Ford Windstar Owner's Manual page 155

Your Windstar tip slide seat has been equipped with a lock-out
feature which prevents the seatback from returning to its
original position until the seat latches in the tracks. If the seat
has not latched check under the seat and in the tracks for
possible obstructions.
DO NOT DRIVE THE VEHICLE WITH THE TIP SLIDE
SEAT UNLATCHED.
To move the seat forward or backward:
Find the adjustment bar underneath the front part of the
1.
seat.
Lift the bar to unlatch the seat.
2.
Adjusting the Head Restraints (LX Only)
Your vehicle's bucket seats are equipped with head restraints
which are vertically adjustable. The purpose of these restraints is
to limit head motion in the event of a rear collision.
To adjust the head restraints up, simply pull up on them. To
adjust them back downward, push down. The head restraints
will remain stationary in whatever position they are placed.
Head restraint adjustment
NOTE: On GL models, front bucket seats are designed with
integral headrests.
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