TL*THE CONTACT OWNS A 2002 LEXUS LS430. THE CONTACT STATED THAT THE TRUNK LID IN THE REAR OF THE VEHICLE WOULD SUDDENLY FALL DOWN OWN ITS OWN. THE FAILURE OCCURRED SEVERAL TIMES AND THE MOST RECENT OCCURRENCE CAUSED THE CONTACT TO SUSTAIN A CONCUSSION. THE CONTACT CALLED THE DEALERSHIP AND THE DEALER STATED THAT THE PISTONS THAT HELD UP THE TRUNK NEEDED TO BE REPLACED. THE CONTACT CALLED THE MANUFACTURER WHO STATED THAT HE WOULD HAVE TO HAVE THE PISTONS REPLACED AT HIS EXPENSE. THE VIN WAS UNAVAILABLE. THE CURRENT MILEAGE WAS APPROXIMATELY 60,000. THE FAILURE MILEAGE WAS APPROXIMATELY 59,000.