Brums from the amaturation board

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#1
Original: German · machine translated
At the A8 3.7 year 96 of my father it is buzzing from the direction of the blower box behind the amature board. It's quite funny, because the blower engine is not and it's also independent whether the blower is on or off. My guess is that there's a second smaller fan engine, which is, for example. is pressed by the REST button, because the ignition is off and you press REST, then it buzzes, you turn off it is gone. And now the joke, if the engine is started or only the ignition is on, then the hum comes after approx. 4-5sec and is also not to be stopped. Somebody had this before and can help me, because I don't want to disassemble everything for nothing
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#2
Hallo,

ich nehme an es ist der Gebläsemotor für den Innenraumsensor. Er befindet sich in der Mittelkonsole oberhalb des Klimasteuergerätes
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