Bolts And Nuts

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.

Fig 1: Identifying Nut & Bolt

Courtesy of AUDI OF AMERICA, LLC

Loosen and tighten the bolts and nuts from the covers and housings diagonally.
Do not tilt, but rather loosen and tighten especially sensitive parts diagonally and in stages, for example servo motor with control module.
Tightening specifications for non-lubricated bolts and nuts are given.
Always replace self-locking nuts and bolts.
Always replace the bolts and nuts, which are tightened with an additional turn.