2008 AUDI A6 Electronic Stability Control Esc Problems

MULTIPLE ISSUES ON THIS CAR THAT ALL CAME ON ABOUT THE SAME TIME. THE AMB/PARKING BRAKE MODULE/ESP WARNING LIT UP, AND A FEW DAYS LATER THE CAR WAS NOT SHIFTING INTO GEAR ON STARTUP, AND WHEN IT DID SHIFT INTO GEAR IT SHIFTED ERRATICALLY AND WENT INTO NEUTRAL ON OCCASION. THE TRANSMISSION CONTROL MODULE, ABS SENSORS BOTH WENT BAD ON THE CAR AND THE CAR WAS UNABLE TO SHIFT INTO GEAR. THE CAR SAT AT AUDI LEN STOLER IN OWINGS MILLS, MD FOR 2 WEEKS FOR PROBLEM TO BE DIAGNOSED. THEY SAID IT WAS THE TRANSMISSION CONTROL MODULE AND THE ABS SENSOR THAT WAS BAD. THEY REPLACED THE ABS SENSOR IN THE HOPES THAT IT WOULD RESOLVE THE TRANSMISSION PROBLEM! IT DID NOT. THE BILL FOR THE ABS, AND A FAILED DRIVER DOOR LOCK SWITCH REPLACEMENT WAS ALMOST $1400! THE TRANSMISSION CONTROL MODULE IS A SMALL BLACK BOX THAT HAS...