Brief component description: Microphone

WARNING: This page is about a different car, the 2013 BMW X5, 2012 BMW X5, and 2011 BMW X5. However, it is still accessible from the selected car via links, so may be relevant.

Depending on the series and the vehicle equipment, two microphones (microphone and microphone 2) are installed in the left and right sides of the roofliner. The microphone installation location can vary depending on the vehicle type. The microphone on the driver's side is always used for an emergency call.

The microphones work with full duplex transmission. This means that the audio frequency signals are activated for both parties. It is thereby possible to speak and listen during the same call.

The microphone on the driver's side is connected to the Telematic Communication Box (TCB). The microphone signals are forwarded to the headunit for the hands-free mode of the telephone system.

The microphone 2 for speech processing (if part of the equipment) in the roofliner on the passenger's side is then directly connected to the headunit.

Fig 1: Identifying Microphone And 2 Pin Plug Connection

Courtesy of BMW OF NORTH AMERICA, INC.

Item	Explanation
1	Microphone
2	2-pin plug connection