Electrical fault(s)

[Gazzie55]

Hi, I am a new member and proud owner of a 2009 xj Sovereign Jag (2.7 TDVI)

I have a long standing electrical fault which effects the windows, overtaking wing mirrors, release of parking brake and door locking. Drivers window will only go down in 50mm intervals and you have to pull the button up 8 times to start it moving up again. All very strange! I think the issues are linked maybe to the door module, but having replaced the one in the driver's door, the problems remain. I was wondering if anyone has had similar issues, in the hope that you might help me get closer to a solution.