The contact owns a 2019 Dodge Durango. The contact stated while driving at 55 MPH, the headrest air bag inadvertently deployed and hit her on the back of the head. There were no warning lights illuminated. The contact stated she continued to drive the vehicle and made a stop when she exited the highway. The contact sustained whiplash but did not seek medical assistance. The vehicle was not diagnosed nor repaired by an independent mechanic or dealer. The dealer and the manufacturer were not notified of the failure. The approximate failure mileage was 60,000.