TV Antenna Amplifier 1 -R82-, REMOVING AND INSTALLING, SEDAN: 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:
-- Engage the antenna amplifier -1- first left and then right -arrow- into the openings and then tighten.