2005 Toyota Prius exterior lighting problems

“The contact owns a 2005 Toyota Prius. The contact stated that while replacing the instrument cluster, the contact discovered that the turn signals were inoperable. The vehicle was taken to the dealer, who determined that an unknown part needed to be replaced. The vehicle was not repaired. The manufacturer was made aware of the failure. The failure mileage was approximately 143,500.”

“The contact owns a 2005 Toyota Prius. The contact stated that while driving at an undisclosed speed, the left turn signal was activated, however, the left turn signal failed to function as intended. In addition, the contact stated that the four-way flashers failed to function as intended. The vehicle was taken to the dealer where it was diagnosed with a computer failure. The contact was informed that an unknown part needed to be replaced, or an unknown software update was needed. The vehicle was not repaired. The manufacturer was made aware of the failure but provided no assistance. The contact referenced an unknown recall with a similar failure description; however, the VIN was not under recall. The failure mileage was approximately 143,500.”

“THE HEADLIGHTS ON MY 2005 PRIUS CONTINUE TO GO OUT. WE REPLACE THE BULBS BUT EVEN WITH BRAND NEW BULBS WILL BE DRIVING AND AFTER ABOUT 60 SECONDS OF HEADLIGHTS BEING ON THE LIGHT WILL TURN OFF. SOMETIMES ONLY ONE TURNS OFF BUT OFTEN BOLT TURN OFF AND WE'RE IN COMPLETE DARKNESS DRIVING ON THE ROAD. WE HAVE TO TOGGLE THE HEADLIGHT CONTROL OFF AND ON SEVERAL TIMES BEFORE THEY TURN ON AGAIN, WHICH LEAVES US DRIVING IN COMPLETE DARKNESS AND IT'S A BIG SAFETY HAZARD! AGAIN, BRAND NEW BULBS HAVE THIS ISSUE, TOO. GETTING THE WHOLE HEADLIGHT AND COMPUTER BEHIND IT REPLACED IS VERY EXPENSIVE. THIS IS A BIG SAFETY ISSUE AND IT HAS BEEN HAPPENING AND GETTING WORSE FOR OVER A YEAR.”

“THE PASSENGER SIDE FRONT HEADLIGHT STARTED GOING OFF AUTOMATICALLY AFTER A WHILE OF TURNING ON. IF I TURN IT OFF AND ON AGAIN, IT LIGHTS UP AND THEN FIRST DIMS AND THEN TURNS OFF ON ITS OWN. THE LIGHTS HAVE BEEN REPLACED AND IT DID NOT SOLVE THE PROBLEM. THIS IS VERY DANGEROUS FOR NIGHT TIME DRIVING AS THE DRIVERS WILL NEVER KNOW WHEN THE HEADLIGHTS WILL GO OUT. THIS IS NOT A RANDOM INCIDENT; IT IS ONE OF THE MOST COMMON PROBLEMS OF GEN 2 PRIUS (04-09) THAT I FOUND ONLINE. I AM ATTACHING A DOCUMENT THAT LISTS SOME ONLINE FORUMS WHERE OTHER PRIUS OWNERS HAVE REPORTED SIMILAR PROBLEMS. TOYOTA SETTLED A LAWSUIT FOR 06-09 PRIUS, YET THERE IS NO RECALL FOR THE HEADLIGHT ISSUE OF GEN 2 PRIUS.”

“WHILE DRIVING DRIVER SIDE HEADLIGHT WILL GO OUT, FOLLOWED BY PASSENGER HEADLIGHT. BOTH WILL RETURN ON WHEN THE HEADLIGHTS ARE TURNED OFF THEN ON AGAIN, ONLY TO OCCUR AGAIN WITHIN 10 MINUTES. BOTH HEADLIGHTS HAVE BEEN REPLACED WITHIN THE LAST 10 DAYS.”

“HEADLAMPS RANDOMLY TURN OFF WHILE DRIVING, BUT USUALLY ONLY ONE AT A TIME. LAST NIGHT (12/18/18), BOTH LIGHTS WENT OUT AT THE SAME TIME AND I WAS UNABLE TO SEE THE ROAD AS IT WAS POORLY LIT. WHEN LAMPS DO TURN OFF WHILE DRIVING, TURNING THEM OFF AND ON A FEW TIMES WILL USUALLY GET THE IT TO COME BACK ON. THIS IS DEFINITELY A HAZARD AND A RECALL IS ABSOLUTELY REQUIRED.”