I believe there is a procedure for taking off the door panel on
audiworld.com, but if i recall, there is a small screw on either side of
the panel at the top.  I don't recall any other screws, but i would
check.  Once the screws are removed the panel lifts straight up off of
clips that secure it.  There will be electrical connectors and the door
handle mechinism preventing you from moving it very much.  If your
problem is the same as mine, you don't even need to pull the panel.
Look at the back edge, inside where the glass slides (you may need a
flashlight).  Look for a worn groove.  This was my problem.  The groove
allowed the glass to rotate toward the rear and act as a locking cam.
The motor would think something was caught and stop trying.  The window
would go up if i were pulling at the top of it toward the inside of the
car (or pushing from the outside).  This kept the glass out of the
groove that had worn.  An obvious problem for my fingers at the top.  I
used an excess length of 1-inch diameter "poly-pipe" used for lawn
irrigation systems and cut a ~3mm width (with a dremel rotary tool) long
enough to run a little bit more than the length of glass.  I set it into
the groove and it has stayed there about 6 months now by friction alone
and the window works fine.  The pipe i used was black and set deep
enough that it isn't even visible unless the window is down and you go
looking deep into the groove.  I hope this is your problem because the
fix is easy and more importantly CHEAP.

Stu

OK, that could be a bit lengthy. I'll try. There is a manual from H.R.
Etzold in german "So wird's gemacht" for the A6 which describes it.

Step one might not really be neccessary. In my book it just comes
before step 2, but if I look at the drawings, the trim really might
come off without step 1 as well. Possibly you can not place it aside
then as the switch assy will be connected to the door, but for a first
look this could be ok.

1.) Remove the electric window switches:

there is a small hole on the internal door handle on the lower front
end of the handle under the electric switch assy. You have to insert a
flathead screwdriver into that hole until you feel resistance. The
screwdriver now is sitting against a plastic nose which snapped the
complete switch assy into place.

You have to pry the tip of the screwdriver towards the back of the car
now. This will press the plastic nose backwards and at the same time
you need to press the screwdriver carefully upwards. This pushes the
complete assy upwards and out.

      |
      |door handle
     _|_
    |  / nose      
    |I
     I
     I-- screwdriver

      |
      |door handle
   ___|
  |  / nose      
  |I
   I
   I-- screwdriver

Disconnect the assembly from the harness, but be careful about the
locking mechanisms of the connector.

2.)  Remove the trim

High up on the door trim, facing to the front and the back of the car
there are two screws. One facing each direction. Unscrew them. Lift
the trim some 20 cm up unhooking it at the top. There are several
plastic supports at the lower side of the door holding the door in
place at that edge. I guess one has to be careful not to break them.

---

Please note, that I never did that myself but quote from a DIY style
book. It does not look that difficult, I just dont have first hand
experience with it.

Regards

Wolfgang