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Active Noise Cancellation Microphone Overview






Active Noise Cancellation Microphone Overview

The Active Noise Cancellation (ANC) system has four additional microphones inside the headliner with special software inside the digital sound system control module (J525) (BOSE/Bang & Olufsen).

ANC microphones





1. Front Interior Lamp (W1) with Interior Microphone (R74)

2. Left Center Microphone (R142)

3. Left Rear Microphone (R144)

4. Right Rear Microphone (R145)

5. Right Center Microphone (R143)


The ANC microphones have a trailing cable. The coupling is inside the headliner.

It is necessary to lower the headliner in order to remove the coupling.

ANC Microphones, removing and installing, refer to => [ ANC Microphones (R142)/(R143)/(R144)/(R145) ] ANC Microphones (R142)/(R143)/(R144)/(R145).