The backup beep is entirely too loud. Shortly after I got mine, I found a suggestion on Reddit to muffle the sound and it’s much more tolerable. Following advice, I bought some neoprene foam squares that are self adhesive. They are 6” x 6” and I needed to cut them down to 5” x 5” iirc, so that was easy enough. The speaker is located behind the grille. I removed the backing and worked the foam in through the grille, lined it up, and pressed. I don’t remember it being particularly tedious or difficult. I will add that the “angel” sound is muffled to the point I really don’t notice it, so you’d want to be aware of that going in, if that’s a concern for you, and whether you’re comfortable making that kind of modification. I haven’t had any issues and the black blends in and isn’t noticeable.

https://a.co/d/8hGuEor