Hi guys, just picked up an earlier 2009 c200 Kompressor with only 46k on it.. The merc dealers assured me its normal for super charged models to be noisey on cold starts.. Sort of a mild whining noise for about a minute or so.. Does anyone else experience that maybe from new? The other thing I’d like to find out is the stereo volume. After turning down the volume to zero, you start the car again and it’s turned up again. Is there a way to change that? Regards Marty