I have 2011 X6 M. While driving on the freeway, after reducing the speed and then trying to accelerate, the car stopped shifting, started slowing down and eventually came to complete stop. In order to resolve the problem I had to turn off the engine, give it a few minutes and then restart it again. This happened to me on two occasions and both times I was getting some warning message about transmission. This is really scary because second time it happened to my daughter, who's 18 years old, she got stuck in the speediest (left) lane of the freeway 280 South on the way to Palo Alto. Fortunately she knew what to do to resolve the problem; luckily she was with me when it happened to me first time. I'm taking my car to the BMW Service in SF and keep you posted with the progress.
Last edited by ltbmwdriver; 10-19-2012 at 08:22 AM.