7 Series - F01 / F02 (2009 - 2015)
I took my car to the dealership for the dreaded Drivetrain malfunction and I had a loud rattle under my car that needed to be diagnosed. The rattle was a bolt that was loose underneath my car which I attributed to not being tightened when they replaced engine a few months ago. found out that I need this sensor that is located behind the manifold and you need to remove a good portion of stuff to get to and its labor intensive. Part is a 174.00 and total bill will be 762.00 to fix. The mechanic said not to worry too much and I can take my time fixing it, I will just notice a difference in my gas mileage.