Audio-Navigation Unit or Audio Unit

Turn the rear entertainment system ON.
- After the ignition switch is turned ON, push REAR POWER button (A) to turn the rear system on.
- To turn the rear system OFF, push the REAR POWER button, and to turn the whole system off, push the VOL button (B).
  
  Fig 1: Identifying VOL Button And Rear Power Button On Audio Unit
  Courtesy of AMERICAN HONDA MOTOR CO., INC.
Using the select button.
- REAR SOURCE button (A), indicator light off: control of front source from the audio-navigation unit or audio unit.
- REAR SOURCE button, indicator light on: control of rear source from the audio-navigation unit or audio unit.
- The rear source will automatically revert back to front source after 20 seconds if no operation is done.
  
  Fig 2: Identifying Rear Source Button On Audio Unit
  Courtesy of AMERICAN HONDA MOTOR CO., INC.
Viewing the display(s).
The navigation display (A), audio-navigation switch panel display (B), or audio display (C) indicates the status of the front and rear systems.

Fig 3: Identifying Audio-Navigation Switch Panel Display And Navigation Display (With Navigation)
Courtesy of AMERICAN HONDA MOTOR CO., INC.
Rear speaker automatic off function.
By turning the rear speaker off you can reduce the interference between the front source and the rear source (Headphone). The speaker will be turned ON/OFF when press and hold the REAR POWER button for 2 seconds. When the rear speaker is in the OFF mode, the audio display shows the rear speaker icon.

Fig 4: Identifying Rear Speaker Icon
Courtesy of AMERICAN HONDA MOTOR CO., INC.