FaultScore

2010 Mercury Mariner engine problems

63 of the 394 complaints about the 2010 Mercury Mariner are about the engine — 16% of everything reported for this model year. Half of the failures with a mileage on record happened before 52,000 miles.

C

63

Complaints

0

Crashes

1

Fires

1

Injuries

Exactly what failed

Engine 61 96.8%
Engine AND Engine Cooling 2 3.2%

Engine & Cooling across every Mercury Mariner year

2005 17 9.2%
2006 10 5.4%
2008 20 10.9%
2009 60 32.6%
2010 63 34.2%
2011 14 7.6%

What owners said

Filed with NHTSA, in their own words.

Spring Lake, NC

ENGINE

Me and my wife purchased a vehicle from a private seller to use for personal commute. A month later we started to notice more issue were occurring with the car then stated from the seller. I took it to an auto body shop to get it inspected and possibly serviced and upon that inspection the clerk stated that there was a milage adjustment done to the vehicle. We contacted the seller to try and return the vehicle and receive our money back, but the dealer refused and requested us to resell it.

NHTSA complaint #11685632 — an unverified report by a vehicle owner.

Long Beach, CA

ENGINE

When the weather is hot (close to 100 degrees or more) and I am driving with the a/c - my vehicle on 3 occasions will not start after parking the vehicle and trying to restart it. The red padlock sign blinks and it won't start. At first it is trying to turnover but then will continually sound worse and all other warning lights go haywire. I leave the car alone for half a day and it starts up again like nothing happened. On the fourth occasion, the car stopped while driving, just a quiet shutdown and the car glided. This time it did not work for over 24 hours and then started up again like nothing happened. Multiple mechanics and also the dealership cannot figure out the problem because by the time i have it towed to shop, it works again. They did a full check on the car and cannot find anything wrong and there were no diagnostic codes. This issue happens when the weather is hot and poses a safety concern as now it is shutting off while driving and I become stranded each time. (First incident happened 8/25/18, last incident 5/14/22) Total of 4.

NHTSA complaint #11467626 — an unverified report by a vehicle owner.

Erie, PA

ENGINE

I was driving when it felt like the vehicle was reving in park then the "wrench" icon appeared on my dash. I went a couple blocks & my vehicle felt like it wasn't shifting automatically as it should. I pulled over & turned it off. It started right back up with no lights on, I went half a block & stopped at a stop sign but while stopped the engine reved up. I was worried I was going to be in an accident. Then the "wrench" light came back on, since I was close to home I figured I'd just try to get home. About another block, the check engine light came on & was making strange noises. I kept my vehicle at about 5-10 mph & got it home. My car was very jerky.

NHTSA complaint #11429049 — an unverified report by a vehicle owner.

at 142,551 miles Woodbury, MN

ENGINE

THE VEHICLE WAS IN MOTION AT A STOPLIGHT. THE LIGHT HAD TURNED GREEN, AND THE VEHICLE WAS BREAKING TO STOP BEHIND THE FIRST VEHICLE. I PRESSED THE GAS PEDAL TO FOLLOW THE FIRST VEHICLE AND THE CAR STALLED. THE CAR COULD NOT BE TURNED BACK ON OR PUT IN MOTION. THERE WAS NO INDICATION OF A PROBLEM PRIOR TO THIS THROTTLE BODY FAILURE. THE CAR WAS PUSHED OFF THE ROAD BY 3 PEOPLE AND INTO A NEARBY PARKING LOT. THE PROBLEM THAT MADE THE VEHICLE UNSAFE WAS A DEFECTIVE FORD THROTTLE BODY. THE REFERENCE CONSUMER SATISFACTION PROGRAM 13N03. I RECEIVED THE RECALL NOTICE JUNE 2014, BUT FORD ONLY SUGGESTED A RECALIBRATION (NOT REPLACEMENT). THE RECALIBRATION WAS COMPLETED AT FORD AUTONATION ON JUNE 23, 2014. FORD HAD ESTIMATED A THROTTLE BODY REDUCTION IN MOVABILITY AND NOT FAILURE. THE MILEAGE OF THIS MERCURY MARINER ON THE DATE OF REPAIR WAS 142551 AND THE IN-SERVICE DATE, 06/18/2010. THEREFORE, THE REIMBURSEMENT SHOULD BE COVERED UNDER FORD'S EXTENDED WARRANTY OF 150000 MILES/10 YEARS. THE REPAIR WAS COMPLETED 06/08/2020. TEN DAYS PRIOR TO THE EXPIRATION OF THE EXTENDED WARRANTY. FORD CLAIMS THEY WILL NOT REIMBURSE FOR THE THROTTLE BODY FAILURE. THIS WAS WELL-DOCUMENTED IN THE PREVIOUS CLAIM 13N03 AND THIS CASE SHOULD BE REOPENED, BASED ON THE FATALITY POSSIBILITY OF A THROTTLE BODY FAILURE WITH THE ORIGINAL PART THAT CAME WITH THE VEHICLE, WHICH WAS ALSO RE-CALIBRATED PER FORD'S RECALL IN 2014. THIS INCIDENT PROVES THAT FORD'S RE-CALIBRATION DID NOT PREVENT FAILURE OF THE THROTTLE BODY. ASKING FOR A RECALL FOR THE THROTTLE BODY FOR THE SIMILAR MAKES AND MODELS STILL IN CIRCULATION AS IT'S A SAFETY HAZARD AND ALSO REIMBURSEMENT FOR THIS SERVICE FOR VEHICLES THAT HAD IT COMPLETED.

