ELECTRICAL SAFETY HAZARD THAT COULD LEAD TO FIRE. LEFT REAR TAILLIGHT ASSEMBLY UNIT MELTED DUE TO IMPROPER GROUND DUE TO FAULTY WIRING HARNESS. TALKED WITH MERCEDES DEALERSHIP AND WAS ADVISED THAT THIS IS A COMMON PROBLEM WITH THIS CAR. I ASKED IF THERE WAS A RECALL AS THIS IS A MAJOR SAFETY HAZARD AND WAS ADVISED THAT NO RECALL HAS BEEN ISSUES. WAS TOLD THAT THIS PROBLEM IS SO COMMON THAT MERCEDES HAS A REPAIR KIT BUT WANTS ME TO PAY $200 TO HAVE THE SAFETY ISSUE FIXED. MERCEDES REFUSES TO DO ANYTHING UNTIL SOMEONE IS KILLED AND FORCED TO ISSUE A SAFETY RECALL TO FIX THIS DEFECT. IF YOU GOOGLE 2009 C300 BRAKE LIGHT RECALL YOU WILL FIND COUNTLESS PEOPLE WHO HAVE THE SAME ISSUE INCLUDING IDENTICAL PHOTOS OF THE MELTED BULB ASSEMBLY UNIT. I WOULD HOPE FOR THE SAFETY OF EVERYONE THAT THE NTSB COULD REVIEW THIS ISSUE FURTHER BEFORE SOMEONE IS SERIOUS INJURED. *TR