Here is the word from Specialized, confirmed with the folks at Performance Bicycle:
Hey Ray, unfortunately we don't have any of those laying around or able to be ordered. With that failing you wouldnt be able to set any of those parameters since the display is what controls all of those parts for the app and such. Finding a replacement is the only way to get that functioning again.
Hey Ryan here. What I believe Max is suggesting is looking third party with the part number you gave us. Ebay, Marketplace etc. We produce spare parts for x amount of time and unfortunately that is the case here.
It's disappointing that an otherwise well-functioning bike has to be junked because a single part is not available. On the plus side, I get to shop for a new e-bike.