399 of the
2,646 complaints filed about the Mercury Mountaineer
are about the transmission —
15% of everything owners reported.
The worst model year for it is 2002.
399
Complaints
15%
Share of all complaints
22
Crashes
7
Fires
Transmission & Drivetrain complaints by model year
The contact owns a 2007 Mercury Mountaineer. The contact stated that after shifting the transmission from park(P) to reverse(R), the vehicle failed to respond. The contact removed and reinserted the fob key in the ignition to correct the failure. The vehicle was taken to an independent mechanic, who diagnosed that an unknown transmission part needed to be replaced. The vehicle was not repaired. The mechanic instructed the contact to pull the park release lever each time to shift the vehicle out of park (P). The manufacturer was made aware of the failure and advised the contact to file a complaint with the NHTSA Hotline. The failure mileage was approximately 78,000.
NHTSA complaint #11667812 — an unverified report by a vehicle owner.
started losing power ,did not want to go pas 30 miles per hr ,then it ramed up and came to a stop with no acceleration ,i shut it off then start it again and was able to get home at a low rate of speed while continuing to have these problems, another day while far away from home the engine rammed up again minimizing my speed as the transmission was slipping and not go fast then my O/D over drive went on flashing a light ,while the engine kept steady at 20-30 miles per hour while accelerating increasing no speed ,now my SUV will not run wright, it will kick into gear at times constantly and cause problems driving safely ,this is a common problem I'm hearing and reading in the internet with the ford/ mercury mountaineer the manufactory does not want to accept responsibility with this problem ..... this is clear a RECALL ISSUE that needs to be addressed before someone gets killed on the highway by getting rammed by a semi-truck which it almost happened to me !!!! a multi-million dollar law suit is in order if they do not acknowledge and fix this problem
NHTSA complaint #11478634 — an unverified report by a vehicle owner.
Body : to much rust, corrosion, on rear of truck other failure or detachment of exterior body like rear gate frame components, and other structural components that may present a safety hazard. Electrical : electrical systems and items such asa wiring and cable on or inside the door, ignition switch cover detach ,instrument panel and gauges blinking that causes motors and actuators that power mechanical devices like (windows, sunroofs, seats, etc.) Generate some kind of electrical problem that may present a safety hazard. Power train :transmissions, transfer cases fluid hard to check ,electronic control units and shift lever inacurated, drive axles, hubs, shafts, differentials, CV joints star vibration that may present a safety hazard.
NHTSA complaint #11469915 — an unverified report by a vehicle owner.
This vehicle is has a power train problem from day one with the 5R55S/W transmission and AWD transfer case. I purchased this vehicle where it stranded my family over 200 miles from home and it's a non running car. This vehicle should have been removed from being sold with this defect and crushed! I will never buy a FoundOnRoad Dead ford pos ever. The transmission went into neutral with out any notice. To repair the faulty drive train I will cost me aprox $2400.00 mileage 152,000 third time the drive train has been worked on.. There tranmissions were failing in a little as 50,000 miles.
NHTSA complaint #11421672 — an unverified report by a vehicle owner.
MY CAR WILL JERK AS I'M DRIVING RPMS GOING HIGH WHILE NO SPEED IS PICKING UP. WITH JUMP OUT OF GEAR WHEN AT STOP LIGHT. LOUD GRINDING NOISE FROM TIRES COULD HAVE FOOT ALL THE WAY DOWN ON GAS PETAL AND GO NO FASTER.
NHTSA complaint #11413469 — an unverified report by a vehicle owner.
HAD TO REPLACE TRANSMISSION COMPLETELY AT 137,000 MILES. THERE'S BEEN A LOT OF COMPLAINTS ABOUT THESE TRANSMISSIONS AT THIS MILEAGE AND FORD SHOULD BE RESPONSIBLE FOR SOME OF THE COST. THIS IS RIDICULOUS.
NHTSA complaint #11407590 — an unverified report by a vehicle owner.
