TL* THE CONTACT OWNS A 2019 NISSAN ALTIMA. THE CONTACT STATED THAT WHILE DRIVING AT VARIOUS SPEEDS THE COLLISION AVOIDANCE SYSTEM WOULD RANDOMLY ACTIVATE AND REDUCE THE VEHICLE'S SPEED. THE FAILURE OCCURRED ALTHOUGH NO OBJECTS WERE PRESENT NEARBY. THE CAUSE OF THE FAILURES WERE NOT DETERMINED. IN ADDITION, WHILE DRIVING APPROXIMATELY 35 MPH AND PRESSING THE BRAKE PEDAL THE VEHICLE SLOWED BEFORE THE BRAKING SYSTEM MALFUNCTIONED CAUSING THE VEHICLE NOT TO STOP AND CRASHED INTO THE REAR OF A TRUCK. NO INJURIES WERE REPORTED AND NO POLICE WAS CALLED TO THE SCENE. THE MANUFACTURER AND LOCAL DEALER WERE NOT NOTIFIED OF THE FAILURE. THE VIN WAS NOT AVAILABLE. THE FAILURE MILEAGE WAS 16,000.