NHTSA Complaint #10897905 — 2004 TOYOTA PRIUS

DESCRIPTION OF THE PROBLEM: THE H.I.D. HEADLIGHTS ON MY 2004 PRIUS FAILS UNEXPECTEDLY (THEY TURN OFF RANDOMLY, ON THEIR OWN). THIS PROBLEM AFFECTS MAINLY THE RIGHT HEADLIGHT. THE RIGHT HEADLIGHT FAILS VERY FREQUENTLY (HUNDREDS OF TIMES DURING THE LAST 12 MONTHS). THE LEFT HEADLIGHT FAILS SPORADICALLY (LESS THAN 10 TIMES DURING THE LAST 6 MONTHS). THIS ISSUE AFFECTS BOTH LOW BEAM AND HIGH BEAM HEADLAMPS SIMULTANEOUSLY. WHEN A HEADLIGHT FAILS, I TURN OFF THE LIGHTS THEN I TURN THEM BACK ON. THIS BRINGS BACK THE LIGHTS. THEN THE FAILURE OCCURS UNEXPECTEDLY AFTER SECONDS, MINUTES, OR HOURS. THIS ISSUE HAS OCCURRED WHILE MY VEHICLE WAS STATIONARY, IN MOTION, ON A CITY STREET OR A HIGHWAY, TURNING, BRAKING, ETC. THIS ISSUE ALSO OCCURS REGARDLESS OF ROAD CONDITIONS (SMOOTH FLAT ROADS & SPEED BUMPS / POTHOLES) OR WEATHER CONDITIONS (SUNNY, RAINY, SNOWY, WARM & COLD OUTSIDE TEMPERATURES). THIS IS A MAJOR SAFETY CONCERN, ESPECIALLY WHEN DRIVING NIGHT TIME ON COMPLETELY UNLIT ROADS.