NHTSA Complaint #10764570 — 2009 BMW 535I

WHILE DRIVING "ENGINE FAILURE, REDUCE POWER" LIGHT CAME ON, POWER ON ENGINE REDUCED BUT DRIVABLE. WHEN CAR SHUT DOWN AND RESTARTED LIGHT GOES OFF BUT IF STEPPING ON THE GAS HARD THE LIGHT COMES BACK WITH ENGINE HAVING REDUCED POWER. THIS WAS REPAIRED TWICE, LAST BY BMW ON 7/29/13, THEY REPLACED VANS SOLENOIDS (INTAKE AND EXHAUST) AND REPROGRAMED THE TRANSMISSION. AT THAT TIME THEY TOLD ME IF THE PROBLEM RETURNS THE TRANSMISSION MAY NEED TO BE REPLACED. READING THROUGH FORUMS AND THE WEB I CAME UPON MANY COMPLAINTS FOR THE SAME PROBLEM IN WHICH DEALERS STATED DIFFERENT ROOT CAUSES, MANY SOLUTIONS PROPOSED BUT OFTEN PROBLEM RETURNS. I BELIEVE THIS IS DESIGN FLAW WITH THIS CAR AND SHOULD BE INVESTIGATED.