SINCE I PURCHASED IN 2009, ENGINE KILLS ANYTIME, MOSTLY WHEN GAS PEDAL NOT PRESSED. PULLING OUT OF PARKING LOTS, SITTING AT RED LIGHTS, OR LETTING OFF GAS ON INTERSTATE, ENGINE JUST KILLS. SOMETIMES FEELS LIKE A JOLT. I HAVE TO PUT THE SHIFT IN NEUTRAL AND RESTART THE ENGINE. RECORDS OF ALL VISITS FOR THE PROBLEM AT DEALERSHIP. NEVER COULD SOLVE PROBLEM, BUT TOO UNSAFE TO DONATE TO MY GRANDSON. IF SOMETHING WERE TO HAPPEN TO HIM BECAUSE OF A DEFECT THAT WAS NEVER FOUND, I DON'T KNOW WHAT I'D DO. CANNOT CHECK TRANSMISSION FLUID LEVEL. SEALED. I DO HAVE SOME FLUID STAINS ON MY DRIVEWAY. FOR YEARS I'VE REPORTED TO THE DEALERSHIP AND SPECIFIED THE CONCERN FOR SAFETY BUT TO NO AVAIL. IT KILLS ANYTIME. MAY NOT DIE FOR A WEEK, OR TOMORROW, OR EVEN A MONTH. NO PARTICULAR PATTERN. FEELS LIKE A TRANSMISSION PROBLEM. IF I'M SITTING IN A PARKING LOT WITH MOTOR RUNNING, SOMETIMES IT JUST KILLS. IT'S THE SHIFTING TO NEUTRAL WHILE DRIVING ON HIGHWAYS AND STREETS TO RESTART WHILE MOVING I'M WORRIED ABOUT. I'VE HAD SEVERAL MECHANICS CLAIM THEY FIXED IT BUT TO NO AVAIL. PLEASE GIVE ME SOME DIRECTION. ALL THE SHOPS I'VE GONE TO ARE REPUTABLE BUSINESSES. ONE MECHANIC SAID THE ELECTRONIC BRAIN (COMPUTER BOX) MIGHT BE CAUSING AND SAID TO SEND IT TO MERCURY FOR RECALCULATION. I DON'T KNOW ABOUT THAT. MOST OF THE READ OUTS ARE EPA RELATED.
NHTSA complaint #11365014 — an unverified report by a vehicle owner.
BIG O TECHS CONNED WIFE INTO BUYING 2 TIRES AND WE OWN AWD SUV THAT REQUIRES 4 AT THE SAME INTERVALS .I IMMEDIATELY NOTIFY THEM THAT THIS IS NOT SAFE AND WILL DAMAGE MY CAR THEY CONTINUED FOR OVER 2 MONTHS TO LIE TO ME ABOUT HAVING SOMEMONE COMTACT ME . I HAVE ALL THE COMMUNICATIONS I'VE HAD WITH THEM THROUGH MESSAGES. A FEW WEEKS AFTER THEY PUT THE TIRES ON AND REFUSED TO TAKE THEM OFF AND PUT MY OLD O ES BACK ON AND ISSUE A REFUND WELL MY TRANSMISSION AND TRANSFER CASE FAILED I CONTACTED THEM AGAIN AND AGAIN THEY LIED TO ME ABOUT SOMEONE CONTACTING ME . I TOOK MY SUV TO THE TRANSMISSION SHOP WE MEASURED OVER 2 INCH CIRCUMFERENCE DIFFERENCE. I INFORMED BIG O THAT I HAVE A TSB ISSUED BY FORD MY EMPLOYER THAT DATES BACK TO 2011 ON TIRE CIRCUMFERENCE PROCEDURES FOR TIRE DEALERS TO FOLLOW . THE RESPONSE I GOT WAS THAT BIG O REFUSES TO REVIEW OR ACKNOWLEDGE TSBS . THAT'S ALARMING AS TSBS ARE ISSUED MY THE MANUFACTURERS FOR SAFETY . I HAD MY SUV FIXED FOR 3000+ $ OUT OF POCKET AND CONTACTED BIG O THE DAY I PICKED IT UP ABOUT THE TIRES STILL BEING ON THERE . I