NHTSA complaint #11328932 — an unverified report by a vehicle owner.

at 189,542 miles Grand Island, NE

ENGINE

HAVING TWO ISSUES. THE FIRST ONE IS THE CHECK FUEL INTAKE WARNING LIGHT COMES ON AND MY CHECK ENGINE LIGHT STAYS ON. THIS APPEARS TO BE CAUSING MY CAR TO CUT OUT DANGEROUSLY AT INTERSECTIONS AS WELL AS THE WRENCH LIGHT TO COME IN AND MY CAR 'LIMPS' HOME.

NHTSA complaint #11102905 — an unverified report by a vehicle owner.

at 69,965 miles Crestview, FL

ENGINE

CAR STOPPED RUNNING WRENCH LIGHT CAME ON STARTED MOTOR PUT IT IN GEAR TRIED TO GO REGULAR PACE CAR DID NOT GO IT IS VERY SLOW NO GAS PEDDLE TURNED IT OFF LET SET FOR 2 HRS. STARTED BACK UP RUNS OK BUT CHECK ENG. LITE CAME ON CALLED DEALER

NHTSA complaint #11000721 — an unverified report by a vehicle owner.

at 100,000 miles East Lansing, MI

ENGINE

WHILE DRIVING THIS VEHICLE WE HAVE STALLING ISSUES. THE ISSUES HAVE HAPPENED WHILE DRIVING THE CAR ON THE ROAD WHILE MAKING TURNS AND STOPPED WAITING FOR A LIGHT, THE VEHICLE STOPS RUNNING WITHOUT WARNING. THE CAR WILL RESTART AFTER YOU HAVE PLACED THE CAR IN PARK AND RESTART. THE DEALERSHIP HAS NOT BEEN ABLE TO DUPLICATE THIS PROBLEM.

NHTSA complaint #10945538 — an unverified report by a vehicle owner.

at 80,000 miles Camden, NJ

ENGINE

TL* THE CONTACT OWNS A 2010 MERCURY MARINER. WHILE DRIVING APPROXIMATELY 50 MPH, AN UNKNOWN WRENCH WARNING INDICATOR ILLUMINATED. THE ACCELERATOR PEDAL WAS DEPRESSED, BUT THE VEHICLE FAILED TO ACCELERATE. AFTER WAITING A FEW MOMENTS, THE VEHICLE RESTARTED. THE FAILURE RECURRED NUMEROUS TIMES. THE VEHICLE WAS NOT DIAGNOSED OR REPAIRED. THE MANUFACTURER WAS MADE AWARE OF THE FAILURE. THE FAILURE MILEAGE WAS APPROXIMATELY 80,000.

NHTSA complaint #10935491 — an unverified report by a vehicle owner.

EL Paso, TX

ENGINE

WHILE DRIVING NORMALLY SUDDENLY IT LOOSES POWER AND THROTTLES BEFORE TURNING OFF. IT IS A HAZARD BECAUSE I MAY BE HIT IF IT HAPPENS IN THE FREEWAY.

