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 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 Information Electronics Control Module 1 -J794-.

The Microphone Unit in Front Roof Module -R164- 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-).

Microphone Unit In Front Roof Module R164, 3- and 5-door vehicles and Sedan

Fig 1: Component Location - Microphone Unit

Courtesy of AUDI OF AMERICA, LLC

Front Interior Lamp -W1-
4-Pin Connector -T4t-
Interior Microphone -R74- (black) to Digital Sound System Control Module -J525-
Telephone Microphone -R38-, gray, for NZ0 to the 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, Convertible

Fig 2: Microphone Unit In Front Roof Module -R164-, Convertible

Courtesy of AUDI OF AMERICA, LLC

4-Pin Connector -T4t-
Telephone Microphone -R38-, gray to the Information Electronics Control Module 1 -J794-, MMI
Interior Microphone -R74- (black) to Digital Sound System Control Module -J525-

Connector Assignment

Fig 3: Microphone Unit In Front Roof Module -R164-

Courtesy of AUDI OF AMERICA, LLC

1 - 4-Pin Connector -T4t-

Microphone 1, Telephone Microphone -R38- to the Information Electronics Control Module 2 -J794- /Control Module for Emergency Call Module and Communication Unit -J949-
Microphone 1, Telephone Microphone -R38- to the Information Electronics Control Module 2 -J794- /Control Module for Emergency Call Module and Communication Unit -J949-
Microphone 2, Interior Microphone -R74- to the Digital Sound System Control Module -J525-
Microphone 2, Interior Microphone -R74- to the Digital Sound System Control Module -J525-

2 - Microphone 1, Telephone Microphone -R38-

3 - Microphone 2, Interior Microphone -R74-

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