2012 TOYOTA TUNDRA ECU

68 1-3. Adjustable components (seats, mirrors, steering wheel)
CAUTION
■When adjusting a rear seat (CrewMax models)
●Be careful that the seat does not hit passengers or luggage.
● Do not recline the seat more than necessary when the vehicle is in motion
to reduce the risk of sliding under the lap belt. If the seat is too reclined,
the lap belt may slide past the hips and apply restraint forces directly to the
abdomen or your neck may contact the shoulder belt, increasing the risk of
death or serious injury in the event of an accident.
● Be careful not to get your hands or feet caught in the seat.
■ Before folding down a rear seat
Do not fold down a rear seat when there are passengers sitting in the rear
seats or when there is luggage placed on/under the rear seats.
■ After adjusting a seat (CrewMax models)
Observe the following precautions. Failure to do so may result in death or
serious injury.
●Make sure that the seat and seatback are securely locked in position by
lightly rocking them back and forth.
● Check that the seat belts are not twisted or caught in the seat.
■ When the seatback is folded/the bo ttom cushion is raised (Double Cab
models)
Do not sit on or place anything on the seatback or storage box while driving.
■ When returning the seats to their original position
Observe the following precautions. Failure to do so may result in death or
serious injury.
●Be careful not to get your hands or feet pinched in the seat.
● Make sure the seatbacks and bottom cushions are securely locked. Fail-
ure to do so will prevent the seat belt from operating properly.
● Check that the seat belts are not twisted or caught in the seat.
● Arrange the seat belts in the proper positions for ready use.

82 1-3. Adjustable components (seats, mirrors, steering wheel)
■Child seat belt usage
The seat belts of your vehicle were principally designed for persons of adult
size.
●Use a child restraint system appropriate for the child, until the child
becomes large enough to properly wear the vehicle’s seat belt. ( P. 140)
● When the child becomes large enough to properly wear the vehicle’s
seat belt, follow the instructions on P. 77 regarding seat belt usage.
■ Replacing the belt after the pretensioner has been activated
If the vehicle is involved in multiple collisions, the pretensioner will activate
for the first collision, but will not activate for the second or subsequent colli-
sions.
■ Seat belt extender
CAUTION
Observe the following precautions to reduce the risk of injury in the event of
sudden braking, sudden swerving or an accident.
Failing to do so may cause death or severe injury.
■Wearing a seat belt
●Ensure that all passengers wear a seat belt.
● Always wear a seat belt properly.
● Each seat belt should be used by one person only. Do not use a seat belt
for more than one person at once, including children.
● Toyota recommends that children be seated in the rear seat and always
use a seat belt and/or an appropriate child restraint system.
If your seat belts cannot be fastened
securely because they are not long
enough, a personalized seat belt
extender is available from your Toyota
dealer free of charge.

84 1-3. Adjustable components (seats, mirrors, steering wheel)
CAUTION
■Seat belt damage and wear
●Ensure that the belt and tab are locked and the belt is not twisted.
If the seat belt does not function correctly, immediately contact your Toyota
dealer.
● Replace the seat assembly, including the belts, if your vehicle has been
involved in a serious accident, even if there is no obvious damage.
● Do not attempt to install, remove, modify, disassemble or dispose of the
seat belts. Have any necessary repairs carried out by your Toyota dealer.
Inappropriate handling of the pretensioner may prevent it from operating
properly resulting in death or serious injury.
■ Before using a front seat be lt (Regular Cab models)
Make sure the seat belt hanger is secured in the raised position before you
fasten the seat belt.
■ Using a seat belt extender
●Do not wear the seat belt extender if you can fasten the seat belt without
the extender.
● Do not use the seat belt extender when installing a child restraint system
because the belt will not securely hold the child restraint system, increas-
ing the risk of death or serious injury in the event of an accident.
● The personalized extender may not be safe on another vehicle, when
used by another person, or at a different seating position other than the
one originally intended.
NOTICE
■When using a seat belt extender
When releasing the seat belt, press on the buckle release button on the
extender, not on the seat belt.
This helps prevent damage to the vehicle interior and the extender itself.

