The very first thing I would check is the ground wires from the battery to where it connects to the firewall or where ever on the new Jeeps.
On my 1999 an older model so there may be no connection but when I first got in to my Jeep on the dealers lot there was no odometer display and I do not remember if it said anything, anyway the service guy said that they still had not put in the fuse yet????? :h So this is a big stretch but it may have something to do with that whatever that is. As posted earlier the Jeep site guys will know.
This is where I go
Jeep technical forum JimR