Mercury Grand Marquis 1998 Owner's Manual page 60

Do not pile cargo higher than the seatbacks to avoid injuring
people in a collision or sudden stop.
Always drive and ride with your seatback upright and the lap
belt snug and low across the hips.
Press the control to recline the
seatback forward or backward. (if
equipped)
Press to move the seat forward or
backward.
Press to move the front portion of
the seat cushion up or down.
Seating and safety restraints
59