Nothing too serious, but hopefully it's something simple. I have a 00 M5 and I just realized this morning that the auto (one touch) down and up is not working on my driver's side front window. It works fine on the passenger side, but not the driver's side. The window will still go up or down if I press and hold the switch, but the one touch does not work. Is there a way to reset the system or some other easy fix or do I need to schedule a visit to the dealer?