I went through a car wash the other day and after I got home noticed my rear driver side parking sensor continuously going off. After inspecting the car I noticed the parking sensor was pushed in out of the bumper, I was going to push it back in when I noticed the plastic piece it mounts in was disconnected from the bumper. It looks like it was held on with a glue or epoxy that just came off. What the hell? Now I can't reinstall it. I have no idea what to do now. The car has never been in an accident and there was no impact to the bumper. Any ideas what I can do?