OWNER REPORTS INDICATE ALLEGATIONS OF IMPROPER HEADLIGHT OPERATION OF ONE OR BOTH HEADLIGHTS.SOME REPORT INTERMITTENT OUTAGE OR DIMMING.MANY REPORT THAT THE CONDITION IS RANDOM; IT SOMETIMES DOES NOT REPEAT AND LASTS FOR A VERY SHORT DURATION. A SAFETY-RELATED DEFECT HAS NOT BEEN IDENTIFIED AT THIS TIME AND FURTHER USE OF AGENCY RESOURCES DOES NOT APPEAR TO BE WARRANTED.ACCORDINGLY, THIS INVESTIGATION IS CLOSED.THE CLOSING OF THIS INVESTIGATION DOES NOT CONSTITUTE A FINDING BY NHTSA THAT A SAFETY-RELATED DEFECT DOES NOT EXIST.THE AGENCY WILL MONITOR THIS ISSUE AND RESERVES THE RIGHT TO TAKE FURTHER ACTION IF WARRANTED BY THE CIRCUMSTANCES.SEE SUMMARY REPORT FOR ADDITIONAL INFORMATION.