Originally Posted by Autobahn335i
Probably a wire broke in the steptronic shifter assembly. That would cause this problem. Unfortunately quite an expensive fix if you are out of warranty.
BMW only 2years warranty in China,I get my car in 07/2010.
I took it apart, you can see that there are six small iron piece, they are like antennae, but not in a plane, I do not know how to do.