Page 89 of 872

89
1-2. Opening, closing and locking the doors
1
Before driving
SIENNA_OM_OM45483U_(U)
CAUTION
■
Operating the back door
Observe the following precautions.
Failure to do so may cause parts of the body to be caught, resulting in death
or serious injury.
●Remove any heavy loads, such as snow and ice, from the back door
before opening it. Failure to do so may cause the back door to suddenly
shut again after it is opened.
● When opening or closing the back door, thoroughly check to make sure
the surrounding area is safe.
● If anyone is in the vicinity, make sure they are safe and let them know that
the back door is about to open or close.
● Use caution when opening or closing the back door in windy weather as it
may move abruptly in strong wind.
●The back door may suddenly shut if it is
not opened fully. It is more difficult to
open or close the back door on an
incline than on a level surface, so
beware of the back door unexpectedly
opening or closing by itself. Make sure
that the back door is fully open and
secure before using the luggage com-
partment.
Page 90 of 872
90 1-2. Opening, closing and locking the doors
SIENNA_OM_OM45483U_(U)
CAUTION
●Do not place your hands on the back door damper stay to close the back
door, and do not hang on the back door damper stay.
Doing so may cause hands to be caught or the back door damper stay to
break, causing an accident.
● If a bicycle carrier or similar heavy object is attached to the back door, it
may suddenly shut again after being opened, causing someone’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 recommended.
●When closing the back door, take extra
care to prevent your fingers etc. from
being caught.
● When closing the back door, make sure
to press it lightly on its outer surface. If
the back door handle is used to fully
close the back door, it may result in
hands or arms being caught.
Page 91 of 872

91
1-2. Opening, closing and locking the doors
1
Before driving
SIENNA_OM_OM45483U_(U)
CAUTION
■
Back door closer (if equipped)
● Use caution when using the back door closer as it still operates when the
power back door system is canceled.
■ Power back door (if equipped)
Observe the following precautions when operating the power back door.
Failure to do so may cause death or serious injury.
●Check the safety of the surrounding area to make sure there are no obsta-
cles or anything that could cause any of your belongings to get caught.
● If anyone is in the vicinity, make sure they are safe and let them know that
the back door is about to open or close.
● If the operating conditions of the power back door are no longer met, a
buzzer may sound and the back door may stop opening or closing. The
back door then has to be operated manually. Take extra care when on an
incline, as the back door may open or close abruptly.
● On an incline, the back door may suddenly shut after it opens. Make sure
the back door is fully open and secure.
●In the event that the back door is left
slightly open, the back door closer will
automatically close it to the fully closed
position. It takes several seconds
before the back door closer begins to
operate. Be careful not to catch fingers
or anything else in the back door, as
this may cause bone fractures or other
serious injuries.
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 93 of 872

93
1-2. Opening, closing and locking the doors
1
Before driving
SIENNA_OM_OM45483U_(U)
CAUTION
■
Jam protection function (vehicles with power back door)
Observe the following precautions.
Failure to do so may cause death or serious injury.
●Although the back door stops closing when the jam protection function
detects an object, take extra care as you may still be injured if part of your
body is already caught.
● Never use any part of your body to intentionally activate the jam protection
function.
● The jam protection function may not work if something gets caught just
before the back door fully closes. Be careful not to catch fingers or any-
thing else.
● The jam protection function may not work depending on the shape of the
object that is caught. Be careful not to catch fingers or anything else.
NOTICE
■To prevent damage to the power back door
●Make sure that there is no ice between the back door and frame that
would prevent movement of the back door. Operating the power back door
when excessive load is present on the back door may cause a malfunc-
tion.
● Do not apply excessive force to the back door while the power back door
is operating.
● Take care not to damage the sensors (installed on the right and left edges
of the power back door) with a knife or other sharp object. If the sensor is
disconnected, the power back door will not operate in automatic operation.
Page 94 of 872
94 1-2. Opening, closing and locking the doors
SIENNA_OM_OM45483U_(U)
NOTICE
■Back door damper stays
The back door is equipped with damper stays that hold the back door in
place.
Observe the following precautions.
Failure to do so may cause damage to the back door damper stay, resulting
in malfunction.
■ To prevent back door closer malfunction
Do not apply excessive force to the back door while the back door closer is
operating.
●Do not attach any foreign objects, such
as stickers, plastic sheets, or adhesives
to the damper stay rod.
● Do not touch the damper stay rod with
gloves or other fabric items.
● Do not attach any accessories other
than genuine Toyota parts to the back
door.
● Do not place your hand on the damper
stay or apply lateral forces to it.
Damper stay
Page 95 of 872
95
1
Before driving
SIENNA_OM_OM45483U_(U)
1-3. Adjustable components (seats, mirrors, steering wheel)
Front seats
Manual seat
Seat position adjustment
lever
Seatback angle adjustment
lever
Vertical height adjustment
lever (driver’s side only)
Lumbar support adjustment
switch (driver’s side only)*
*: if equipped
Page 96 of 872
96 1-3. Adjustable components (seats, mirrors, steering wheel)
SIENNA_OM_OM45483U_(U)
Power seat
Seat position adjustment
switch
Seatback angle adjustment
switch
Seat cushion (front) angle
adjustment switch (driver’s
side only)
Vertical height adjustment
switch (driver’s side only)
Lumbar support adjustment
switch (driver’s side only)