NHTSA complaint #10873133 — an unverified report by a vehicle owner.

at 45,000 miles Miami, FL 2 injured

ENGINE

I SUFFERED AN ACCIDENT BECAUSE WHILE DRIVING IN A HIGHWAY, I COULD NOT STEER THE WHEEL AND THE ENGINE STOP WORKING. I WROTE BEFORE BECAUSE OF WHAT HAPPENED AND HAVE NOT RECEIVED AN ANSWER. WHAT CAN I DO? THANK YOU

NHTSA complaint #10821954 — an unverified report by a vehicle owner.

at 130,980 miles Upper Marlboro, MD

ENGINE

TL* THE CONTACT OWNS A 2010 MERCURY MARINER. WHILE DRIVING AT APPROXIMATELY 45 MPH, THE MAINTENANCE WARNING LIGHT ILLUMINATED AND THE VEHICLE JERKED VIOLENTLY. IN ADDITION, THE VEHICLE FAILED TO ACCELERATE WHEN THE ACCELERATOR PEDAL WAS DEPRESSED. THE FAILURE RECURRED INTERMITTENTLY. THE VEHICLE WAS TAKEN TO THE DEALER, WHO INSPECTED THE VEHICLE BUT WAS UNABLE TO DIAGNOSE THE FAILURE. AFTER LEAVING THE DEALER, THE MAINTENANCE AND THE ENGINE WARNING LIGHT ILLUMINATED. THE VEHICLE WAS NOT REPAIRED. THE MANUFACTURER WAS NOT MADE AWARE OF THE FAILURE. THE FAILURE MILEAGE WAS 130,980.

NHTSA complaint #10759606 — an unverified report by a vehicle owner.

at 78,000 miles Lynn Haven, FL

ENGINE

VEHICLE SURGES WILDLY AT IDLE SPEEDS IN TRAFFIC. VEHICLE STALLS OUT WHILE DRIVING REGULAR HIGHWAY SPEED, SURGES WILDLY WHILE DRIVING, RPM SPIKES DRASTICALLY WHILE DRIVING AND AT IDLE. STALLS AND SURGES BOTH WHILE ENTERING TRAFFIC FROM A STOPPED POSITION AND WHILE DRIVING AT REGULAR PACE. STRUGGLES TO CRANK AFTER FUELING THE VEHICLE. SPITS AND SPUTTER AND SHAKES WHILE AT IDLE....UPDATED10/20/15

NHTSA complaint #10730299 — an unverified report by a vehicle owner.

at 52,000 miles Alpharetta, GA

ENGINE

TL* THE CONTACT OWNS A 2010 MERCURY MARINER. WHILE DRIVING AT APPROXIMATELY 75 MPH, THE VEHICLE SUDDENLY STALLED. THE VEHICLE WAS RESTARTED, BUT THE FAILURE RECURRED. THE VEHICLE WAS NOT DIAGNOSED OR REPAIRED. THE MANUFACTURER WAS NOTIFIED OF THE FAILURE. THE FAILURE MILEAGE WAS 52,000.

NHTSA complaint #10726561 — an unverified report by a vehicle owner.

at 73,400 miles Mount Vernon, AL

ENGINE

THE CAR WOULD NOT ACCELERATE AND THE WRENCH SYMBOL ILLUMINATED. I HAD TO PULL OVER TURN OFF THE CAR AND RESTART IT.

NHTSA complaint #10693356 — an unverified report by a vehicle owner.

