Hello fellow E53 owners ....Summer's here!!!

I've got a 2001 X5-E53 and my rear driver side passenger window is not functioning.

I rolled it down one day, and when in the process of raising it...the window stopped midway. After a couple of flicks on the switch ...I opened the door and gave it a very firm-hard close and the window rolled completely up.

The next day when I tried to lower it... as I assumed it didn't work so I ordered a new regulator with the motor and also a new window door switch. before I began uninstalling the old regulator.... I plugged in the new one and the new one didn't operate.

I then tested the new one on the passenger rear door and it worked fine. I also swapped the old window switch over to the rear passenger side and saw it worked properly.

Any ideas about what could be the issue with the rear driver passenger door? I don't wont to uninstall the old regulator if that's not the problem....could it be something else?

Your feedback is greatly appreciated guys

thanks