NHTSA Complaint #10396423 — 2009 MERCURY MARINER

ON MULTIPLE OCCASIONS STARTING IN JAN 2011, THE VEHICLE WOULD HESITATE TO SELECT A GEAR AND ACCELERATE WHILE TRYING TO LEAVE A STOP LIGHT OR SIGN, OR AFTER MAKING A TURN LEAVING A FEW SECOND LULL WHERE THE VEHICLE IS UNRESPONSIVE. THE PREVIOUS TRANSMISSION SOFTWARE RE-FLASH WAS PERFORMED AGAIN EVEN THOUGH DEALER WAS UNABLE TO REPLICATE PROBLEM. ISSUE STILL PERSISTS OCCASIONALLY, AS WELL AS A NEW SYMPTOM SINCE MARCH (23,000 MILES). NOW, SOMETIMES WHEN COMING TO A STOP THE VEHICLE WILL STALL AS THOUGH THE TRANSMISSION DID NOT DOWNSHIFT TO A LOWER GEAR. PLACING THE VEHICLE IN NEUTRAL AND RESTARTING ALLOWS CONTINUED OPERATION. THESE ISSUES COMBINED WITH INCONSISTENCY IN SHIFTING PERFORMANCE AS NOTED BY MANY OTHERS LEAD ME TO BELIEVE THERE IS STILL A COMPONENT AND/OR SOFTWARE PROBLEM WITH THIS 6F35 TRANSMISSION. HOWEVER, SINCE THE PROBLEM CANNOT BE CONSISTENTLY REPLICATED BY THE DEALER THEY ARE UNSURE OF A REMEDY.