My local Audi dealer emailed me three pages from the manual that describe how to remove the panels and disassemble the window frame. See attachment. What I found was the plastic clip that connects the wire to the window is broken. It's a $5 part but Audi don't sell it, they insist that we purchase the entire regulator assembly for $127 to $157. I think I'm going to purchase a $21 repair kit (plus $6 shipping) from Idealautoteile in Turkey. In the meantime I'm driving around with the window firmly clamped up and the motor disconnected.
Here's the update. I ordered the repair kit from Idealautoteile in Turkey and it installed fine. The wire system is different, two separate wires rather than a single loop. This allows for buffer springs at the clip (springs included). There is also a replacement capstan in the event that the original is chewed up. Mine was fine. I don't know yet if the clip is going to hold up any better than the original (nearly 5 years) but at this stage I would recommend it. Don't expect any communication from Idealautoteile ... my enquiries went unanswered, the part just turned up 10 days later as promised.
Last edited by britinindy; 10-03-2009 at 08:22 AM.