[N8XWB]

I have a 2018 Premier with Driver Confidence Packages 1,2 & ACC. Today when I place the car in reverse, I get a warning as if there is an object behind the car (there is none). I hate to waste time at the dealer if there is any easy fix to this issue?! Any ideas -- oh, the rear of the car isn't dirty. Photos attached. Thanks.

 

[JuneBug]

I would clean the lens with a soft damp cloth. See that fuzzy spot just above and slightly to the right of the tip of the triangle? Might be something on the lens. Also clean each of the ultrasonic sensors with the same cloth.