soft buzzing when ignition turned off - Mercedes-Benz Forum

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post #1 of 1 (permalink) Old 03-24-2013, 08:33 AM Thread Starter
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Date registered: Mar 2013
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Post soft buzzing when ignition turned off

I've just purchased a 2010 c250. When I sit in the car with the engine and ignition off I can hear a very soft buzzing from the housing around the interior lights/rear view mirror area. I believe there is a small fan located in this area. Should it always be on?

The noise is not imposing in any way but concerns me that power is being sucked from the battery unnecessarily.


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