Hello, looking an advise. My 316i prompted drivetrain warning when RPM Over than 3000 especially in sport mode. However message disappeared when i restarted the car. It repeatedly happen now...get diagnose by several workshop but not issue found.
Since the car is still under warranty, send it back to the SC and tell them of this issue. Ask, or better still, demand for a thorough check/diagnosis. Yes its gonna be difficult, since they will have to emulate the exact conditions of the car then it happens, thats the hard part. Maybe a software update would solve gremlins in the system?