no air movement in hot setting

Typical Chrysler product, one or more of the blend doors have stopped working. Could be a bad servo motor or even broken doors. This can get expensive very quickly.

I would look for a mouse nest. Air not going through heater core. Blend air door bypasses heater core.

Not sure how it happened but all the blend doors were working. I thought it might be a nest but turns out all of the doors needed to be resinked to each other. As soon as I did that the doors worked properly.

Then somewhere down the line the battery dropped below computer threshold. Better have the battery load tested.