at 39,189 miles Charlotte, NC

ENGINE

VEHICLE ELECTRONIC THROTTLE BODY (ETB) WAS REPLACED AT VETERANS FORD DEALERSHIP IN TAMPA, FL DUE TO THIS PART SEVERELY EFFECTING ABILITY OF THE VEHICLE TO RUN PROPERLY (SEVERAL TIMES). CUSTOMER PAID FOR THIS REPAIR. SOMETIME AFTER 3/4/14 WHEN NHTSA COMPLETED THEIR INVESTIGATION, WE RECEIVED A NOTICE THAT FORD WAS REPLACING THIS ITEM. SINCE WE ALREADY PAID FOR THE REPAIR ($381.32) AT A FORD DEALERSHIP, WE TRIED TO GET THE REIMBURSEMENT THAT FORD OWES US. WE WERE INFORMED WE HAD TO HAVE THE ORIGINAL RECEIPT, WHICH TO THIS DAY IS STILL PACKED UP IN STORAGE IF WE HAVE IT AT ALL BECAUSE WE MOVED FROM FL TO NC AND ARE STILL INVOLVED IN BUYING A NEW HOME. THE BOTTOM LINE IS FORD (CORP) IS REFUSING TO HONOR THEIR AGREEMENT TO REIMBURSE CUSTOMERS. THE CRAZIEST PART OF THIS WHOLE DILEMMA IS THAT FORD HAS AND CONTROLS 100% OF THE INFORMATION NEEDED TO PROCESS OUR REIMBURSEMENT, BUT ABSOLUTELY REFUSES TO DO SO WITHOUT THE ORIGINAL RECEIPT. I COULD UNDERSTAND IF WE HAD THIS REPAIR DONE AT SOME UNRELATED, THIRD PARTY SERVICE FACILITY. HOWEVER, WE WENT TO A FORD DEALERSHIP AND THEY HAVE RECORD OF COMPLETING THE REPAIR AND US PAYING THEM FOR THE REPAIR. SO AGAIN, FORD HAS ALL THE INFORMATION (PROOF) IN THEIR POSSESSION TO TAKE CARE OF THIS REIMBURSEMENT, BUT REFUSES TO DO SO. I HAVE CALLED THE CUSTOMER (DIS)SATISFACTION DEPARTMENT AT FORD CORPORATE, BUT THAT IS LIKE TALKING TO A BRICK WALL AS FAR AS ANYONE HAVING IN COMMON SENSE, ACCOUNTABILITY OR DECENCY TO DO THE RIGHT THING (CERTAINLY ANY KIND OF GOOD WILL IS LACKING IN THAT ORGANIZATION). SO HERE I AM HAVING TO COMPLAIN TO THE NHTSA TO GET FORD TO DO WHAT THEY PROMISED IN THE FIRST PLACE. I LOOK FORWARD TO A TIMELY REPLY LETTING ME KNOW YOU GUYS HAVE THIS HANDLED. ADDITIONALLY, FORD SHOULD BE REPRIMANDED SEVERELY FOR SUCH [XXX] BEHAVIOR AND ATTITUDE. MAYBE A CONSUMER REPORTER NEEDS TO GET INVOLVED IN ALL THIS. THANKS. INFORMATION REDACTED PURSUANT TO THE FREEDOM OF INFORMATION ACT (FOIA), 5 U.S.C. 552(B)(6).

NHTSA complaint #10691772 — an unverified report by a vehicle owner.

at 63,968 miles Okemos, MI

ENGINE AND ENGINE COOLING

THIS VEHICLE WAS PURCHASED USED FROM A LINCOLN MERCURY DEALER IN EARLY JULY, 2014. MILEAGE WAS APPROXIMATELY 63,500 MILES. AT THE TIME THE AIR CONDITIONING WORKED FINE. EARLY IN AUGUST WE NOTICED THE AIR CONDITIONING WAS NO LONGER COOLING THE VEHICLE. THERE WAS AN OUTSTANDING RECALL --- 14S05 -- RELATED TO THE POWER STEERING. I TOOK THE VEHICLE TO A LOCAL FORD DEALER TO HAVE THE RECALL WORK DONE. AS A SIDE ISSUE I ASKED THAT THE A/C BE CHECKED. TO MY HORRIFIED SURPRISE I WAS TOLD A "DESICCANT BAG" IN THE A/C ACCUMULATOR HAD BURST AND THE TINY DESICCANT PARTICLES HAD SPREAD THROUGHOUT THE SYSTEM, CLOGGING UP VARIOUS PARTS AND CAUSING THE SYSTEM TO FAIL. THESE PARTICLES CANNOT BE FLUSHED OUT COMPLETELY AND THE ONLY FIX IS TO REPLACE ALL OF THE COMPONENTS OF THE A/C, FOR $2700!!!!! BECAUSE OF THE COST I HAVE NOT HAD THE WORK DONE. THE DEALER PEOPLE ADVISED ME TO FILE A COMPLAINT WITH NHTSA AND TO CONTACT FORD CUSTOMER RELATIONS. I HAVE DONE THAT, BUT NO RELIEF HAS BEEN OFFERED. I WANT TO REGISTER MY OUTRAGE AT THIS SITUATION PARTICULARLY AS A BASIC GOOGLE SEARCH:" FORD ESCAPE/MERCURY MARINER AIR CONDITIONING PROBLEMS OR DESICCANT BAG" REVEALS MANY HUNDREDS, PROBABLY THOUSANDS OF SIMILAR COMPLAINTS (REPAIR COSTS UP TO $4000!) AND SHOW THAT FORD HAS BEEN AWARE OF THIS ISSUE FOR AT LEAST A COUPLE OF YEARS BUT HAS TAKEN NO ACTION. I URGE YOU TO HAVE FORD RECALL THE AFFECTED VEHICLES AND REPAIR THEM AT FORD'S EXPENSE. THANK YOU.

