Ford Mercury Villager 1997 Owner's Manual page 202

After moving the third-row seat, be sure to latch the seat
in a passenger seating position. Improper location of
the seat will prevent correct use of the safety belts and will
increase the risk of severe injury in an accident. After
sliding the seat, check that both sides of the seat are locked
securely by attempting to move each side of the seat
forward and backward. This must be done before the
vehicle is put into motion in order to prevent unintended
movement of the seat and potential passenger injuries.
NOTE: Before rearranging the seats, remove any floor mats
that might be in the way.
The three-passenger seat can be stored behind the second-row
seat(s) to provide extra cargo space in the rear of the vehicle.
With the second row seat(s) removed, the three-passenger bench
seat can be moved all the way forward, just behind the front
seats for more room in the cargo area.
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