MMI system is sporadically inoperative or freezes. No audio from all audio sources (for vehicles with base sound system) or no audio from AM, FM, and satellite radio (for vehicles with Bose or Bang & Olufsen sound system). This TSB does not apply to vehicles with a separate amplifier and the complaint "no audio from all audio sources." Bluetooth is inoperative or loses connection. Bluetooth phone does not download contacts and/or call stacks. Satellite radio band is not available in band selection screen. Satellite radio presets sporadically disappear. When starting the 3G MMI system, the start screen does not appear and only the time is shown. This bulletin only applies to vehicles with Navigation Plus (PR Number 8DY). The applicable vehicles can be clearly identified by the controller located in the center console. Continual improvements to MMI software provides solutions to issues experienced in the field.
