Just ordered one today from Ross Equipment. Found the updated (2016) source info here;
Ross Equipment can be reached at 800-290-9798. Magellan makes the replacement display. The part number is 1539-10501-00.
Today (11/01/2019) the price was $246.49 plus tax & shipping.
It is amazing how many Freightliner RVs were produced with the worthless impossible-to-read info displays. I can hardly wait to install the replacement model.