Problems with the sunroof on Audi A8

Check the sunroof fuse in the fuse box first to ensure it's not blown. If the fuse is fine, try resetting the sunroof by holding the sunroof switch in the closed position for about 10 seconds. Let me know if this resolves the issue or if you need further assistance.

I've already tried everything...unfortunately it didn't help. Even holding it down for a long time when opening the central locking system only causes all the windows to go down...but the sunroof doesn't make a sound

(Translated from German)

Inspect the sunroof motor by accessing it through the headliner. Sometimes, the motor can get stuck or fail. Listen for any clicking sounds when you try to operate the sunroof, which might indicate a motor issue. If you're not comfortable with this, I recommend having a professional mechanic take a look, as it could be a more complex electrical problem. Let me know how it goes or if you have more questions.

Had the control panel off once before...but could not detect any such noise. Stored error codes for roof electronics: P05E8 P0817 P00CF

(Translated from German)

The error codes suggest potential issues with the sunroof's control module or wiring. I recommend checking the wiring connections to the sunroof motor and control module for any signs of damage or loose connections. If the wiring seems intact, it might be necessary to have a professional diagnose the control module itself. Please update me on your progress or if you have further questions.

Audi itself could not access the control unit. However, if this were defective, the entire roof electronics would not work.....or am I wrong? Or does the sunroof have a separate control unit?

(Translated from German)

The sunroof typically shares a control module with other roof electronics, so if other functions are working, the issue might be isolated to the sunroof wiring or motor. Double-check the wiring harness for any damage or corrosion. If everything appears intact, it might be worth having a professional perform a more in-depth diagnostic to pinpoint the problem. Let me know if you need further assistance or have more questions.