Window problems
2004 A4 1.8T 6m ultrasport
I have the same year and model. I replaced both front window regulators. These models are known for needing replacements. There is a great post on this web site showing the step by step procedure with photos. When mine went, the sound was a clunk at first and then a "grinding" sound.
Could be a matter of window adjustment, but if the door is opened up it is a good time to replace.
Hope it helps. John



