I have a 2012 F-150 and the AC / Heat has stopped working. The controls are intermittently losing power. I checked the fuses and changed nothing and then everything started working for a very short time and now back to not working. this is a basic work truck package with no power anything and the manual HVAC control module. I read all the forums about turning off and on the lights, but mine does not have auto lights and made no difference. Please all help appreciated.

 

My '14 stopped working also. The little panel in the dash that has the AC/Heat buttons and lights on it was bad. Replaced under warranty.