NHTSA Complaint #11583551 — 2011 BMW 550I

Vehicle displays Transmission Malfunction & DSC and xDrive malfunction, this vehicle is available upon request for inspection. Currently been to two dealerships and all I got from the first dealership is to replace transmission at 59k mile. I purchased a used transmission same problem exist in the replacement transmission. As I was driving on highway, the transmission began displaying message above and caused the vehicle suddenly slow down without warning lights causing me to avoid an accident by pulling over to avoid being rear ended. The problem has been reproduced by dealer: tech and service advisors manager( authorized to drive) and he charge me for a tow even after I mention to him I have AAA if he needs it. Service manager stated that it may need the mechatronics unit which $4k for part but they’re unsure because they didn’t take it apart but it’s a known issue. They mention that it’s a known problem for the TCM (mechatronic valve throttle body control module to go bad). Manufacturer has not inspected vehicle. So currently it’s at BMW of Owings Mills get a second opinion.