Continuous constant noise from speakers

[adm1n1strator]

Hello,
This E90 323i speakers have constant noise coming, as soon as I put ignition key in, it turns off 2minuutes after I take ignition key out.

This speaker noise does not change with volume up or down from radio. Looks like its coming from all speakers.

Please check audio I recorded coming out from speakers. I put phone microphone right on the top of speaker.

https://vocaroo.com/i/s1nfJDmml9fn

Thank you

[adm1n1strator]

Hello,
This E90 323i speakers have constant noise coming, as soon as I put ignition key in, it turns off 2minuutes after I take ignition key out.

This speaker noise does not change with volume up or down from radio. Looks like its coming from all speakers.

Please check audio I recorded coming out from speakers. I put phone microphone right on the top of speaker.

https://vocaroo.com/i/s1nfJDmml9fn

Thank you

[Clambert]

I have this problem with my 2008 335iC. How did you resolve it?

[adm1n1strator]

hi, i just disconnected and re-connected radio connection and it seemed to work out for me, try removing radio connection and see if noise is still there. so you will know what is wrong, either its radio or wiring issue. thanks