Disclaimer: Links on this page pointing to Amazon, eBay and other sites may include affiliate code. If you click them and make a purchase, we may earn a small commission.
Try resetting the electrical system. Just disconnect the battery for about 10 minutes. I had mine stop working once when the "change oil" message appeared on my EVIC.
I've had the same problem with turning on my cruise control. It's happened several times and when it does happen, if I wait a little while and try it again it will come on. Less than 5,000 miles on a 2014 1500.
I wonder how may others are experiencing this issue, this thread tells me I'm not alone here.
Mine does this, too. Talked to my buddy that is a tech, and he said they keep the switches in stock for that reason. He said it's a pretty common problem. Getting mine done Monday.