2010 Jeep Liberty Owner's Manual - Page 49

48 THINGS TO KNOW BEFORE STARTING YOUR VEHICLE Seat Belt Pretensioner - If Equipped The front passenger seat belt is equipped with a pretensioning device that is designed to remove any slack from the seat belt systems in the event of a collision. These devices improve the performance of the seat belt by assuring that the belt is tight around the occupant early in a collision. Pretensioners work for all size occupants, including those in child restraints. Supplemental Rear Impact Active Head Restraints (AHR) These head restraints are passive, deployable components, and vehicles with this equipment can not be readily identified by any markings, only through visual inspection of the head restraint. The head restraint will be split in two halves, with the front half being soft foam and trim, the back half being decorative plastic. NOTE: These devices are not a substitute for proper seat How the Active Head Restraints (AHR) Work belt placement by the occupant. The seat belt must still be The Occupant Restraint Controller (ORC) determines whether the severity or type of rear impact require the worn snugly and positioned properly. Active Head Restraints (AHR) to deploy. In case of AHR The pretensioner is triggered by the Occupant Restraint deployment both driver and front passenger seat AHR's Controller (ORC). Like the airbags, the pretensioners are will be deployed. single use items. After a collision that is severe enough to deploy the airbags and pretensioners, both must be replaced.