What component or system failed or malfunctioned, and is it available for inspection upon request? The passenger Active Head Restraints (AHR) deployed for no reason. I was sitting in in the passenger side seat talking to my wife, in the driveway, when the AHR deployed without cause. The head restraint struck me on the back left side of head with force. My neck is starting to stiffen up. Yes it is available for inspection. I will send pictures. How was your safety or the safety of others put at risk? The force generated during the deployment of an Active Head Restraint (AHR) system is significant, I know because I was hit on the back of the my head thankfully I was not driving. My safety concern is two fold, one injury from AHR deploying inadvertently and elderly person might be at more risk for this type of injury. Two, AHR deploys striking driver while the car is in motion causing an accident. Also, this might be related to an open investigation by the National Highway Traffic Safety Administration (NHTSA Action Number: PE19014) Has the problem been reproduced or confirmed by a dealer or independent service center? No Has the vehicle or component been inspected by the manufacturer, police, insurance representatives or others? No Were there any warning lamps, messages or other symptoms of the problem prior to the failure, and when did they first appear? No