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Discussion Starter · #1 ·
My 2008 roadster with Bose has started making a "feedback/alternator" whining noise regardless of whether the headunit is on or off. The headunit is an RNS-E and the entire installation is Audi-standard, no aftermarket parts - it does have the Audi bluetooth kit (as factory fit).

So.... where do I start looking? The sound is OK (as good as normal) so if the Bose is malfunctioning, it's a weird symptom.... maybe a loose ground wire somewhere?

Anyone? Please?
 
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