Section 1644 (Navigation/Telecommunication - (Service Information) - 2500 Hd): Microphone: Description
Vehicles equipped with the optional hands-free system have two stereo microphones (1) mounted in the headliner just above the driver and front passenger, one to each side of the headliner. The two microphones are individually powered by and provide hard wired inputs to the Radio Receiver Module (RRM) in the instrument panel whenever the Voice Recognition (VR) feature of the hands-free system is active. These two microphones are connected to the vehicle electrical system through a dedicated take out and connector of the overhead wire harness.
In vehicles equipped with the optional Uconnect™ Access system, the inside rear view mirror system houses both a SOS push button (2) and a Assist push button (4).
The microphones cannot be adjusted or repaired and, if damaged or ineffective, they must be replaced.