Toyota 2014 Sienna Manual page 114

1-3. Adjustable components (seats, mirrors, steering wheel)
Stowing the third seats (power seats)
You can operate the power third seats when the shift lever is in P.
Before stowing or returning third seat, remove any items from the
floor area to prevent interference with moving parts.
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Before stowing the third seats
STEP 1
STEP 2
Stow the center seat belt. (P. 131)
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Stowing the third seats
STEP 1
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SIENNA_OM_OM45483U_(U)
Lower the center head restraints
to the lowest position and stow
the seat belt buckles.
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Press and hold the stowing
switch.
A beep sounds twice to indicate
the start of the operation. The
beep sounds again twice when
the operation is completed.
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