TL* THE CONTACT OWNS A 2007 TOYOTA CAMRY. WHILE DRIVING APPROXIMATELY 25 MPH WITH THE BRAKE PEDAL DEPRESSED, THE VEHICLE HESITATED TO STOP. THE FAILURE RECURRED MULTIPLE TIMES. IN ADDITION, THE CONTACT STATED THAT A BLACK SUBSTANCE WAS ENTERING THE VEHICLE THROUGH THE VENTS. THE CONTACT'S LEGS WERE COVERED WITH THE BLACK SUBSTANCE, WHICH PROMPTED THE CONTACT TO SEEK MEDICAL ATTENTION. THE VEHICLE WAS TAKEN TO A DEALER. THE TECHNICIAN DETERMINED THAT THE BLACK SUBSTANCE WAS BRAKE DUST; HOWEVER, THE VEHICLE WAS NOT DIAGNOSED OR REPAIRED. THE MANUFACTURER WAS NOT NOTIFIED OF THE FAILURE. THE APPROXIMATE FAILURE MILEAGE WAS 43,000.