WARNING: This page is about a different car, the 2024 Audi SQ8, 2024 Audi Q8, 2023 Audi SQ8, and 2023 Audi Q8. However, it is still accessible from the selected car via links, so may be relevant.
Fig 1: Identifying Cover
Courtesy of AUDI
-- Carefully expand the cap -arrows- and lift off.
-- Carefully remove the washer nozzle -2- from the connecting tube -arrow-.