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Fitted a genuine Audi bluetooth kit to my RNS-E in my B7 RS4.

Works fine but I now have a whine through the speakers which increases on accelerating?

Any ideas? Harness was plug and play. Sounds like a grounding issue?

electricfurnace wrote: Pulled out stereo, located brown bose wire in pin 7 in green connector in quadlock.
Pulled out wire and grounded it a screw on back of head unit.

Something tells me this has something to do with it...

I had this a while ago & it was the amp that was causing the whine,try disconnecting it.
I disconnected mine & was gonna get a new one,but when I reconnected it the whine was gone,but it does come back from time to time.

harding wrote:

electricfurnace wrote: Pulled out stereo, located brown bose wire in pin 7 in green connector in quadlock.
Pulled out wire and grounded it a screw on back of head unit.

Something tells me this has something to do with it...

Dont think so as before i fitted the bluetooth but after doing the bose mod it was fine?

obikaii wrote:I had this a while ago & it was the amp that was causing the whine,try disconnecting it.
I disconnected mine & was gonna get a new one,but when I reconnected it the whine was gone,but it does come back from time to time.

How do you disconnect the amp mate?

Can you undo the bose mod?

Yep just undone the bose mod, still whining

Still whining! Really odd. Bluetooth harness issue maybe?

You can unplug the amp from the boot,its behind a removable pannel,drivers side,the lead has a red clamp that you need to unclip.