I have now had the problem a few times where on auto close the window would then drop down a few inches as if there is something trapped inside the seal. The end result each time was I had to reset it and then all would be ok.
After that problem went I found sometimes that after the window had raised fully I could hear a clicking coming from the motor area as if it was trying to push the window fully up but something was stopping it. Only once in the last month has the window lowered on it's own though.
Today I drove my car and fully auto opened the window. I drove 2 miles and then when I pressed to close the auto feature had gone so I had to reset again.
I plan to pay a visit to Bedford Audi when I'm in the UK next month (I tried Audi here but there is a bit of a language barrier and the tech I saw didn't really know what to do) but I wondered if anyone else had similar problems and how they got it sorted in the end.
Thanks in advance