I have a friend a work with a '01 M5 and it's experiencing dead pixels on his instrument cluster. The dealer said it's a common problem and that they could get him a new cluster but they said after they install a new instrument cluster the car will be reset to 0 mileage and they will put a sticker on the car to document the cluster replacement. This sound unacceptable to my friend since this could kill the resale value of the car. I always thought that the mileage info was stored in the computer and the cluster was just a display. Is this true about the mileage reset?