Improvised Tools
WARNING: This page is about a different car, the 2021 Audi S4 and 2021 Audi A4 Quattro. However, it is still accessible from the selected car via links, so may be relevant.
Charging Hose with Connection for Workshop Compressed-Air System
A - Charging hose 5/8" - 18 UNF** (version with large inner diameter)
B - Connection for workshop compressed-air system ** (always use filter)