Savaria Toyota Sienna Owner's Manual page 27

3. While holding the release handle in the up position, use the other
hand to pull upward on the inboard side of the seat, allowing the
seat to flip to the side.
4. A click will be heard when the seat is in the "up and locked"
position. Verify this by ensuring that the pin at the rear of the seat
base is through the top hole.
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