Toyota Sienna 2010 Owner's Manual page 71

1-3. Adjustable components (seats, mirrors, steering wheel)
Folding the third seats (power seats)
You can operate the power third seats when the engine switch is in
the "ACC" or "LOCK" position, and/or the shift lever is in P.
Before folding the third seats
■
STEP 1
Stow the center seat belt. (→P. 87)
STEP 2
Folding the third seats
■
Raising the third seats
■
Press the folding/returning switch, returning switch (→P. 76) or
seatback angle adjustment switch (→P. 61).
72
Lower the head restraints to the
lowest position and stow the seat
belt buckles.
Press the
switch.
folding/returning