I also posted this under radio/multimedia, but this maybe an electrical problem?

Vehicle: 2003 C320 4Matic Wagon with Mercedes/Bose Command System.

Problem:
1. When the seat warmers are on high I adjust the volume.
2. When the warmers turn down or off, the volume turns down automatically.

Any idea why? I would assume if it was a voltage problem, the volume would go up when the warmers turned off since more voltage could now go to the amp.

Can someone explain to me why this happens and if there is anything I should look at? The battery is fine and the alternator is good.

Thanks.

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Dr. Brad

2003 C320 4Matic Station Wagon
2002 C240 Elegance
1982 380 SEL Star Certified

Electricity is my worst subject, but we're in the midst of a blizzard and i'm tired of watching it snow....

Sort of sounds like the audio system "thinks" you are slowing down from speed...which suggests that the seat warmers might be more of a drain on your electrical system than normal. If that hunch is right, then could it be alternator (worn brushes??) even if it's registering good output?

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Earl McLain
'02 C230 Kompressor
'89 560 SEL "Frau BlueCar" (retired April 2004)