2016 2.0 MKC blower motor will not go off high speed even though the controls will not go off zero. I already changed the blower motor resistor and it did not change anything. Not sure what the next step is
I have had two cars where the heat/defrost/hvac mixing unit failed. The default is to go to high only on defrost for the windshield so that if it fails you can still see out the windshield. Yes it was expensive to fix as most of the dash needed to come out.