WARNING: This page is about a different car, the 2005 Audi A4, 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.
Special tools and equipment
Fig 1: VW 385/32 End Measuring Plate
Courtesy of VOLKSWAGEN UNITED STATES, INC.
VW 385/32 End measuring plate
Fig 2: 3116 Spring Pin
Courtesy of VOLKSWAGEN UNITED STATES, INC.
3116 Spring pin
Digital depth gauge accurate to within at least 5/100 mm.