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The error for me went away after letting the vehicle cool down.
The 1st time it happened to me the car wouldn't start even though the engine was cranking. After about 20 minutes the engine would start but I had the engine malfunction error. After another 30 minutes of cooling that error message went and it was back to normal.
The 2nd and 3rd times it happened I just got the Drivetrain Malfunction error but I was able to start and drive the vehicle with a very restricted performance.
Here is the latest update from the dealer: "I have called our two reps with BMW Canada to get an update as to where we are at. The PDM module that has been sent out as an update needs to be tested in cold climate similar to the weather conditions we had when it failed here. They have a team of engineers that were in Winnipeg and they have developed an updated module and they are flying to Ontario for testing on Monday."
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