Tail light in rear lid, removing and installing: Removing

Open carpet trim in rear lid on appropriate side.
Turn individual bulb sockets -1-, -2-, -3- counter clockwise and remove.

Fig 1: Removing Bulb Sockets For Tail Light In Rear Lid
Courtesy of AUDI OF AMERICA, INC.

NOTE: Illustration depicts the left tail light in the rear lid. Rear lid lock must also be removed for right rear lid tail light.

See REAR LID LOCK CYLINDER, REMOVING AND INSTALLING .
Remove the four mounting nuts and remove housing.
Remove four mounting nuts (size in mm: 8) (arrows) and remove housing.