See also:

Unfastening the rear center seatbelt
Push the release button of the center seatbelt buckle (on the left-hand side) to unfasten the seatbelt. 1. Insert a key or other hard pointed object into the slot in the connector (buckle) ...

Forward and backward adjustment
Pull the lever upward and slide the seat to the desired position. Then release the lever and try to move the seat back and forth to make sure that it is securely locked into place. ...

ON
This is the normal operating position after the engine is started. ...