RAD2+ Radio: Background Noise with Audio Turned Off. Background noise (buzzing, crackling, static) can be heard: * At low audio volume * When the radio is turned off * When the ignition is turned off NOTE: Background noise stops when the radio enters sleep mode. IMPORTANT: Background noise is more noticeable on vehicles produced before 09/2009 in case a RAD2+ replacement radio was installed previously. RAD2+ radio concept, manufactured from July 2009 to February 2014
