I started getting yellow "Drivetrain Malfunction: Drive Moderately" alerts on my 328i four weeks after purchase. Imagine my glee. Mine came on upon cranking, and the car went into limp mode temporarily--for about a mile and fortunately on a city street--before driving off as usual. From looking at other threads and forums, this problem is unfortunately somewhat common and not easily corrected.
The dealership has had the car for >2 weeks now. They are saying the VANOS unit will be replaced. At least they gave me a 2013 328i loaner, which has yet to act up. Maybe I can negotiate a trade.
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