected.
Once the engine starts, have the vehicle checked at your Toyota
dealer as soon as possible.