Heater appeared to be working fine until 15 Jan 2017. Leaving the airport for a 2 plus hour drive home, I realized it was blowing cold air. Raising the temperature (electronically controlled) did not help nor changing the direction from which the heat flowed. I have been back to a Dodge dealer (the dealership where I got the car has since gone under) for the issue. They have checked and reset the baffle plates/air flow control plates in the heater but this fix doesn't hold. We have been back 3 times already and we need to go back again. Blowing cold air again. I am not sure if they are checking the electronic/mechanical interface but I will ask this time.