2012 Dodge Avenger wipers, windshield & visibility problems

There is no heat on the passenger side but there is heat on the driver's side. There seems to be a mechanical defect with this vehicle because the vehicle stalled on a hill in park and started to roll down the hill and the brake and everything stopped working at that moment in the car. I also had another incident with the car stalling while driving and due to this it caused another accident. The car is also well kept, but it seems to have a mechanical defect

Tl* the contact owns a 2012 dodge avenger. While attempting to heat the vehicle and activate the windshield defroster, the contact realized that the features were inoperable. The vehicle was taken to an independent mechanic who diagnosed that the heater core needed to be replaced also, mechanic diagnosed the problem as the actuator doors. Independent dealer cut and open the dash and found heater core was plugged with silicone and dust particals from when factory put engine together.