THE CONSUMER APPLIED THE BRAKE PEDAL WHILE EXITING THE TURNPIKE. THE BRAKE LIGHT ON THE DASH SUDDENLY ILLUMINATED AND THE BRAKES BECAME INOPERATIVE. AS A RESULT THE VEHICLE STRUCK A MEDIAN BARRIER AT A TOLLBOOTH. TWO DAYS PRIOR TO THIS ACCIDENT THE CONSUMER HAD THE VEHICLE'S MASTER CYLINDER AND BRAKE LINES REPLACED (OHIO TRAFFIC CRASH REPORT). *PH *NM