Overview - Microphone Unit

2018 Audi A5 Quattro Prestige, 2D ConvertibleSECTION Overview - Microphone Unit
WARNING: This page does not describe the selected car, but rather 12 other vehicles, including the 2020 Audi S3, 2020 Audi RS 3, 2020 Audi A3 Quattro, 2020 Audi A3, and 2019 Audi S3. However, it is still accessible from the selected car via links, so may be relevant.

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- 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-).

Microphone Unit In Front Roof ModuleR164, 3- and 5-Door Vehicles and Sedan

Fig 1: Component Location - Microphone Unit
GWWA91-11604Courtesy of AUDI OF AMERICA, LLC
  1. Front Interior Lamp -W1-
  2. 4-Pin Connector -T4t-
  3. Interior Microphone -R74-, Black to the Digital Sound System Control Module -J525-
  4. Telephone Microphone -R38-, gray, for NZ0 to the Steuergerαt fμr Informationselektronik 1 -J794- ; for NZ3 to the Control Module for Emergency Call Module and Communication Unit -J949-

Microphone Unit In Front Roof ModuleR164, Convertible

Fig 2: Microphone Unit In Front Roof Module -R164-, Convertible
GWWA91-12276Courtesy of AUDI OF AMERICA, LLC
  1. 4-Pin Connector -T4t-
  2. Telephone Microphone -R38-, gray to the Information Electronics Control Module 1 -J794-, MMI
  3. Interior Microphone -R74-, Black to the Digital Sound System Control Module -J525-

Connector Assignment

Fig 3: Microphone Unit In Front Roof Module -R164-
GWWA91-10674Courtesy of AUDI OF AMERICA, LLC

1 - 4-Pin Connector -T4t-

  1. Microphone 1, Telephone Microphone -R38- to the Information Electronics Control Module 1 -J794-
  2. Microphone 1, Telephone Microphone -R38- to the Information Electronics Control Module 1 -J794-
  3. Microphone 2, Interior Microphone -R74- to the Digital Sound System Control Module -J525-
  4. 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 .

RENDER: 1.0x

NO RELATED

Recommended Tools & Savings

Use the Manual With the Right Hardware

Pair factory procedures with proven DIY tools so the instructions are easier to execute.

Affiliate disclosure: We may earn a commission at no extra cost to you.

When to See a Mechanic

Stop DIY work and contact a certified mechanic immediately if any of the following apply:

  • You smell fuel, burning insulation, or see smoke.
  • Brakes feel soft, pull hard to one side, or make grinding noises.
  • The engine overheats, stalls repeatedly, or misfires under load.
  • You are missing required tools, torque specs, or safe lifting equipment.
  • You are not confident in the next step or safety outcome.