Radio Issue - High Pitched Noise

[audihere]

Very high pitch tone like radio interference inside cabin when coasting at freeway speed. Pressing throttle in just a little will make sound go away. Letting up and sound comes back. Very high frequency.

Anyone with experience or info on cause/solution? Would be very helpful to have some insight when I take it in again tomorrow.

Thanks!

[AtlantisF80]

maybe it has something to do with the ASD. you can try unplugging the module in the trunk or code it off.

i coded mine off. on rare occasion i sometimes do hear a high pitch radio sound but it is not related to throttle. it may happen when i connect my phone via usb or bluetooth but it goes away and i am not bothered by it. it is hard to replicate the noise so i can't pinpoint it a certain action or source.

[audihere]

It happens to me when letting completely off the throttle on freeway and goes away as soon as I slightly depress throttle again. Can do it over and over.

Sounds about the same as a 4th grade high pitch hearing test, so most people probably wouldn't even notice.

I did wonder if my bluetooth connection to phone had anything to do with it. How do you unplug the ASD in the trunk? I could try that.

Thanks!

[AtlantisF80]

go here

http://f80.bimmerpost.com/forums/sho...1051323&page=5