TL* THE CONTACT OWNS A 2003 MERCEDES BENZ S430. THE CONTACT STATED THAT THE VEHICLE WAS EMITTING SMOKE OUT OF THE TRUNK AND HE COULD SMELL BURNING PLASTIC. THE CONTACT ALSO STATED THAT THE A PSE PUMP CONTINUED TO RUN AFTER THE VEHICLE WAS SHUT OFF, CAUSING IT TO OVER HEAT AND MELT THE WIRING HARNESS. IN ADDITION, THE CONTACT STATED THAT HE HAD TO DISCONNECT THE PUMP FROM THE WIRING HARNESS IN ORDER TO STOP THE SMOKING. THE VEHICLE WAS TAKEN TO THE DEALER, WHO DIAGNOSED THAT THE ELECTRICAL RELAY PUMP MALFUNCTIONED AND NEEDED TO BE REPLACED. THE MANUFACTURER WAS MADE AWARE OF THE FAILURE AND OFFERED NO ASSISTANCE. THE VEHICLE WAS NOT REPAIRED. THE FAILURE AND CURRENT MILEAGES WERE 78,000.