I have a 2018 300s AWD. During the spring time my climate control began only functioning on a temp setting of Hi for heat and any temp below HI just produces cold air. The A/C works on any of the other temps as long as I activate the A/C function. Shortly after that I noticed a loud noise that synched with the blower motor speed. I took the car to Dodge and they replaced the blower motor under warranty. However the climate controls still only allow heat on HI. I’m wondering if anyone else experienced these issues and what the dealer or yourself did to remedy it. It’s not an issue in warmer weather but when the weather is colder out the hi heat is unbearable after a few minutes but needed to keep windows defrosted and cabin warm. Please help.