Audi TT Power Windows Failure: Multiple System Shutdown

My 2004 Audi A4 2.0T had nearly identical power window issues last month. After inspecting the window system, the problem was traced to a failed master power window switch in the driver door panel. The automotive repair showed all windows were affected because the master control unit manages the entire power window system. The main symptoms matched yours, complete failure of all windows and error codes. Initially suspected the window motor or window track components, but diagnostic testing confirmed it was the switch module. This is actually a common issue in these Audi models due to wear on the internal contacts. The repair required removing the door panel and replacing the master switch assembly. While less serious than a failed window motor or regulator issue, it still needed professional attention since it involves working with the cars electrical system. The fix restored full functionality to all power windows. Testing the switch is straightforward, a qualified technician can quickly determine if its receiving proper power and sending correct signals. Would recommend having this checked first before exploring more complex window mechanism repairs.

Thanks for sharing that experience. It is really helpful since my TT shows the exact same symptoms with the power windows. I ended up getting it diagnosed last week and you were spot on, the window control module was shot. The regulator motor and window mechanism all checked out fine, surprisingly. Getting the master switch replaced next week and hoping this solves it completely. Wanted to ask, do you remember roughly how much you paid for the automotive repair? Also curious if you had any other window issues pop up since getting it fixed?

After fixing my faulty window regulator, I can report it solved the issue completely. The power window switch replacement cost me 200 Euro total, including labor and parts. This was actually less than expected for an Audi repair. Since the automotive repair six months ago, all windows have worked flawlessly. No issues with the window control or any other window-related problems. The car window system functions like new now. The mechanic explained the master switch typically lasts many years once replaced, so you likely wont face this problem again. Just make sure your repair shop uses genuine parts for the window control unit, it makes a difference in longevity. While aftermarket options exist, they often dont hold up as well in these models.

Just got back from the mechanic and wanted to share an update. The window control module replacement went smoothly, total cost was 180 Euro which felt reasonable. The automotive repair shop I found specialized in German cars and they really knew their stuff. They showed me the old master switch and explained how the internal contacts had completely worn out. Interestingly, they mentioned this is a fairly common issue once these cars hit the 15-year mark. All power windows are working perfectly now. Really glad I didn't jump to replacing the window motor or window regulator first. The new switch feels much more solid than the old one. They used genuine parts and gave a 12-month warranty on the work. Honestly relieved it turned out to be a straightforward fix. No more worrying about being stuck with windows that won't budge.