2022 TOYOTA TUNDRA ECU

1203-2. Opening, closing and locking the doors
◆Smart key system (if equipped)
Carry the electronic key to enable this function.
Grip the driver’s door handle
to unlock the door. Grip the
passenger’s door handle to
unlock all the doors.
Make sure to touch the sensor
on the back of the handle.
The doors cannot be unlocked
for 3 seconds after the doors are
locked.
Touch the lock sensor (the indent ation on the upper part or lower
part of the front door h andle) to lock the doors.
Check that the door is securely locked.
■Operation signals (vehicles with a wireless remote control or s mart key
system)
A buzzer sounds and the emergency flashers flash to indicate th at the doors
have been locked/unlocked. (Locked: once; Unlocked: twice)
■ Security feature (vehicles with a wireless remote control or sm art key
system)
If a door is not opened within approximately 60 seconds after t he vehicle is
unlocked, the security feature automatically locks the vehicle again.
■ When the door cannot be locked by the lock sensor on the upper part of
the door handle (vehicles with a smart key system)
■ Door lock buzzer (vehicles with a smart key system)
If an attempt to lock the doors is made when a door is not full y closed, a
buzzer sounds continuously for 5 seconds. Fully close the door to stop the
buzzer, and lock the vehicle once more.
■ Alarm (if equipped)
Locking the doors will set the alarm system. ( P. 88)
1
If the door will not lock even when the top-
side sensor area is touched, try touching
both the topside and underside sensor
areas at the same time.
2

1263-2. Opening, closing and locking the doors
Tailgate
Unlock the tailgate
Lock the tailgate
Pull the handle
Open the tailgate slowly
Tailgate will open slowly due to
damper.
The support cables will hold the
tailgate horizontal.
Lift and closing the tailgate
After closing the tailgate, try pulling
it toward you to make sure it is
securely locked.
The tailgate can be opened using the tailgate handle. The tail-
gate can be locked/ unlocked using a key.
Locking/unlocking the tailgate
1
2
Opening/closing the tailgate
1
2
3

1303-2. Opening, closing and locking the doors
For rear end protection and easier
step-up loading.
To get on the rear step bumper,
use the shaded area in the illustra-
tion.
Rear step bumper
WARNING
■Before removing the tailgate
Disconnect the wire harness between the back-up camera and the vehicle.
Failure to do so may result in serious personal injury or damage to the vehi-
cle components.
■ Caution while driving
Observe the following precautions.
Failure to do so may result in death or serious personal injury.
● Do not drive with the tailgate open.
● Do not allow others to get on the rear step bumper.
NOTICE
■To prevent damage to the tailgate wire harness
Do not pull out all of the tailgate wire harness before opening the tailgate.
■ To prevent damage to the camera lens
Store the removed tailgate with the back-up camera lens facing upward.
■ After closing the tailgate
Try pulling it toward you to make sure it is securely locked.
■ To prevent damage to the rear step bumper
Do not allow more than one person to get on the rear step bumper at a time.
■ To prevent damage to the tailgate and rear step bumper
Avoid possible contact between tailgate and rear bumper during tailgate
removal and reinstall.

1353-2. Opening, closing and locking the doors
3
Operation of each component
■Note for the entry function
●Even when the electronic key is within the effective range (detection areas),
the system may not operate properly in the following cases:
• The electronic key is too close to the window or outside door handle, near
the ground, or in a high place when the doors are locked or unl ocked.
• The electronic key is on the instrument panel or floor, or in the console
box or glove box when the engine is started or engine switch mo des are
changed.
● Do not leave the electronic key on top of the instrument panel or near the
door pockets when exiting the vehicle. Depending on the radio w ave recep-
tion conditions, it may be detected by the antenna outside the cabin and the
door will become lockable from the outside, possibly trapping the electronic
key inside the vehicle.
● As long as the electronic key is within the effective range, th e doors may be
locked or unlocked by anyone. However, only the doors detecting the elec-
tronic key can be used to unlock the vehicle.
● Even if the electronic key is not inside the vehicle, it may be possible to start
the engine if the electronic key is near the window.
● The doors may unlock or lock if a large amount of water splashes on the
door handle, such as in the rain or in a car wash, when the electronic key is
within the effective range. (The doors will automatically be lo cked after
approximately 60 seconds if the doors are not opened and closed.)
● If the wireless remote control is used to lock the doors when t he electronic
key is near the vehicle, there is a possibility that the door m ay not be
unlocked by the entry function. (Use the wireless remote contro l to unlock
the doors.)
● Touching the door lock or unlock sensor while wearing gloves ma y prevent
lock or unlock operation. Remove the gloves and touch the lock sensor
again.
● When the lock operation is performed using the lock sensor, rec ognition sig-
nals will be shown up to two consecutive times. After this, no recognition
signals will be given.
● If the door handle becomes wet while the electronic key is with in the effec-
tive range, the door may lock and unlock repeatedly. In this case, follow the
following correction procedures to wash the vehicle:
• Place the electronic key in a location 6 ft. (2 m) or more awa y from the
vehicle. (Take care to ensure that the key is not stolen.)
• Set the electronic key to battery-saving mode to disable the s mart key
system. ( P. 133)
● If the electronic key is inside the vehicle and a door handle b ecomes wet
during a car wash, a message may be shown on the multi-informat ion dis-
play and a buzzer will sound outside the vehicle. To turn off t he alarm, lock
all the doors.

1443-3. Adjusting the seats
WARNING
■When raising the bottom cushion or fold the seatbacks down
Observe the following precautions.
Failure to do so may result in death or serious injury.
● Stop the vehicle on level ground, set the parking brake and shi ft the shift
lever to P (automatic transmission) or N (manual transmission).
Access Cab models
● Do not allow anyone to raise the bottom cushion while driving.
● Do not allow anyone to sit on the auxiliary box
Double Cab models
● Do not allow anyone to fold the seatbacks down while driving.
● Do not allow anyone to sit on the folded seatbacks while drivin g.
■ 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.
Access Cab models
● Make sure the bottom cushions are securely locked.
Double Cab models
● Make sure the seatback is securely locked by pushing it forward and rear-
ward on the top.
● Check that the seat belts are not twisted or caught in the seat.
● Arrange the seat belts in the proper positions for ready use.
NOTICE
■Stowing the seat belts
The seat belts and the buckles must be stowed before you raise the bottom
cushion or fold down the rear seatbacks.

1493-4. Adjusting the steering wheel and mirrors
3
Operation of each component
Steering wheel
Hold the steering wheel and
push the lever down.
Adjust to the ideal position by
moving the steering wheel hori-
zontally and vertically.
After adjustment, pull the lever up
to secure the steering wheel.
To sound the horn, press on or
close to the mark.
■After adjusting the steering wheel
Make sure that the steering wheel is securely locked.
The horn may not sound if the steer ing wheel is not securely locked.
Adjustment procedure
1
2
Horn

1503-4. Adjusting the steering wheel and mirrors
WARNING
■Caution while driving
Do not adjust the steering wheel while driving.
Doing so may cause the driver to mishandle the vehicle and caus e an acci-
dent, 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 causi ng an
accident and resulting in death or serious injury. Also, the ho rn may not
sound if the steering wheel is not securely locked.

1593-5. Opening, closing the windows and moon roof
3
Operation of each component
Back window (vehicles with sliding type)
Open/close
Push the lock release lever and
slide the back window.
■Closing the back window
Make sure that the back window is securely closed after closing it.
Opening and closing
WARNING
■Caution while driving
Keep the back window closed.
This not only keeps personal belongings from being thrown out, but also
prevents exhaust gases from entering the vehicle.