From 11/03/2008, The Voice Recognition System Is Part Of The Information Electronics Control Module 1 -J794-.

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Fig 1: Voice Control System Electrical Diagram (From 1 June 2009)

Courtesy of AUDI OF AMERICA, LLC

Front Information Display Control Head -J685-
- Inside the center of the instrument panel
Multimedia System Control Head -E380-
- In center console
Information Electronics Control Module 1 -J794-
- In instrument panel
- Connector assignment, from 11/03/2008, refer to MMI CONNECTOR ASSIGNMENT, FROM 11/03/2008, MAXIMUM EQUIPMENT .
- Removing and installing, refer to Information Electronics Control Module 1 -J794-, REMOVING AND INSTALLING
Data Bus On Board Diagnostic Interface -J533-
- Behind the glove compartment on the left side
Steering Column Electronics Control Module -J527-
- On steering column at steering column switches
Multifunction Steering Wheel
- Buttons, Removing and Installing, refer to MULTIFUNCTION BUTTONS, REMOVING AND INSTALLING, THROUGH MY 2011 .
Digital Sound System Control Module -J525-
- Behind the luggage compartment left side trim
Radio -R-
- Behind the luggage compartment left side trim
TV Tuner -R78-
- Behind the luggage compartment left side trim
CD Changer -R41-
- In the glove compartment
Microphone Unit in Front Roof Module -R164-
- Overview, refer to OVERVIEW - MICROPHONE UNIT .

Fault Finding Is Performed via "Guided Fault Finding " On The Vehicle Diagnostic Tester.