There are 3 owner-reported electrical system complaints for the 2011 Mercury Marinerin NHTSA's database. These are unverified consumer reports and may not reflect confirmed defects.
I WAS DRIVING 65 MPH ON THE FREEWAY WHEN MY ENGINE STALLED. I COSTED TO THE SIDE, TURNED OFF MY CAR, AND RESTARTED THE ENGINE. MY SUV RAN NORMAL FOR THE NEXT 5 MILES BEFORE THE SAME PROBLEM OCCURRED. THIS TIME I WAS AT A LIGHT AND WAS ABLE TO STOP AND RESTART THE ENGINE. THE ENGINE STARTED, BUT WAS RUNNING SLOW AND THE GAS PEDAL WAS NON RESPONSIVE. I COASTED TO A SIDE STREET WHERE I TURNED OFF THE ENGINE. ONCE I TRIED TO RESTART THE ENGINE, IT TOOK ABOUT FOUR TIMES LONGER TO START THAN NORMAL. I PUT THE SUV IN DRIVE AND IT JUMPED SLOWLY AT A COSTING PAST WITH EVERY FLUCTUATION OF THE ENGINE RPM PACE. I WOULD HAVE HAD AN ACCIDENT IF THIS WOULD HAVE OCCURRED ON MY WAY HOME FROM WORK IN TRAFFIC. THANKFULLY IT WAS DURING THE DAY WITH LITTLE TRAFFIC. THE DEALERSHIP SEEMS TO THINK IT IS A PROBLEM WITH AN ELECTRONIC THROTTLE BODY. I WILL BE TRADING MY MARINER IN FOR A DIFFERENT CAR BECAUSE I DO NOT FEEL SAFE DRIVING THE SUV. I AM FORTUNATE THAT MY SUV STALLING DID NOT CAUSE AN ACCIDENT. HOWEVER, I'M SURE THERE ARE OTHERS WHO ARE LESS FORTUNATE. PLEASE HELP BY FORCING FORD TO RECALL THESE VEHICLES AND REPLACE THIS PART BEFORE THIS ISSUE CAUSES A FATAL ACCIDENT. THANK YOU.
ON JUNE 6TH, IS AS GOING APPROXIMATELY 35 MILES PER HOUR WHEN THE CAR WENT INTO IDLE MODE. I PULLED TO THE SIDE OF THE ROAD AND THE CAR RESTARTED AFTER CRANKING IT SEVERAL TIMES. THE PROBLEM CONTINUED BUT ONLY WHEN TRAVELING AT LOWER SPEEDS. I MADE POINT OF TRAVELING THE BACK ROADS WHEN POSSIBLE. ON THE 13TH OF AUGUST, I WAS ON THE FREEWAY WHEN IT HAPPENED. I WAS ONLY ABLE TO TRAVEL A FEW 100 FEET AND IT CONTINUED THIS WAY TILL I GOT HOME GOING THE BACK ROADS AGAIN. THE CAR HAS SAT THERE EVER SINCE. MY HUSBAND HAS BEEN OUT OF TOWN FOR THREE MONTHS AND RETURNED THAT NIGHT. HE HAD THE CODES CHECKED AND THEY READ P2111 AND P2112. HE DID RESEARCH THE PROBLEM AND CAME UP WITH MANY COMPLAINTS OF DEFECTIVE THROTTLE BODY. *TR
IF THIS IS THE WRONG FORUM FOR THIS ISSUE, PLEASE LET ME KNOW. WE PURCHASED A 2008 MERCURY MARINER NEW, SO THE CAR IS LESS THAN 3 YEARS OLD AND WHILE GARAGE KEPT THE VEHICLE MILEAGE EXCEEDS THE NEW CAR WARRANTY. WE TOOK THE CAR BACK TO THE DEALERSHIP AND WERE CHANGED $118.00 TO DIAGNOSE A PROBLEM WITH THE BACKUP SYSTEM/SENSORS AND WERE INFORMED THAT THE SENSORS WERE FINE BUT THE ELECTRONIC DEVICE WHICH CALCULATES DISTANCE WAS BAD, TO REPLACE AN ADDITIONAL $500.00. WHY HAVE BACKUP SYSTEM/SENSORS ON A VEHICLE IF THE LIFE OF THE ELECTRONICS IS SO SHORT IF THIS SAFETY DEVICE IS INTENDED TO PROVIDE BENEFIT, OURS IS NOW PERMANENTLY DISABLED. I DON'T UNDERSTAND WHY "SAFETY" EQUIPMENT IS NOT COVERED FOR LONGER PERIODS OF TIME. REGARDS, *TR
Complaints are unverified consumer reports submitted to NHTSA. A high complaint count may reflect vehicle popularity, not defect severity. Data sourced from NHTSA public records.
Data synced from NHTSA on Apr 26, 2026