Could you clarify what causes your hazard switch issues? Is there airflow going (vs passive heating with fan/system off) or heating/expansion issues?Interesting. I should probably read things and learn how to use my car. Been playing with this and other than making my hazard switch constantly pop out of the dash it has worked pretty well with the outside air temperature (OAT) these past few trips being between 40-60.
I was reminded from my drive yesterday that passive heating keeps the cabin comfortable for me while I'm in motion, but in stop/go traffic it's borderline not enough to take the cold edge off.