Rear bumper sensor issue

I have a 2017 CM. Whenever I put it in reverse, the beeping is constantly on with no objects behind me. It would stop eventually but it has been happening more and more recently. Has anybody experienced this?

 

Haven't experienced that. Sounds like it needs to be calibrated (or whatever the proper term is) by the dealer.

 

I had the same problem with my front passenger (2015 Limited) that just beeped away at nothing, just randomly started a couple months ago. I removed the fender liner, and reached in and reseated the sensor and the retainer clip -- its just a plastic clip that holds it in place. Not sure how hard it is to get to the rear sensors, but you may want to give it a shot, vs waiting for hours at the dealer for warranty service.