AFTER OWNING MY USED 2006 TOYOTA PRIUS FOR A WEEK, I HAD MY 1ST INCIDENT: I WAS DRIVING DOWN THE ROAD AT NIGHT, AND RIGHT HEADLIGHT WENT OUT, WHILE LEFT HEADLIGHT REMAINED ON. TURNED THE HEADLIGHT SWITCH TO 'OFF' POSITION, AND THEN TO 'ON' POSITION. THE HEADLIGHT CAME BACK ON FOR ABOUT 5 MINUTES, AND THEN WENT OFF AGAIN. ABOUT 2 WEEKS LATER, I STARTED HAVING THE SAME ISSUE WITH BOTH HEADLIGHTS. I USED THE SAME METHOD AS ABOVE IN ORDER TO GET THE HEADLIGHTS TO COME BACK ON. IT DOES NOT SEEM TO MATTER WHETHER OR NOT I HAVE JUST STARTED THE CAR, OR WHETHER IT HAS BEEN RUNNING FOR A WHILE... THE BULBS GO OUT WHEN THE CAR IS 'COLD' AND WHEN IT HAS BEEN RUNNING FOR A WHILE. I TOOK THE CAR TO MY REGULAR MECHANIC TO SEE IF IT WAS THE BULB, ETC. ( AS ELECTRICAL PROBLEMS WILL NOT BE COVERED UNDER MY USED CAR WARRANTY ). I ALMOST WRECKED THE CAR GOING AROUND A DARK CURVE IN THE ROAD THE OTHER DAY, WHEN BOTH HEADLIGHTS WENT OUT. I HAVE ALSO BEEN PULLED OVER TWICE FOR IMPROPER EQUIPMENT... BUT FORTUNATELY, I WAS NOT FINED. I EXPECT THAT I WILL EVENTUALLY GET A FINE IF THIS PROBLEM DOESN'T GET FIXED... OR WORSE... I COULD HAVE A WRECK AND BE KILLED... AS MOST OF THE DRIVING I DO IS AT NIGHT, AND OFTEN... I DRIVE ON COUNTRY ROADS THAT HAVE NO STREET LIGHTS... NOT TO MENTION... DEER RUNNING OUT IN THE ROAD. *TR