Hi,
I am new to this site and only owned a crossfire a few weeks. Bought a 53 plate coupe really cheap in need of work for the MOT. Which I did myself as a mechanic.

The left window will not go up. The regulator and cable are fine and work. I have no feed coming down the wiring when the up switch is pressed. I have swapped the switches over and still no joy. I cannot find a broken wire in the door etc.
I have heard there are BCM issues. Has anyone come across this and got any information please on what it could be?
Any help would greatly be appreciated. Not great electrically.

Thanks.