NHTSA complaint #10628781 — an unverified report by a vehicle owner.

at 59,800 miles SAN Antonio, TX

ENGINE

DURING NORMAL DRIVING ON THE HIGHWAY THE ENGINE LOST POWER, THE WRENCH LIGHT ON THE DASH LIT. THE VEHICLE SPUTTERED AND SUDDENLY DECREASED IN SPEED, MAKING FOR HAZARDOUS DRIVING CONDITIONS. I MOVED TO THE SIDE OF THE 4 LANE HIGHWAY AND INTO THE BREAKDOWN LANE. I PLACED THE VEHICLE IN PARK, THE ENGINE IDLED ROUGHLY. I TURNED OFF AND RESTARTED THE CAR AND THE SYMPTOMS WERE GONE. A WEEK LATER THE SAME TROUBLE RETURNED. PLEASE PRESS FMC TO RESOLVE AT NO-COST TO CONSUMER THE OBVIOUS AND DANGEROUS MANUFACTURE DEFECT WITH A RECALL ON THE AFFECTED PARTS/SYSTEM.

NHTSA complaint #10611368 — an unverified report by a vehicle owner.

at 56,000 miles Ellicott City, MD

ENGINE

WAS GOING HOME FROM WORK, ABOUT 20 MPH, CAR SPUTTERED AND STOPPED ACCELERATING ON RAMP, ENGINE AND WRENCH LIGHT CAME ON. THIS HAD HAPPENED BEFORE SO I KNEW TO TURN THE CAR OFF AND BACK ON TO GET MY CAR TO WORK AGAIN. BUT ALAS, I AM DRIVING AT ABOUT 30 MPG FOR ONLY 2 MINUTES AND IT HAPPENS AGAIN! I WAS AGAIN ON ANOTHER RAMP, COMPLETELY BLOCKING TRAFFIC. THANK GOD I WAS NOT YET ON I-95 GOING AT A HIGH SPEED, OR EVEN WORSE WITH MY CHILD IN THE CAR. IF I EVER GET IN AN ACCIDENT WITH MY CHILD AND WE ARE INJURED BECAUSE OF THIS, MY FAMILY WILL SUE THE HECK OUT OF FORD. HAS TO CALL MY HUSBAND TO DRIVE THE CAR TO THE DEALER AFTER I PULLED OFF THE ROAD, I WAS SHAKING TOO BAD TO DRIVE.

NHTSA complaint #10610842 — an unverified report by a vehicle owner.

at 26,000 miles SAN Diego, CA

ENGINE

SLOWED TO MAKE A RIGHT HAND TURN INTO A PARKING LOT AND THE VEHICLE STALLED. THERE WAS NO WARNING OF AN IMPENDING STALL AND NO CONSOLE LIGHTS CAME ON OTHER THAN THE BATTERY LIGHT AND THE OIL LIGHT. THE INCIDENT DID NOT CREATE AN ERROR CODE IN THE COMPUTER SYSTEM AS I TOOK THE VEHICLE TO A FORD DEALERSHIP FOR SERVICE AND TO CHECK FOR ANY ISSUES WITH THE VEHICLE. FORD REPAIR SHOP FOUND NOTHING WRONG WITH VEHICLE UPON INSPECTION AND SAID THERE WAS NOTHING THEY COULD DO WITHOUT AN ERROR CODE IN THE COMPUTER SYSTEM. A STALLING INCIDENT OCCURRED AGAIN ON 3/18/14. IN THIS INSTANCE, AGAIN THERE WAS NO WARNING. I HAD JUST EXITED OFF OF THE HIGHWAY AND WAS ACCELERATING AFTER A STOP SIGN. THE VEHICLE STALLED IN THE MIDDLE OF THE ROAD. AGAIN, ONLY THE BATTERY LIGHT AND OIL LIGHT CAME ON.

