After doing some research I found there are 2 mileage counters. One for oil change and one for service due. They want you to take it into the dealer and have maintenance performed according to the maintenance schedule in the owners manual every 10,000, 20,000, 30,000 etc.
I found ways to reset it on older Jeeps, but not much info on the newer Jeeps. I would suggest you go to your service interval screen on your display using the arrow buttons on the steering wheel and see if there is a way to reset. Mine didn't have a reset, but I still have 9,000 miles to go.
Otherwise it may have to be reset using a diagnostic computer tool to clear the computer code.
One other thing to try, while cycling thru the display there is a screen that says "Messages" My jeep has 0 messages, yours may a have a message and a way to clear it.