Overview - Microphone Unit

The Microphone Unit In Front Roof Module -R164- is installed in the Front Interior Lamp -W1-. Up to three microphones may be installed, depending on the equipment.

One microphone (Interior Microphone -R74-) is connected directly to the Digital Sound System Control Module -J525-. The other microphone (Telephone Microphone -R38-) is connected to the Radio -R- /Information Electronics Control Module 1 -J794-.

For NZ3, the Telephone Microphone -R38- is connected to the Control Module for Emergency Call Module and Communication Unit -J949- and is >>looped through<< to the Radio -R- /Information Electronics Control Module 1 -J794-.

The Microphone Unit in Front Roof Module -R164- located in the Front Interior Lamp -W1- can be replaced only as a complete unit. It is not possible to replace individual microphones (Interior Microphone -R74- or Telephone Microphone -R38-).

Fig 1: Component Location - Microphone Unit

Courtesy of AUDI OF AMERICA, LLC

1. Front Interior Lamp -W1-
2. 4-Pin Connector -T4bg-
3. Interior Microphone -R74-, Black to the Digital Sound System Control Module -J525-
4. Telephone Microphone -R38-, gray, for NZ0 to the Radio -R- /Information Electronics Control Module 1 -J794- ; for NZ3 to the Control Module for Emergency Call Module and Communication Unit -J949-

Microphone Unit in Front Roof Module -R164-, removing and installing. Refer to Microphone Unit in Front Roof Module -R164-, REMOVING AND INSTALLING .