I PURCHASED THE TOYOTA CERTIFIED PRE-OWNED PRIUS IN JULY 2013. I FIRST HAD AN ISSUE WITH THE HEADLIGHT IN AUGUST 2014 WHEN THE HEADLIGHT KEPT COMING LOOSE FROM IT'S CASING. THIS HAPPENED AGAIN ON APRIL 24, 2015 ONLY THIS TIME THE HEADLIGHT FELL TO REST ON SOME PLASTIC AND CAUSED THE HEADLIGHT ASSEMBLY TO START ON FIRE. NO ONE WAS INJURED. I USED A FIRE EXTINGUISHER TO PUT OUT THE FIRE. I BELIEVE THE SOCKET PART OF THE HEADLIGHT ASSEMBLY WAS DEFECTIVE. *TR