NHTSA complaint #10575436 — an unverified report by a vehicle owner.

at 50,000 miles Sarasota, FL

ENGINE

TWICE IN TWO DAYS WHILE SPEEDING UP TO GET ON HIGHWAY MY MARINER LOOSES COMPLETE POWER AND THE WRENCH LIGHT COMES ON. LUCKY FOR ME IT WAS JUST BEFORE I WAS TURNING ON TO MERGE. SECONDS LATER IT WOULD HAVE BEEN A SERIOUS ACCIDENT, DUE TO THE SUDDEN STOP. I HAD TO SHUT THE CAR OFF AND START IT BACK UP IN ORDER TO GET GOING AGAIN. AFTER READING #PE13003 HAS BEEN FILE FOR THE SAME EXACT PROBLEM WITH SAME MAKE AND MODEL. SOMEONE BETTER REACT BEFORE SOMEONE LOOSES A LIFE. THIS IS HORRIBLE.

NHTSA complaint #10562355 — an unverified report by a vehicle owner.

at 17,000 miles Austin, TX

ENGINE

IN 2011, WHILE DRIVING AT APPROXIMATELY 60 MPH, I PRESSED THE GAS PEDAL AND COULD NOT ACCELERATE. THE ENGINE STAYED ON BUT I COULD NOT ACCELERATE. I WAS ABLE TO TURN ON THE HAZARDS AND PULL OFF TO THE SIDE OF THE HIGHWAY. I TURNED OFF THE VEHICLE AND AFTER WAITING 5 MINUTES I RESTARTED THE VEHICLE AND THE GAS PEDAL WAS WORKING. THEN AGAIN IN OCTOBER 2013, I WAS DRIVING APPROXIMATELY 30 MPH WHEN I LOST ACCELERATION CAPABILITY. THIS TIME THE THROTTLE BODY INDICATOR LIGHT WAS DISPLAYED. I TOOK THE VEHICLE IN TO A MECHANIC AND HE STATED THAT NOTHING REGISTERED ON THE COMPUTER AS A MALFUNCTION. HE LOOKED AT THE INTAKE VALVE AND COULD NOT SEE ANY BUILD-UP. IN JANUARY 2014 THIS HAPPENED 3 TIMES AND I WAS ABLE TO RESTART THE VEHICLE AND PROCEED. HOWEVER, ON JANUARY 11, 2014 AFTER THE MALFUNCTION THE VEHICLE DID NOT RESET IMMEDIATELY NOW THE CHECK ENGINE LIGHT IS DISPLAYED.

NHTSA complaint #10559637 — an unverified report by a vehicle owner.

at 50,000 miles Ellicott City, MD

ENGINE

WAS AT STOP LIGHT COMPLETELY STOPPED. WHEN THE LIGHT TURNED GREEN, I STEPPED ON THE ACCELERATOR AND MY CAR DID NOT ACCELERATE. THE ENGINE LIGHT AND ANOTHER LIGHT CAME ON. I TRIED MULTIPLE TIMES TO MOVE THE CAR AND NOTHING HAPPENED. I POWERED MY CAR DOWN AND RESTARTED IT, AT THIS TIME THE CAR STARTED MOVING AGAIN WHEN I PRESSED ON THE ACCELERATOR.

NHTSA complaint #10556990 — an unverified report by a vehicle owner.

at 47,000 miles Columbus, GA

ENGINE

WHILE DRIVING IN HEAVY TRAFFIC IN CENTER LANE OF THREE LINE HIGHWAY. VEHICLE SUDDENLY LOST POWER CREATING A EMERGENCY SITUATION. I HAD TO FORCE TRAFFIC TO ALLOW ME PROCEED TO SIDE OF THE ROAD. ENDANGERING MYSELF AND MY FAMILY, I SAT FOR ABOUT 30 MIN. BEFORE I COULD MOVE THE VEHICLE.

