Dodge 2008 PM Caliber - Manual (Page 112)

Adjustable Head Restraints
Head restraints can reduce the risk of whiplash injury in
the event of impact from the rear. Pull up or push down
on the head restraints so that the upper edge is as high as
practical. To raise the head restraint, pull up on the head
restraint. To lower the head restraint, depress the button
and push down on the head restraint.
Head Restraint Adjustment
110 UNDERSTANDING THE FEATURES OF YOUR VEHICLE