C220 comand 4.0

I have a C220 CDI Sportcoupe, with Comand APS 4.0 (GPS). The volume of the voice indicationg direction is way too low compared to radio or CD. I didn't find a way to increase the
volume. Any idea?
thanks
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Wait till she starts giving you directions, then turn up the volume as normal.

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Great, it worked....
Thank you! jurij
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