NHTSA complaint #10553301 — an unverified report by a vehicle owner.

at 40,000 miles College Station, TX

ENGINE

MY WIFE WAS DRIVING IN TOWN AND THE CAR BEGAN TO "BUCK" AND SLOW DOWN. AFTER A FEW MINUTES THE ACCELERATOR HAD NO EFFECT ON THE ENGINE. IT APPEARED TO BE IDLING ONLY. SHE PULLED OFF THE ROAD AND STOPPED THE CAR, WAITED A10 MINUTES OR SO, AND STARTED IT AGAIN. THERE WAS NO DIFFICULTY STARTING THE CAR, BUT AGAIN THE ACCELERATOR HAD NO EFFECT ON THE ENGINE SPEED. WE HAD THE CAR TOWED TO THE LOCAL DEALERSHIP WHERE IT WAS DIAGNOSED WITH A BAD THROTTLE BODY AND THROTTLE MOTOR. THE REPAIRS COST APPROXIMATELY $500.

NHTSA complaint #10550871 — an unverified report by a vehicle owner.

at 49,000 miles Kansas, OK

ENGINE

THE VEHICLE STARTED TO STALL WHEN THE ACCELERATOR PEDDLE WAS ENGAGED, AFTER TURNING VEHICLE OFF AND RESTARTING IT WOULD TRAVEL APPROXIMATELY 50 TO 100FT. BEFORE AGAIN STALLING.

NHTSA complaint #10548605 — an unverified report by a vehicle owner.

at 61,100 miles Natick, MA

ENGINE

WHEN DRIVING AT A SLOW SPEED OF 20-25 MPH, THE VEHICLE STOPPED ACCELERATING AND BUCKED A LITTLE. THE WRENCH (POWERTRAIN) SIGNAL LIGHT UP ON THE DASH, SO I PROCEEDED TO PULL OVER, PUT THE CAR IN PARK, AND SHUT IT OFF. AFTER A FEW MINUTES I TURNED IT ON AGAIN AND ALL SEEMED FINE, THOUGH THE CAR WAS NOW SLOW MOVING AND LESS SMOOTH THROUGH SHIFTING. THE SAME THING OCCURRED 9 DAYS LATER, WITH THE VEHICLE RESPONDING EVEN MORE SLOWLY AFTERWARDS.

NHTSA complaint #10548116 — an unverified report by a vehicle owner.

at 95,000 miles Charlotte, NC

ENGINE

I WAS DRIVING ALONG ON THE HIGHWAY (I-77 N) AND ALL OF A SUDDEN MY CAR STARTED TO JERK. THE WRENCH TOOL LIGHT LIT UP ON THE DASH BOARD AND THE CAR IMMEDIATELY BEGAN TO LOOSE SPEED. THE CHANGE IN POWER AND SPEED WAS QUICK AND I HAD TO QUICKLY CHECK THE SURROUNDING TRAFFIC AND PULL THE CAR OVER TO AVOID AND ACCIDENT. AFTER PULLING OVER TO THE SIDE OF THE ROAD I CUT THE CAR COMPLETELY OFF AND IT STARTED BACK UP. I TOOK THE CAR TO THE DEALER WHERE I PURCHASED THE CAR AND I WAS ADVISED TO REPLACE THE FILTER. I PURCHASED A FILTER FROM FORD AND MY CAR RAN SMOOTHLY FOR ABOUT 2 WEEKS. I WOULD PUSH ON THE ACCELERATOR BUT IT WOULD NOT ACCELERATE. EACH TIME THE WRENCH TOOL WOULD APPEAR AND THE ENGINE LIGHT WOULD COME ON. I HAVE LOST SPEED IN THE MIDDLE OF AN INTERSECTION. AFTER MY CAR STARTED TO CUT OFF AGAIN FOLLOWING THE INSTALLATION OF THE NEW FILTER I TOOK THE CAR BACK TO THE DEALER AND WAS INSTRUCTED TO PURCHASE THROTTLE BODY SPRAY. THEY CLEANED OUT THE THROTTLE BODY AND THE CAR DROVE FINE FOR A FEW DAYS UNTIL I BEGAN EXPERIENCING THE SAME PROBLEM. SOME TIMES I WOULD HAVE TO CUT MY CAR OFF A FEW TIMES AND RESTART IT ON ONE ROUND TRIP. I KEEP REGULAR MAINTENANCE ON THIS CAR, CHANGING THE OIL AND ROTATING THE TIRES, ETC. I PURCHASED THE CAR IN DECEMBER 2012 BECAUSE THE CAR I HAD OVER $2,500 OF NEEDED MAINTENANCE. I NEEDED A RELIABLE CAR TO GET AROUND AS THE PRIMARY TRANSPORTATION FOR MY FAMILY. I TOOK THE CAR BACK TO THE DEALER A FEW TIMES AND THEY EXPLAINED THE CODE AND EXPLANATION OF THE PROBLEM: TROUBLE CODE P2111, THROTTLE BODY ACTUATOR STUCK OPEN AND CLOSED. I REALLY HOPE THIS INVESTIGATION IS EXPEDITED AND THAT FORD RECALLS THE MERCURY MARINER 2010 DUE TO THE FAULTY THROTTLE BOTTLE. I HAVE HAD ZERO MAINTENANCE ISSUES WITH MY VEHICLE OTHER THAN THE THROTTLE BODY ISSUES.

