Bumper Cover Trim Molding, Removing And Installing, A4 Lines, A5 Lines And A4 ALLROAD From Product Improvement: Installing
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.
Install in reverse order of removal and note the following:
-- Place the trim molding on the lower section of the bumper cover and push in. The catches must fully engage when doing this.