Audio System - No Audio After Check Control Message

SI B65 10 08
Audio, Navigation, Monitors, Alarms, SRS

May 2008
Technical Service

SUBJECT
RAD2: Intermittently No Audio after Check Control Message

MODEL
E90, E91, E92, E93 *(3 Series)
E82, E88 *(1 Series)

*with option 663 (Radio BMW Professional) and option 677 (Top-HiFi audio system)

Vehicles produced from September 2007

SITUATION
After a check control message (e.g., seat belt warning gong, key in the ignition and door open warning gong), intermittently the audio is thereafter muted in all modes (FM, AM, CD, AUX, and USB). The audio is restored when the ignition is cycled.

CAUSE
Software issue in the RAD2 (Radio2 from SIEMENS)

INFORMATION
Do not replace parts! Please explain the cause of the problem to the customer. This Service Information will be updated as soon as an improvement is available.

A software solution is being developed, with an expected release around October 2008.

WARRANTY INFORMATION
Information only





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