Page 82 of 872
82
1-2. Opening, closing and locking the doors
SIENNA_OM_OM45483U_(U)
Back door
The back door can be locked and unlocked using the entry function
(vehicles with a smart key system), wireless remote control or door
lock switch.
The back door can be opened using the back door opener.
In addition, the power back door can be opened/closed using the
power back door switch or wireless remote control.
■ Locking and unlocking the back door
Entry function (vehicles with a smart key system)
P. 3 7
Wireless remote control
P. 5 3
Door lock switch
P. 6 1
■ Opening the back door from outside the vehicle
Back door opener Raise the back door while
pressing the back door opener
to release the lock to open the
back door.
Wireless remote control (veh icles with power back door)
P. 5 3
Page 92 of 872

92 1-2. Opening, closing and locking the doors
SIENNA_OM_OM45483U_(U)
CAUTION
●In the following situations, the power back door may detect an abnormali\
ty
and automatic operation may be stopped. In this case, the back door has
to be operated manually. Take extra care when on an incline, as the back
door may open or close abruptly.
• When the back door contacts an obstacle
• Vehicles without a smart key system:
When the battery voltage suddenly drops, such as when the engine
switch is turned to the “ON” position or the engine is started during
automatic operation
Vehicles with a smart key system:
When the battery voltage suddenly drops, such as when the “ENGINE
START STOP” switch is turned to the IGNITION ON mode or the
engine is started during automatic operation
● If a bicycle carrier or similar heavy object is attached to the back door, the
power back door may not operate, causing itself to malfunction, or the
back door may suddenly shut again after being opened, causing some-
one’s hands, head or neck to be caught and injured. When installing an
accessory part to the back door, using a genuine Toyota part is recom-
mended.
Page 97 of 872
97
1-3. Adjustable components (s
eats, mirrors, steering wheel)
1
Before driving
SIENNA_OM_OM45483U_(U)
Power easy access system (vehicles with driving position
memory)
When the driver enters and exits t he vehicle, the driver’s seat will
automatically perform the following operations:
Exiting the vehicle: When all of
the following actions have been
performed, the seat will move
backward (auto away function):
• The shift lever has been shifted toP
• Vehicles without a smart key sys- tem: The engine switch has been
turned off.
Vehicles with a smart key system:
The “ENGINE START STOP”
switch has been turned off.
• The driver seat belt has been unfastened
Page 98 of 872
98 1-3. Adjustable components (seats, mirrors, steering wheel)
SIENNA_OM_OM45483U_(U) Entering the vehicle: When
either of the following actions
has been performed, the seat
will move forward (auto return
function):
• Vehicles without a smart key sys-
tem: The engine switch has been
turned to the “ACC” position.
Vehicles with a smart key system:
The “ENGINE START STOP”
switch has been turned to
ACCESSORY mode.
• The driver seat belt has been fas-
tened
Active head restraints
When the occupant’s lower back
presses against the seatback
during a rear-end collision, the
head restraint moves slightly for-
ward and upward to help reduce
the risk of whiplash on the seat
occupant.
ITN13N065
■The auto away function for exiting th e driver seat (vehicles with driving
position memory)
If the seat is already close to the rearmost position, the auto away function
may not operate when the driver exits the vehicle.
Page 116 of 872

116 1-3. Adjustable components (seats, mirrors, steering wheel)
SIENNA_OM_OM45483U_(U)
■Power third seat
●If the indicator light above the switches flashes three times when the fold-
ing/returning switch is pressed, the folding operation will not start. Make
sure the shift lever is in P.
● If any of the following conditions occur while the seat is operating, the
seat operation will stop. The indicator light above the switches will flash
three times and a beep will sound for about 10 seconds:
• An object is caught between the seatback and seat cushion.
• The stowing switch is released.
• Other power third seat switch is pushed while operating the stowing
switch.
• The shift lever is moved from P when the engine switch is turned to the “ON” position (vehicles without a smart key system) or the “ENGINE
START STOP” switch is in IGNITION ON mode (vehicles with a smart
key system).
If the engine is started during operating, the seat operation may also be
stopped.
To continue the folding operation, the seatback must be returned to its
original position first.
■ AUTO ACCESS SEAT (if equipped)
The AUTO ACCESS SEAT cannot be removed.
■ “3RD SEAT” warning light ( vehicles with power third seat)
The warning light comes on if the third
seat operation is not yet complete when
the engine switch is turned to the “ON”
position (vehicles without a smart key
system) or the “ENGINE START STOP”
switch is in IGNITION ON mode (vehicles
with a smart key system).
ITN13N059
Page 118 of 872

118 1-3. Adjustable components (seats, mirrors, steering wheel)
SIENNA_OM_OM45483U_(U)
CAUTION
■After returning the rear seatbacks or installing seats
Observe the following precautions. Failure to do so may result in death or
serious injury.
● 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 seatback.
● Make sure the seat is locked in place by trying to shake the seatback and
lift up the seat cushion.
■ Removing the second seats
●Do not leave a seat in the vehicle if it has been disengaged from the floor.
● Do not sit on or place anything on a seat that has been removed from the\
vehicle.
■ Stowing the third seats
●Make sure that the seat path is clear before moving the seat. Otherwise,
injury may result from contact with, or by being pinched by parts of the
seat.
● Manual third seats: Do not sit on the third seat when it is in the stowed
position with the seatback upright.
● Power third seats: Do not continue the stowing operation when the indica-
tor above the stowing switch and returning switch comes on or flashes. An
object or a person may be caught in the seat.
● Power third seats: During the stowing operation, to prevent the vehicle
from moving, do not shift the shift lever out of P with the engine switch in
the “ON” position (vehicles without a smart key system) or the “ENGINE
START STOP” switch in IGNITION ON mode (vehicles with a smart key
system).
Page 121 of 872
121
1
1-3. Adjustable components (seats, mirrors, steering wheel)
Before driving
SIENNA_OM_OM45483U_(U)
Driving position memor y
: If equipped
Your preferred driving position (the position of the driver’s seat and
outside rear view mirrors) can be memorized and recalled with the
touch of a button. It is also possi ble to set this function to activate
automatically when th e doors are unlocked.
Two different driving positions can be entered into memory.
■ Entering a position to memory
Vehicles without a smart key system
Turn the engine switch to the “ON” position.
Vehicles with a smart key system
Turn the “ENGINE START STOP” switch to IGNITION ON
mode.
Adjust the driver’s seat and outside rear view mirrors to the
desired positions. Press the “SET” button, then
within 3 seconds press button
“1” or “2” until the signal
beeps.
If the selected button has
already been preset, the previ-
ously recorded position will be
overwritten.
STEP1
STEP2
STEP3
Page 122 of 872
122 1-3. Adjustable components (seats, mirrors, steering wheel)
SIENNA_OM_OM45483U_(U)
■Recalling the memorized position
Check that the shift lever is in P.
Vehicles without a smart key system
Turn the engine switch to the “ON” position.
Vehicles with a smart key system
Turn the “ENGINE START STOP” switch to IGNITION ON
mode.
Press button “1” or “2” to recall
the desired position.
STEP1
STEP2