Page 95 of 860
95
1
Before driving
SIENNA_U (OM45477U)
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
knob (driver’s side only)
Page 96 of 860
96 1-3. Adjustable components (seats, mirrors, steering wheel)
SIENNA_U (OM45477U)
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)
Page 99 of 860

99
1-3. Adjustable components (s
eats, mirrors, steering wheel)
1
Before driving
SIENNA_U (OM45477U)
■Active head restraints
Even small forces applied to the seatback may cause the head restraint to
move. When a locked head restraint is pushed up forcibly, the head restraint
inner structure may appear. This does not indicate a problem.
CAUTION
■Seat adjustment
● To reduce the risk of sliding under the lap belt during a collision, do not
recline the seat more than necessary.
If the seat is reclined too far, 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.
Adjustments should not be made while driving as the seat may unexpect-
edly move and cause the driver to lose control of the vehicle.
● Manual seat: After adjusting the seat, make sure that the seat is locked in
position.
ITN13N066
During
rear-end
collision
Inner structure
Page 100 of 860
100
1-3. Adjustable components (seats, mirrors, steering wheel)
SIENNA_U (OM45477U)
Rear seats
Second seats (Tip-up seat)Seat position adjustment
lever
Seatback angle adjustment
lever
Second seats (Ottoman seat) Seat position adjustment
lever
Seatback angle adjustment
lever
Ottoman angle adjustment
lever
Second seats (AUTO ACCESS SEAT)
Refer to “AUTO ACCESS SEAT OWNER’S MANUAL”.
Page 101 of 860
101
1-3. Adjustable components (s
eats, mirrors, steering wheel)
1
Before driving
SIENNA_U (OM45477U)
Third seats (manual seat)
Seatback angle adjustment
strap
Third seats (power seat) Seatback angle adjustment
switch
Page 104 of 860
104 1-3. Adjustable components (seats, mirrors, steering wheel)
SIENNA_U (OM45477U)
Removing the second seats
■ Removing the second outside seats (Tip-up seats)
Pull the armrests up.
Pull the seatback adjustment
lever and fold down the seat-
back. The cushion will tip up.
Slide the seat forward to a lock position. Pull the release lever under the
cushion and simultaneously lift
the seat to remove.
STEP1
STEP2
STEP3
Page 105 of 860
105
1-3. Adjustable components (s
eats, mirrors, steering wheel)
1
Before driving
SIENNA_U (OM45477U)■
Removing the second outside seats (Ottoman seats)
Pull the armrests up.
Pull the seatback adjustment
lever and fold down the seat-
back.
Slide the seat to a forward lock position. Pull the release lever behind the
seatback straight back, then up.
While moving the lever up,
simultaneously lift the seat to
remove.
STEP1
STEP2
STEP3
Page 110 of 860
110 1-3. Adjustable components (seats, mirrors, steering wheel)
SIENNA_U (OM45477U)
Folding down the third seats (power seats)
You can operate the power third seats when the shift lever is in P.
■ Before folding the third seats
Lower the center head restraints
to the lowest position and stow
the seat belt buckles.
Stow the center seat belt. ( P. 130)
■ Folding down the third seatbacks
Press the folding/returning
switch.
■ Returning the third seatbacks
Press the folding/returning switch, returning switch (P. 11 4 ) o r
seatback angle adjustment switch ( P. 101).
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STEP1
STEP2
ITN13N049