NHTSA complaint #10546454 — an unverified report by a vehicle owner.

at 54,151 miles Arlington Heights, IL

ENGINE

I WAS ON A MAJOR EXPRESSWAY WHEN THE VEHICLE STARTING DECREASING SPEED. I WENT FROM 55 MPH TO 45 TO 35 TO 25 TO 15 TO 5 AND THE STOPPED. LUCKILY TRAFFIC WAS LIGHT AND WHEN THIS STARTED, I PULLED OVER TO THE SHOULDER OF THE ROAD WHICH WAS CLOSE TO AN EXIT. I SOMEHOW GOT THE SUV HOME, STARTING THE ENGINE, IT DYING OUT AND GOING A COUPLE OF FEET OVER AND OVER AGAIN. WE TOOK THE VEHICLE TO OUR AUTO SHIP AND THEY SAID THAT FORD HAD A PROBLEM WITH THE THROTTLE AND GAVE US A NORTH CAROLINA CONSUMERS COUNCIL ARTICLE. THEY DID NOT HAVE THE DIGITAL EQUIPMENT TO FIX AND REFERRED US TO FORD DEALERSHIP. FORD DEALERSHIP ADVISED IT WAS THE THROTTLE. I TALKED TO FORD CUSTOMER SERVICE AND THEY ADVISED THERE WAS NO RECALL AND THERE WAS NOTHING THEY COULD DO.I WE SPENT $362.56 ON THROTTLE AND TWO LETTERS LATER FORD WILL DO NOTHING SINCE THEY SAY WE DO NOT HAVE THE EXTENDED WARRANTY AND WE ARE BEYOND THREE YEARS/36,000 MILES. I WAS AFRAID WHEN THE CAR DIED OUT ON THE EXPRESSWAY.

NHTSA complaint #10546326 — an unverified report by a vehicle owner.

at 38,000 miles Jackson GAP, AL

ENGINE

WE WERE TRAVELING DOWN THE HIGHWAY AT 60 MPH WHEN THE ENGINE WENT DEAD LIKE THE SWITCH WAS CUT OFF. I TRIED TO RESTART THE ENGINE AND IT WOULD TRY TO START THEN GO DEAD. I DID THIS 10 TIMES AND IT FINALLY STARTED. I TOOK IT DIRECTLY TO THE LOCAL FORD DEALER. A COMPUTER CHECK DID NOT SHOW ANY PROBLEM. THE DEALER SAID HE DID NOT KNOW WHAT TO WORK ON AND SAID TO RETURN IT WHEN IT HAPPENS AGAIN.

NHTSA complaint #10542223 — an unverified report by a vehicle owner.

at 111,093 miles Vicksburg, MS

ENGINE

VEHICLE LOOSING POWER AND THE CHECK ENGINE LIGHT COMES ON, U WILL HAVE TO SHUT VEHICLE OFF AND RE CRANK IT.

NHTSA complaint #10538344 — an unverified report by a vehicle owner.

Other 2010 Mercury Mariner problems

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