2007 LEXUS LS460L Electronic Stability Control Esc Problems

THE VEHICLE DASHBOARD COMES UP WITH SEVERAL WARNINGS. 1) CHECK VSC SYSTEM. 2) CHECK PCS SYSTEM. 3)CHECK ABS. 4) BRAKE MALFUNCTION. 5) CHECK BRAKE SYSTEM. IT SAYS TO PULL OVER AND TO NOT DRIVE THE VEHICLE. LEXUS DIAGNOSED MY VEHICLE AS NEEDING TO HAVE THE BRAKE ACTUATOR REPLACED AT A COST OF NEARLY $3500! THE DEALER SAID THAT THEY HAD ALREADY REPLACED SEVERAL OF THESE ON THIS MODEL VEHICLE IN JUST THE PAST FEW MONTHS. AFTER LOOKING ONLINE, I FOUND THAT THERE ARE A LOT OF LEXUS OWNERS WITH THE EXACT SAME PROBLEM THAT OCCURRED IN MY VEHICLE, WITH SOME OWNERS ALREADY HAVING THE PART REPLACED TWICE! THIS IS OBVIOUSLY AN ONGOING PROBLEM. LEXUS HAVE SINCE MADE A NEWER, IMPROVED VERSION OF THE PART. THERE WAS ALSO A TSIB (TECHNICAL SERVICE INFORMATION BULLETIN) ISSUED ON DECEMBER 2, 2009 FOR "BRAKE ACTUATOR KNOCK NOISE" L-SB-0178-09 LEXUS ARE NOW COVERING THIS PART...