The OBC that measures mileage on my 2009 335I (and then uses that to measure miles to empty) has gone crazy. Is there a way of resetting, or is it a problem that must be fixed at BMW repair.
All of a sudden, the display that indicates the mileage I am getting as well as the miles to
empty has gone crazy - says I am getting 75 MPG. Is there a way of resetting?