Jeep 2014 Grand Cherokee Owner's Manual page 63

How The Active Head Restraints (AHR) Work
The Occupant Restraint Controller (ORC) determines
whether the severity, or type of rear impact will require
the Active Head Restraints (AHR) to deploy. If a rear
impact requires deployment, both the driver and front
passenger seat AHRs will be deployed.
When AHRs deploy during a rear impact, the front half
of the head restraint extends forward to minimize the gap
between the back of the occupant's head and the AHR.
This system is designed to help prevent or reduce the
extent of injuries to the driver and front passenger in
certain types of rear impacts.
NOTE: The Active Head Restraints (AHR) may or may
not deploy in the event of a front or side impact.
However if during a front impact, a secondary rear
impact occurs, the AHR may deploy based on the sever-
ity and type of the impact.
THINGS TO KNOW BEFORE STARTING YOUR VEHICLE 61
Active Head Restraint (AHR) Components
1 — Head Restraint Front Half
(Soft Foam and Trim)
2 — Seatback
3 — Head Restraint Back Half
(Decorative Plastic Rear Cover)
4 — Head Restraint Guide
Tubes
2