I am a newer of M5 who was really scaled of my M5. Last night, when i started my car and set the gear on D, the 5 did not go forward but reversely no matter how I pedaled the foot break. And the foot break was totally out of contral and seemed to be some kind of loosen I couldn't feel the air power of the foot brake at all. At last I had to pull on my parking break to stop the reverse of the car. When I turn off the all the electricity and restarted my car. It worked normally again. Could anybody please tell me what's wrong with my gear , break or the system of my m5. Thanks a lot in advance.[:o]

I can't help much more than tell you to get it back to the dealers IMMEDIATELY. This sounds pretty scary, and dangerous.

I'd contact the dealer and have them pick it up until you know what is going on. Don't drive it.