Driving 2014 Dodge Durango when the active headrest restraint on the passenger seat activated. No accident or impact to the vehicle during incident. Resulted in passenger receiving a solid "punch" to the back of the head and neck resulting in headaches for a week. If this had happened on the driver's seat (and it still could !), I can imagine an accident is possible due to the utter surprise of the noise and being punched in the head while driving. At the time of the incident, we had no idea what had happened but have since learned that our experience is not unprecedented and there are numerous similar reports of "exploding" Dodge/Jeep headrests on NHTSA. Wanting to report incident to NHTSA before taking to dealer for repair (hopefully). No warnings of impending AHR activation and no indication of activation in UConnect after the incident. There is an active NHTSA investigation PE 19014 on this exact component failure.