Left Antenna Module

-- Switch off all electrical consumers.

-- Remove the key.

Removing 

-- Remove the rear lid lower trim panel. Refer to Removal and Installation .

-- Disconnect all the connectors from the left antenna module -R108-.

-- Pay attention to the connector leading to the rear window -arrow-.

Fig 1: Identifying Rear Window, Nut, And Screws

Courtesy of AUDI OF AMERICA, LLC

-- Loosen the nut -3- (6 Nm).

-- Remove the screws -1- and -2- (6 Nm).

-- Remove the left antenna module from the rear lid.

Installing 

-- Install in reverse order of removal.

-- Pay attention to the connector leading to the rear window -arrow-.

Fig 2: Identifying Rear Window, Nut, And Screws

Courtesy of AUDI OF AMERICA, LLC