Driver side window issue

[Wimarth]

Hi

I have an 08 e70. About a year ago I noticed my driver side window control wasn't working during one trip. It came back the next time I drove the car and was for a while until Jan when the fault occurred more regularly. I'm now at a point where I can't control windows or mirrors from the driver side control.

All of the other window switches work and if I hold unlock/lock on key all windows open and close. The driver switch is getting power as it is illuminated, and today I installed a "new" used switch I bought off ebay. The problem persists.

Does anyone have an idea what the problem may be??

Thanks

Mark

[X5Sport]

Check the wiring connectors for water intrusion and corrosion would be my first check.  A bit of Duck Oil or WD40 will help with the water rejection.