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Has anyone figured out this problem? Our 2014 335i is currently with BMW service for the 3rd time within a month for the "Drivetrain malfunction".
The service adviser has been good at keeping us in the loop with updates. So far they have replaced the Vanos units, adjusted the Vanos bolts, checked the engine timing, checked camshafts, camshaft journals. They said the next options per BMW is to replace the DME or cylinder head. This car only has 9k mile on it! I'm not sure how comfortable I feel with having the cylinder head torn apart and replaced at such low mileage.
Has anyone gone the Lemon law route?
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