2012 BMW 528I Electronic Stability Control Esc Problems

VEHICLE BOUGHT IN JULY 2014 WITH ~24K MILES; STILL UNDER FACTORY WARRANTY. MAINTENANCE MAINTAINED. 9-12 MONTHS LATER, A "DRIVE TRAIN MALFUNCTION" LIGHT CAME ON. I HAD JUST LEFT THE DEALERSHIP SO I CALLED THEM AND THEY TOLD ME TO BRING IT BACK IMMEDIATELY; I DID. MANY TESTS LATER, WAS TOLD MY "MOTHERBOARD DIED" (DME UNIT); AFTER A MONTH IN THE SHOP...REPAIRED. NOW, 4/2016, LESS THAN 60K AND FRESH OUT OF WARRANTY...I WAS DRIVING HOME WITH MY SON ON THE INTERSTATE, ABOUT TO GET OFF OF MY EXIT AND ANOTHER "DRIVE TRAIN MALFUNCTION AND LOW ENGINE PRESSURE" LIGHT COMES ON AND THEN ALL OF A SUDDEN MY CAR STOPPED ON THE 4 LANE OFF-RAMP. AFTER WAITING FOR AN HOUR FOR THE TOW TRUCK TO ARRIVE AND TRYING TO PUT MY CAR INTO NEUTRAL AND ABOUT 30 MIN WITH THE TOW TRUCK DRIVER TRYING TO PUT THE CAR IN NEUTRAL, I CALLED...