My 2015 Ram 2500 6.7 Turbo diesel has been awesome. With about 120k miles on it, I returned home from a short 30 mile trip into town. Shut the truck down got out and attempted to lock the doors with my key fob as usual. The doors did not lock. Tried all of the function buttons. No Panic, No lock/unlock and no remote start. Stick the fob into the ignition and the truck starts right up and runs fine. Repeat to process noted above with same result. Try my other three key fobs. Same result with two out of three and one fob just totally dead to include not starting the truck. (new battery in the dead fob changes nothing). All four fobs have been used in the past month without issues. Trouble shooting so far nets zero obvious leads. I have several tried several OBDII readers and AlfaOBD as well. I am at a loss. Any feedback or suggestions appreciated.