Audi A4 Owners & Service Manuals

Audi A4: Component Location Overview - Telephone System

Audi A4 (B9) 2016-2025 Service Manual / Electrical System / Communication / Telephone System / Component Location Overview - Telephone System

Component Location Overview - Telephone System

1 - Center Console Storage Compartment

  • Removing and installing. Refer to → Body Interior; Rep. Gr.68; Center Console; Overview - Center Console.

2 - Telephone Baseplate -R126-

  • Removing and installing. Refer to → Chapter "Telephone Baseplate -R126-, Removing and Installing".

3 - Bracket

  • Nut tightening specification: 3 Nm

4 - Cellular Telephone Amplifier -R86-

  • Connector assignment. Refer to → Wiring diagrams, Troubleshooting & Component locations.
  • Removing and installing. Refer to → Chapter "Cellular Telephone Amplifier -R86-, Removing and Installing".

5 - Front Interior Lamp -W1-

  • Removing and installing. Refer to → Electrical Equipment; Rep. Gr.96; Controls; Front Interior/Reading Lamp, Removing and Installing.

6 - Right Front Microphone -R141-

  • 4-Pin Connector -T4-, black
  • Removing and installing. Refer to → Chapter "Microphone Unit in Front Roof Module -R164-, Removing and Installing".

7 - 4-Pin Connector -T4dc-, Black

8 - Interior Microphone -R74-

  • Removing and installing. Refer to → Chapter "Microphone Unit in Front Roof Module -R164-, Removing and Installing".

9 - Left Front Microphone -R140-

  • 4-Pin Connector -T4-, red
  • Removing and installing. Refer to → Chapter "Microphone Unit in Front Roof Module -R164-, Removing and Installing".

10 - Information Electronics Control Module 1 -J794-

  • Connector assignment. Refer to → Wiring diagrams, Troubleshooting & Component locations.
  • Removing and installing. Refer to → Chapter "Information Electronics Control Module 1 -J794-, Removing and Installing".

Overview - Microphone Unit

One microphone (Interior Microphone -R74-) is connected directly to the Digital Sound System Control Module -J525-. The other microphones are connected to the Information Electronics Control Module 1 -J794-.

For IW3 the Left Front Microphone -R140- is connected with the Data Bus on Board Diagnostic Interface -J533- and for 9ZE are "looped through" on the Information Electronics Control Module 1 -J794-.

Overview - Microphone Unit

1 - Front Interior Lamp -W1-

  • Removing and installing. Refer to → Electrical Equipment; Rep. Gr.96; Controls; Front Interior/Reading Lamp, Removing and Installing.

2 - 4-Pin Connector -T4dc-, Black

3 - Interior Microphone -R74-

  • Removing and installing. Refer to → Chapter "Microphone Unit in Front Roof Module -R164-, Removing and Installing".

4 - Right Front Microphone -R141-

  • 4-Pin Connector -T4-, black
  • Removing and installing. Refer to → Chapter "Microphone Unit in Front Roof Module -R164-, Removing and Installing".

5 - Left Front Microphone -R140-

  • 4-Pin Connector -T4-, red
  • Removing and installing. Refer to → Chapter "Microphone Unit in Front Roof Module -R164-, Removing and Installing".

Microphone Unit in Front Roof Module -R164-, removing and installing. Refer to → Chapter "Microphone Unit in Front Roof Module -R164-, Removing and Installing".

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     Microphone Unit in Front Roof Module -R164-, Removing and Installing

    The Microphone Unit in Front Roof Module -R164- in the Front Interior Lamp -W1- is comprised of the Interior Microphone -R74-, the Left Front Microphone -R140- and the Right Front Microphone -R141-

     Navigation System

     Overview - Navigation System

    Overview - Navigation System, MMI Navigation, 7UF 7UF - Navigation Information Electronics Control Module 1 -J794- with integrated CD player/SD memory card reader/navigation system in the glove comp

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     Battery Charger -VAS5900-

    Battery Charger -VAS5900- Device Description The Battery Charger -VAS5900- is designed to charge all 12 V Batteries -A- in the VW group. Battery Charger -VAS5900- Control Field Overview 1 - Display 2 - ↑-button "Up" 3 - ↓-button "Down" 4 - START/STOP-bu

     Driver Front Airbag Crash Sensor -G283-, Removing and Installing

      Note The Passenger Side Front Airbag Crash Sensor -G284- is removed and installed the same way. Removing   WARNING Risk of injury due to involuntary deployment. Pay attention to the safety precautions when working with pyrotechnic components. Refer to → Chapter "Safety Precau

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