NHTSA Complaint #10453083 — 2007 LEXUS IS 250

AT APPROXIMATELY 40,000 MI. MY 2007 LEXUS IS 250 DEVELOPED A PROBLEM OF STALLING, SHAKING, MISFIRING AND THE VSC LIGHT, TRACTION SKID LIGHT AND CHECK ENGINE LIGHTS ALL COME ON. THE DEALERSHIP INITIALLY TRIED TO TELL ME THAT THE GAS CAP WAS NOT ON TIGHT (NOT TRUE) AND THEN THEY TRIED TO TELL ME THAT JUST TURNING THE LIGHTS OFF WOULD FIX THE PROBLEM (ALSO NOT TRUE). AFTER I INSISTED THAT THE PROBLEM WAS SERIOUS AND DANGEROUS, THE TECHNICIAN DROVE THE CAR HOME AND HAD THE SAME PROBLEM THAT I HAD BEEN EXPERIENCING. FINALLY, THE DEALERSHIP DECIDED THAT CARBON HAD BUILT UP ON THE VALVES AND THAT WAS CAUSING THE ENGINE TO MISFIRE AND ALL THE LIGHTS TO COME ON. THE DEALERSHIP SENT THE VALVES TO A SHOP AND HAD THEM CLEANED AND GROUND DOWN. THE SERVICE MANAGER TOLD ME THAT THERE WAS A DESIGN FLAW AND THIS IS WHAT LEXUS TOLD THEM TO DO TO FIX IT. NOW, HERE I AM AT 81,000 MILES AND THE SAME THING HAPPENED AGAIN YESTERDAY WITH THE CAR SHAKING, STALLING, MISFIRING AND THE VSC LIGHT, TRACTION SKID LIGHT AND CHECK ENGINE LIGHTS COMING ON. IT HAS BEEN ANOTHER 40,000 MILES AND THE CARBON HAS BUILT UP AGAIN. I HAVE READ ON THE INTERNET THAT MANY OTHER PEOPLE HAVE HAD THE SAME PROBLEM. *TR