Ford Expedition Owner's Manual page 139

Properly adjust the head restraint so that the top of the head restraint is
even with the top of your head and positioned as close as possible to the
back of your head. For occupants of extremely tall stature, adjust the
head restraint to its full up position.
WARNING: To minimize the risk of neck injury in the event of a
crash, head restraints must be installed properly.
Adjusting the front manual seat (if equipped)
WARNING: Never adjust the driver's seat or seatback when the
vehicle is moving.
WARNING: Do not pile cargo higher than the seatbacks to
reduce the risk of injuring people in a collision or sudden stop.
Lift handle to move seat forward or
backward.
2012 Expedition (exd)
Owners Guide, 1st Printing
USA (fus)
Seating and Safety Restraints
139