The contact owns a 2011 BMW 535i. The contact stated that when pressing the accelerator pedal to drive from being idle at a red light, the driver's side air bag deployed out of the steering wheel without impact. The contact sustained burns to the left arm, right cheek, and chest area. The contact had suffered stomach issues due to inhaling the dust and fumes from the air bag. Medical attention was required. The vehicle was towed by AAA to an independent mechanic, where it was diagnosed that the horn module needed to be replaced; however, the part was not available. The vehicle was towed to another independent mechanic, where the vehicle remained for a month, and Liberty Mutual was to retrieve the vehicle and investigate the failure. The contact stated that the vehicle was not investigated to her knowledge, and the vehicle was returned without being repaired. The manufacturer was not informed of the failure. The failure mileage was approximately 132,000.