Metal Valve, Removing And Installing, Version 1: Removing
WARNING: This page is about a different car, the 2023 Audi SQ8, 2023 Audi RS Q8, and 2023 Audi Q8. However, it is still accessible from the selected car via links, so may be relevant.
-- Remove the tire pressure monitoring sensor.
-- Remove the union nut and the metal valve from the disc wheel.