Thanks to this forum posting, I bought a sensor from rockauto for around $50 and replaced it on our 2018 cmax. Getting to the sensor is a bit of a challenge as there is limited room and the dashboard back panel simply gets in the way, but with patience and help from my wife's smaller hands working inside the dashboard...success.
Greg
Ok, guys. Finally my TCU has arrived and I flashed the J-series firmware. Everything works like a charm now, but departure times. So, my guess we still have to wait for the new firmware. Attached my config and screenshots bellow.