NHTSA Complaint #10505145 — 2009 TOYOTA COROLLA

I HAVE A LOUD KNOCK/RATTLE NOISE ON COLD STARTUP ON MY 2009 COROLLA. I THOUGHT IT WAS THE BELT. BUT, AFTER REPLACING BELTS ON SCHEDULE MAINTENANCE, PROBLEM STILL PERSIST. ON SEVERAL OCCASIONS, THE ENGINE WOULD START BUT RUNNING IN ABNORMAL SOUND WITH CONSTANT BIG VIBRATIONS. LOOKING UP ONLINE TO SEE IF THIS IS A COMMON PROBLEM FOR THE 2009 COROLLA, I AM SURPRISED THIS IS WIDE SPREAD PROBLEM AND THAT TOYOTA KNOWS ABOUT IT AND EVEN ISSUED THE REPAIR THE BULLETIN. ACCORDING TO THE BULLETIN, THIS NOISE WAS CAUSED BY THE DEFECTIVE CAMSHAFT TIMING GEAR ASSEMBLY, WHICH AFFECT 2009-2010 COROLLA AND MATRIX. I DON'T KNOW HOW ANY OTHER OWNER WILL HAVE THE SAME PROBLEMS, AND THAT SOMEDAY IT MIGHT CAUSE BIG ACCIDENT WHEN THE ASSEMBLY FAILED WHILE DRIVING ON THE FREEWAY. I COULD NOT UNDERSTAND WHY TOYOTA DID NOT ISSUE A RECALL WHEN THEY KNEW THERE IS THIS PROBLEM ON THE PARTS. I SINCERELY HOPE NHTSA WILL INVESTIGATE THIS ISSUE. *TR