I have a 23 model Y. I noticed in the past I used to back up and I would get the chimes whenever I would get close to items. Then it went away and I think it came back at some point but for some reason it’s not working and the reason I realize this is yesterday I was slowly backing up, trying to get as close as possible to something and I hit it. Scraped up my car, but why did I not get any noise Alerts when I was getting close. I had no idea I hit something until later on when I saw the scratches.