NHTSA Complaint #10732041 — 2011 JEEP GRAND CHEROKEE

I HAVE A JEEP GRAND CHEROKEE 2011, WITH 58K MILES, AND MY "SER 4 WD" AND TRACTION CONTROL LIGHTS ARE ON. WHAT COULD BE THE CAUSE OF THIS? THE TRUCK SHUT OFF WHILE I WAS DRIVING. THE DEALERS TOLD ME WHEN THEY CHECKED IT THEY FIND NOTHING WRONG AND MAYBE THE SPARK PLUGS NEEDED TO BE CHANGE. MY BACK UP CAMERA WORKS SOMETIMES. WHEN I ASKED WHY IS THIS HAPPENING THEY TOLD ME MAYBE THE CIRCUIT BOARD MAY BE BAD. MY HEAD LIGHTS KEEPS GOING OUT EVER 3 MONTHS, WHEN I ASKED THEY TOLD ME THERE IS NOTHING WRONG WITH THE LIGHTS, I MAY NEED TO CHANGED THE BULBS TO CHRYSLER BULBS. WHAT IS GOING ON WITH CHRYSLER VEHICLES AND WHY EVERY TIME YOU GO TO THE DEALER WITH A KNOWN PROBLEM, THEY CHARGE YOU A DIAGNOSTIC FEE OF $125.00?