TOYOTA 2011 Sienna - Manual (Page 147)

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1-3. Adjustable components (seats, mirrors, steering wheel)
■ Removing the second center seat (if equipped)
Pull the lock release strap and
fold down the second center
seatback.
Make sure that the head restraint
is in the lowest position.
Pull the lock release strap under
the seat to remove the seat.
Retract the cushion leg.
Stow the seat in the storage box
of the luggage room (cushion
side first).
Engage the stow latch buckle to
hold the seat and tighten the
latch strap.
STEP 1
STEP 2
STEP 3