It happened to me the day after I got the Dinan Tune installed. I had hit a good size pot hole and it cam on. I thought that might have caused it. I got home turned it off and restarted it and the message was gone was gone. That was back in September it came back on last night right as I was pulling into the garage. It won't go off this time. It also came up with the Chassis Malfunction notification at the same time. Time to take it in and see what the hell is going on.