sound system problem

[giokas]

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when the sound system is on and the bike is running the sound is at a certain level.When i turn the bike of e.g. for a stop and then i turn it back on
the sound level is too high and after a few seconds it drops back but at a very low level and i can hardly hear.What is going on? is there a diagnosis system at my local bmw dealer? oh! and some other times the sound just drops by itself

[meese]

Maybe you have a problem with the SVOL system. SVOL is a speed sensitive volume control that changes the radio volume based on the bike's speed. You can try turning it off and see if that helps.

Depress the MAN button and hold for about 4 seconds. The display will change to 'SVOL'. Using the round volume/channel selector on the left hand grip, toggle through settings until you see 'OFF'. Then depress the MAN button again to return to normal function.

See if that makes the problem go away.