I have an appt with the local Chrysler/Mercedes dealership tomorrow.
They seemed ignorant about the loaner car until I started reading the Premium Care Plus info to them (thanks for posting it).

I checked the service manual, but the only way that it addresses this issue is to swap out the entire unit.

I just hope they can fix this in time not to mess up my plans for the Tail of the Dragon 11/10 & 11/11.