I have a 2012 f150 fx4 with issue with my dual climate temperature control with heated and cooled seats. Seats no longer turn on most of the time and if they do on full heat they blow ice cold air. The defrost light doesn't turn on, heated mirrors still work but not the back window. Once in a while when truck is set at 16°C passenger side will blow at that temperature but driver side will blow full heat. I think it may be the circuit board. Any help would be greatly appreciated. Thanks in advance.