Emergency Call Module Antenna 2 -R322-, REMOVING AND INSTALLING, SEDAN/AVANT, EXCLUDING RUSSIA, THROUGH MY 2018 AND FROM MY 2019, WITHOUT CONNECT PLUS (IV0): 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.