VolvoMike-
Welcome to Winnieowners.com!
There's a link to the MMDC Display Unit Owners Manual on this Web page:
RV Tech Library - Freightliner's MMDC Information Display System
Also,
here's a link to a Web search of iRV2 posts with the terms "freightliner" and "Medallion" in them.
On another topic, you should add a signature to your user profile. It usually includes the year, make and model of your coach, but can include other information. A signature is appended to each post. To create/edit a signature, click on the "User CP" link in the orange bar at the top, then click on "Edit Signature."