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7 Series - E65 / E66 (2002 - 2008)
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  #1  
Old 03-26-2007, 05:52 PM
DeYanko DeYanko is offline
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Alternator Whine

Has anyone experienced alternator whine while using the hands-free device. I have an 03, with the Motorola BTUM and there is a lot of background noise and alternator whine coming through the speakers. The problem does not exist when the radio or cd player is on, only with the hands-free. And suggestions on what I can do to remedy this problem, would be appreciated.
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  #2  
Old 03-27-2007, 07:54 PM
triggerhappy1 triggerhappy1 is offline
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the alternator is not connected to the speakers im kinda confused on what youre asking?
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Old 03-28-2007, 02:15 AM
DeYanko DeYanko is offline
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There is a high pitch noise, kind of like a whistle that gets louder as the rpms increase with the engine. The sound only happens when i use my cell phone through the car audio system. It might not necessarily be coming from the alternator, but my past experiences with other vehicles it was the culprit. Usually feedback through the audio system. Hope that explains it a little better.

Last edited by DeYanko; 03-28-2007 at 02:26 AM.
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