2011 BMW 750I US Power Train Problems

I PURCHASED VEHICLE IN SEP 2015. THE VERY 1ST WEEK DRIVING THE VEHICLE, I RECEIVED A TRANSMISSION MALFUNCTION CODE ALMOST EVERY TIME I'M DRIVING AND PICKING UP SPEED WHICH ORIGINATED WHEN 1ST PURCHASED @ 57K MILES. I ADDRESSED IT TO 3RD PARTY MAJOR DEALER, AUTONATION OF TOYOTA IRVINE, CA, AND ALL THEY MANAGED TO PERFORM ON VEHICLE WAS A SOFTWARE UPDATE. FAULTY CODE CONTINUED TO POP UP AND DRIVING CAPABILITIES CONTINUED TO BE DELAYED. I FINALLY GAVE UP AND WENT TO ACQUIRE MY OWN DIAGNOSTICS AND FAULT CODE "400361 RATIO MONITORING/GEARSHIFT 6-5 IMPLAUSIBLE" WHICH HAS BEEN DETERMINED TO BE INTERNAL TRANSMISSION FAILURE AND RECOMMENDATIONS ARE ENTIRE REPLACEMENT (COST REPAIRS OVER $10K). I COMMUNICATED THIS TO THE CEO OF TOYOTA IRVINE NAMED [XXX] AND HE REQUESTED THAT I FORWARD DIAGNOSTIC PROOF AND HE'D AGREE TO SEE WHAT CAN BE DONE. NOW APRIL 2016 STILL HAVE HAD NO RESPOND BACK FROM ANYONE...

TL* THE CONTACT OWNS A 2011 BMW 750I. THE CONTACT STATED THAT WHILE DRIVING APPROXIMATELY 65 MPH, THE VEHICLE STALLED. THE VEHICLE WAS TOWED TO THE DEALER FOR DIAGNOSIS. THE TECHNICIAN STATED THE FUEL PUMP WOULD HAVE TO BE REPLACED. AFTER THE REPAIR, THE TRANSMISSION WARNING LIGHT ILLUMINATED AND THE FAILURE RECURRED. THE VEHICLE WAS TAKEN BACK TO THE DEALER WHERE THE TRANSMISSION WAS REPLACED. THE CONTACT CONTINUED TO EXPERIENCE THE FAILURE. THE VEHICLE WAS TAKEN BACK TO THE DEALER A THIRD TIME. THE CONTACT WAS NOT AWARE OF THE NECESSARY REPAIRS. THE MANUFACTURER WAS MADE AWARE OF THE FAILURE. THE VEHICLE WAS NOT REPAIRED. THE APPROXIMATE FAILURE MILEAGE WAS 18,000. *TR