Ford Mercury Villager 1997 Owner's Manual page 201

Moving the Three-Passenger Bench Seat
NOTE: When moving the three-passenger bench seat, the seat
cushion cannot be lowered unless the seat is in a
seating position. If you cannot get the seat cushion to
lower, you may have the seat in a storage position.
The three-passenger bench seat is not removable, but it can be
moved to the second-row position when the second-row captain
seats or second-row bench seat has been removed from the
vehicle.
The three-passenger bench seat slid forward
Adjustable Rear Seating
197