Left Rear Door Control Module -J388- AND Right Rear Door Control Module -J389-, REMOVING AND INSTALLING

-- Push the release downward and disconnect the connectors.

Fig 1: Disengaging Door Control Module -1-

Courtesy of AUDI OF AMERICA, LLC

-- Press the catch in direction of -arrow- and disengage the door control module -1- from the door shell.

Installing 

-- Installation in reverse order of removal making sure the retainer locks into the inner door panel.