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1
1-3. Adjustable components (seats, mirrors, steering wheel)
Before driving
Steering wheel (manually adjustable type)
The steering wheel can be adjusted to a comfortable position.
■To change the angle
Hold the steering wheel and
press the lever down.
Adjust to the ideal position by
moving the steering wheel
vertically.
After adjustment, pull the lever
up to secure the steering
wheel.
■To change the column length (vehicles with separate type
seats)
Hold the steering wheel and
press the lever down.

86 1-3. Adjustable components (seats, mirrors, steering wheel)
CAUTION
■Caution while driving
Do not adjust the steering wheel while driving.
Doing so may cause the driver to mishandle the vehicle and an accident,
resulting in death or serious injury.
■ After adjusting the steering wheel
Make sure that the steering wheel is securely locked.
Otherwise, the steering wheel may move suddenly, possibly causing an
accident and resulting in death or serious injury.
Adjust to the ideal position by
moving the steering wheel
horizontally.
After adjustment, pull the lever
up to secure the steering
wheel.

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1
1-4. Opening and closing the windows and moon roof
Before driving
Back window
: If equipped
■Closing the back window
Make sure that the back window is securely closed after closing it.
CAUTION
■Caution while driving
Keep the back window closed.
This not only keeps personal belongings from being thrown out, but also pre-
vents exhaust gases from entering the vehicle.
The back window can be opened and closed using the lock release
lever.
OPEN/CLOSE
Push the lock release lever
and slide the back window.

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1
Before driving
1-6. Theft deterrent system
Engine immobilizer system
: If equipped
■System maintenance
The vehicle has a maintenance-free type engine immobilizer system.
■ Conditions that may cause the system to malfunction
● If the key is in contact with a metallic object
● If the key is in close proximity to or touching a key to the security system
(key with a built-in transponder chip) of another vehicle
The vehicle’s keys have built-in tr ansponder chips that prevent the
engine from starting if the key has not been previously registered in
the vehicle’s on-board computer.
Never leave the keys inside the vehicle when you leave the vehicle.
The indicator light flashes after
the key has been removed
from the engine switch to indi-
cate that the system is operat-
ing.
The indicator light stops flash-
ing after the registered key
has been inserted into the
engine switch to indicate that
the system has been can-
celed.

124 1-7. Safety information
Your vehicle is equipped with ADVANCED AIRBAGS designed based
on US motor vehicle safety standards (FMVSS208). The airbag sys-
tem controls airbag deployment power for the driver and right front
passenger. The driver airbag system consists of the driver seat’s
position sensor etc. The front pass enger’s airbag system consists of
the front passenger occupant classification sensor etc.
The main SRS airbag system components are shown above. The
SRS airbag system is controlled by the airbag sensor assembly. The
airbag sensor assembly consists of a safing sensor and an airbag
sensor.
Front bench type seat: The SRS airbags are designed to protect the
driver and right front passenger, and they are not designed to protect
an occupant in the front center seating position.
In certain types of severe frontal or side impacts, the SRS airbag sys-
tem triggers the airbag inflators. A chemical reaction in the inflators
quickly fills the airbags with non-toxic gas to help restrain the motion
of the occupants. Side airbags
AIR BAG ON and AIR BAG
OFF indicator lights
Curtain shield airbags
Front passenger airbag
Knee airbags
Side and curtain shield air-
bag sensors
Front airbag sensors
Airbag sensor assembly
Curtain shield airbag sen-
sors (Double Cab and
CrewMax models)
Front passenger’s seat belt
buckle switch
Occupant detection system
(ECU and sensors)
SRS warning light and
RSCA OFF indicator light
RSCA OFF switch
(4WD models only)
Driver’s seat position sen-
sor
Driver airbag
Driver’s seat belt buckle
switch