In a heavy rain yesterday then again today the blind spot mirrors stopped working. Shut the truck off and restarted and they worked, no message, seemed fully functional. Drove it a couple of miles received the same message and they failed again. This morning worked fine this afternoon more thunder storms and they failed with the same message. On failure, the little indicator on the mirrors light up and stay on. Also the mirrors fold in when shutdown. Any thoughts? Have warranty but would rather not go to the dealer as this week is real busy.