Traffic Data Antenna, Removing And Installing: Notes
WARNING: This page does not describe the selected car, but rather 9 other vehicles, including the 2018 Audi S6, 2018 Audi A6 Quattro, 2018 Audi A6, 2017 Audi S6, and 2017 Audi A6 Quattro. However, it is still accessible from the selected car via links, so may be relevant.
The Traffic Data Antenna -R173- is located at the top of the windshield on the left side.