WARNING: This page is about a different car, the 2021 Audi S4 and 2021 Audi A4 Quattro. However, it is still accessible from the selected car via links, so may be relevant.
-- Free up the roof end strip near the rear lid seal -1- .
Fig 1: Roof End Strip
-- Unclip the roof end strip -2- using the :3409
in direction of -arrows- .