EG9 K20A3 3/29/2012I have this sneaky suspicion that you need to replace your module. The control unit part number is 215 820 27 26. This should be located under the drivers front seat. I would start by checking fuse 13 for the driver's window, but most likely it will need a new door control module. It is a common thing when all the functions of that door go out. The module is actually part of the whole seat adjustment switch. If this is replaced in most cases the new one has to be set up and or coded to operate properly in your vehicle by a dealer using their sds machine.Usually this can be ordered from a dealer on an over night ticket so you can receive it tomorrow,they might be able to have it shipped to you as well.