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.
Remove housing cover for high beam from headlight housing
Unplug connector -3- at main beam bulb.
Disengage wire clip -2- and take bulb -1- out of housing.
Fig 1: Unplugging Connector At Main Beam Bulb & Removing Halogen Bulb From Housing