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: Footrest
Courtesy of AUDI
-- Pry off the cap -3- with a small screwdriver.
-- Remove the bolt -2-.
-- Pull the footrest -1- upward in the direction of -arrow- and remove.