[Snowrider]

This pas Saturday received a drivetrain malfunction error / Dsc xdrive error and seems as if there is loss of power to back wheels. Car shakes on turns. 2011 535i xdrive Msport. I had a Jb in the car which I removed but upon removal tab broke on one of the map sensors. Should I be worried upon bringing car to dealership? I know a few people have had this issue, I am more worried of the tab on the continental map sensor though. Thoughts would be helpful.

Thx.