Rear Microphone (Active Noise Cancellation)

WARNING: This page is about a different car, the 2016 Infiniti Q50. However, it is still accessible from the selected car via links, so may be relevant.

Rear microphone is installed on the rear center of the headlining assembly.

Courtesy of NISSAN NORTH AMERICA, INC.
The rear microphone is used for the active noise cancellation system.
The power is supplied from the BOSE amp. to the rear microphone, transmitting sound signals to the BOSE amp. at the during active noise cancellation system.