Jeep 2009 Commander - Manual (Page 126)

Head Restraints
Head restraints can reduce the risk of whiplash injury in
the event of impact from the rear. Adjustable head
restraints should be adjusted so that the upper edge is as
high as practical. The head restraints have a locking
button which must be pushed in to lower the head
restraint to all positions. The restraints may be raised
without pushing in the button.
Adjustable Head Restraints
124 UNDERSTANDING THE FEATURES OF YOUR VEHICLE