Faulty control panel. You will probably need to replace it as they are crap. Ford got smart and went back to the physical buttons but not for the Flex. This is a typical sign of it going bad.
The park assist would have nothing to do with the panel at all. The panel runs on the ICan network. The HVAC module is on the same network as the Park Assist however (MSCan).
The park assist would have nothing to do with the panel at all. The panel runs on the ICan network. The HVAC module is on the same network as the Park Assist however (MSCan).