The contact owns a 2015 Dodge Durango. The contact stated while driving approximately 15 MPH, the contact heard an abnormal banging sound coming from the vehicle. The contact stated that the passenger in the front passenger’s seat had been struck in the back of the head by the head rest. There was no injury reported. The contact stated there was no warning light illuminated. The contact stated that the head rest padding had separated from the head rest enclosure. The contact had taken the vehicle to a local dealer, where it was diagnosed and determined that the Dynamic Head Restraint had deployed and needed to be replaced. The vehicle was not repaired. The manufacturer was informed of the failure. The failure mileage was 107,653.