Fuel Filler Door Unit, Removing And Installing: 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:
-- Insert the hinge side of the fuel filler door unit first into the fuel filler door opening and push it in until it clicks into place.