Ball Joint Checking
WARNING: This page is about a different car, the 2004 Audi S4, 2004 Audi A4, 2003 Audi A4, and 2002 Audi A4. However, it is still accessible from the selected car via links, so may be relevant.
Raise and support vehicle. Inspect ball joints for damaged rubber boots and vertical ball joint play. Procedure and wear tolerance are not available from manufacturer. When servicing ball joints, mark ball joint mounting position before removing to avoid changing camber setting.