My Golf 4 TDI's driver side electric window stopped working recently after it sounded as if something broke inside. I had to manually push the window up and it almost feels as if it loose, sometimes it would slide down a bit. The motor still runs but the window does not move.

A number of times before the incident, when opened the window, it sounded as if the motor slowed down (almost as if there's some obstruction) for a split second whereafter it went back to normal speed again. This "slow down" happened when the window was around half open.

A while back (on a cold morning) there was frost on the car and I remember I tried to open the window but it was stuck. I think the above "symptons" started shortly after that.

Short and sweet is that I need it fixed. I'm a bit reluctant to take it to a dealer especially after the 4 digit bill I recently got for sorting the clutch. What I want to do is to open it up and see what going on inside there. I havn't fiddled with this sort of thing before but one should be able to figure it out?

Anyone had a similar problem before? Any tips and suggestions on how to approach this?