Earlier in February my engine light came on disabling my 4WD while taking a trip to the Oregon coast during a snow storm, after returning home the engine light shut off and my key fob completely stopped working. I took it to the dealership, they completely replaced the key fob, and didn't get any code from the engine light being previously on.
It's just turned on again. And a trip back to the dealership we go...
There is another thread that discusses this service light issue. So far everyone who had this happen lost their capability to change/put into 4wd until it reset. Had my renegade for 2 years before it happened. Decided not to risk it happening again, traded got a JK 2 door.