— My AC/ Heat Control Unit failed and isn’t able to send the signal to turn on heat and is now stuck on cool air. The part # is 2750044BB0C-A. It is in a 2016 Nissan Rouge and has lost connection. — It is a safety concern due to that I am unable to keep warm in harsh cold weather as well as I am unable to unfreeze my windshield so I can proceed with safe driving visibility. The only air blowing is cold air which dsn’t mix with cold winter weather. — It has been inspected by a mechanic and he has said that it is an electrical problem because it isn’t sending the correct signal to the rest of the AC/Heat unit to perform correctly. -When it was still working it kept going in and out with cold and hot air. Then it finally just stopped working. There was no sound or bangs to indicate it was finally broken. I just knew when I put the setting to heat it was not giving me hot air it was coming out as cool or really cold air.