I love my BS. But I HATE the backup noise. I've read a lot of responses about it and the ones that mention just "living with it" are, imo, ridiculous. I have a little over 18k on my 2021 and no vehicle should sound like this. I went in for the "fix" which did make it worse. There is no rhyme or reason to it. Damp, dry, cloudy out, sunny out, hot, cold - doesn't matter. It's a nasty noise that makes people turn to look where the sound is coming from and to me, that is not okay. I would rather people look at my BS cause it's awesome, not because it's making the sound of a dying whale. I will continue my campaign of complaining to Ford and my dealer until someone figures it out.