2013 Toyota Sienna Owners Manual - Page 1198

3 -1 . Whe n you t hink a m a lfunc t ion ha s oc c urre d AU TO ACCESS SEAT If you suspect that the AUTO ACCESS SEAT is malfunctioning, try the correction procedures listed in the table below. If the seat still does not operate even after trying the procedures, it is likely that the seat is malfunctioning. Do not use the AUTO ACCESS SEAT, and have the seat inspected by your Toyota dealer immediately.