As I was sitting in a parking lot today o heard this loud boom that sounded as if I had been rear ended and felt what seemed to be a blow to my head. I looked around and there were no cars around and got out of the vehicle to see what happened and it was the headrest that burst open. It ended up hurting my head and neck and could have potentially caused an accident had this happened while I was driving. There were no other signs of something happening and no warning lights. Dealer was not notified.