Improvised Tools
WARNING: This page does not describe the selected car, but rather 9 other vehicles, including the 2015 Audi S7, 2015 Audi RS 7, 2015 Audi A7 Quattro, 2014 Audi S7, and 2014 Audi RS 7. 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)