Dear all -

The family B200 Turbo is making strange beep sounds. They are not seat-belt or warning-lamp related.

The tone is identical to that made by the radio when TP is selected (although the TP is not selected, and the audio system is off). This happened a week ago, then today, and has stopped again.

Soon after starting driving, beeps sound every 30 seconds or so from what appears to be the right-rear loudspeaker. They increase in volume somewhat, continue after the engine is turned off again, and then stop...

Does anyone have any clues?