hummingbird

I purchased a 2014 Edge Limited with 6600 miles on it from a great dealership in April. My first trip with it the cruise control shut off "sensor blocked". Then my husband and I went on a long trip and it did the same thing. Finally, they ordered an ACC module. That worked fine for about 1 month or so. Then it began doing it again. The latest was Sunday evening, and no other vehicles around us anywhere and it shut off "sensor blocked". I am getting a bit aggrivated with this issue. What is the problem? Everyone at the dealership is awesome but I'm beginning to wonder about the Edge