Telematics Emergency Battery -A16-, REMOVING AND INSTALLING, WITH CONNECT PLUS (IV1 THROUGH IV9 OR JE0 THROUGH JE6), FROM MY 2021: Installing
WARNING: This page is about a different car, the 2024 Audi S6 and 2024 Audi A6 Quattro. However, it is still accessible from the selected car via links, so may be relevant.
Install in reverse order of removal.