Joe John,
Have you had the seatbelt and start/stop issue resolved? I’m also having the same issue where is states “driver seatbelt not fastened” and a warning message with the auto start/stop disabled. Have a Grand Cherokee L Limited with a 1000 miles. This is our second Cherokee L, our first was a Laredo that ended up have an electrical seizure a few hours after leaving the dealership. We were told it was a battery issue, they had the car two weeks trying to diagnose it, only to be told it was an anti theft system issue. The next day the check engine light came on! The dealership was awesome took it back and gave us the Limited. But now concerned it might also have some crazy electrical gremlin? Hoping it’s an easy fix, the wife loves the car!