One problem related to air bag on-off switch has been reported for the 2005 BMW 325. The most recently reported issues are listed below.
My wife parked the car in the doctors office parking lot. It was 58 degrees and raining. She left our family pet in the car. When she came out of the doctors office she saw that the car was full of smoke. The key fob would not open the locks. The doors would not open. The glass in the windows would not break under her strength even with a glass hammer that someone managed to retrieve for her. She finally remembered the key and was able to open the drivers side door. Our dog was lifeless, fire and rescue tried to revive her to no avail. The fire apparently started some where around the headlight switch or behind the vent where the cables for the door panel airbag pass. It caused the door airbag and the steering wheel airbag to deploy. The fire reached the roof panel before apparently self extinguishing due to lack of oxygen. I arrived about an hour later. Although the loss of my dog is a tragedy the really horrible part is finding that I could not open the passenger doors. The key fob will not open the locks. I climbed across the drivers seat and could not open the passenger side door from the inside. I reached back and could not open the drivers side rear door from the inside either. Is it possible that there is a defect in which passengers can not extract themselves from a burning automobile? with all of the safety features of modern automobiles was egress overlooked? I certainly hope that the NHTSA looks into this and ensures that it isn't children that are trapped in the future.