I have had the same problem twice on my 2014 Cougar. First time was right after warranty. Had to get a whole new control panel...the one in the front storage area. Remote still works. I just bought a new unit again but have not installed it yet. I bought it from Lippert and they say I have to contact the mfg to program which fuses go where....something i will try in the summer.
I think mine happened when I hit two switches at once...just a guess though. One switch might have been stuck when I activated the other. Thankfully the remote still works.