WARNED THEM THIS IS DANGEROUS AND CAN HURT MY NEW DRIVETRAIN THE VERY NEXT DAY FROM GETTING MY SUV OUT OF THE SHOP THE TIRES AGAIN CAUSED BINDING TO OCCUR BUT THIS TIME IT LED TO WHAT SHOULD'VE BEEN A FATAL ACCIDENT WHERE AS THE AWD SYSTEM DONE IT'S JOB BUT THE TIRES BEING OFF BY SO MUCH MADE THE SUV BIND A THREE IN INTO 3 360 DEGREE SPIN AND SLAMMED THE CONCRETE MEDIAN TOTALING MY VEHICLE AND INJURING MY WIFE. I'VE DOCUMENTED ALL MESSAGES WITH BIG O AND HAVE MUCH MORE EVIDENCE RELATED TO THIS CASE THAT I'M UNABLE TO ADD IN THIS DESCRIPTION BECAUSE I'M RUNNING OUT OF ALLOWED CHARACTERS REMAINING . I DID CONTACT BIG O AGAIN AND SENT PHOTOS OF MY CRASHED SUV AND SUDDENLY THEY NOW WON'T RESPOND BACK AT ALL . I THINK THIS JUSTIFIES A FULL INVESTIGATION INTO THERE REFUSAL TO REVIEW TSBS AND FULL REIMBURSEMENT FOR ALL MY
NHTSA complaint #11349674 — an unverified report by a vehicle owner.
AT 28000 MILES THE TRANSMISSION STARTED SHIFTING ERRATIC, THE DEALER REPROGRAMMED THE ECM AND COVERED UP THE PROBLEM UNTIL THE WARRANT ENDED AND THE BATTERY FAILED AT WHICH TIME THE CAR REVERTED BACK TO DEFAULT AND CONTINUED TO BUCK AND JERK UNTIL THE CAR REACHED HIGHWAY SPEED. THIS CONTINUED UNTIL THE TRANSMISSION FINALLY FAILED DURING OPERATION ON THE HIGHWAY ON 3/5/20. THE ABS MODULE JUST FAILED DURING LOW SPEED OPERATION FOR NO APPARENT REASON. ALSO THE CAR INDICATED THAT THERE IS AN ELECTRICAL PROBLEM EVEN THOUGH ALL ELECTRICAL COMPONENTS ARE IN GOOD OPERATIONAL CONDITION. THIS ERROR COMES AND GOES CONSTANTLY AT ANY GIVEN TIME.
NHTSA complaint #11316784 — an unverified report by a vehicle owner.
THE O/D LIGHT KEEPS FLASHING AND IT DOESN'T SHIFT INTO GEAR WHEN PULLING OUT IN FRONT OF ONCOMING TRAFFIC ITS VARY DANGEROUS FOR MYSELF AND OTHER DRIVERS PLEASE ADDRESS THIS ON GOING PROBLEM WITH THIS TRANSMISSION
NHTSA complaint #11287826 — an unverified report by a vehicle owner.
I HAD TO REPLACE THE TRANSMISSION AND SOME OTHER RELATED PARTS IN MY VEHICLE AND I WAS INFORMED BY A DEALERSHIP THAT THERE WAS A "SILENT RECALL" ON THIS TRANSMISSION AND THAT EVEN THOUGH FORD MOTOR COMPANY WAS AWARE OF THE ISSUES AS EARLY AS 2000 THEY CONTINUE TO INSTALL THEM IN VEHICLES. IF YOU LOOK ONLINE YOU WILL SEE QUITE A NUMBER OF COMPLAINTS ON THIS TRANSMISSION. I FEEL SINCE FORD KNOWINGLY KEPT USING THESE TRANSMISSIONS AND WAS WELL AWARE OF THEIR POSSIBLE FAILURE WHEN THEY REACHED 130,000 MILES THAT THEY SHOULD BE RESPONSIBLE FOR AT LEAST A PORTION OF HE COSTS IF INDEED, NOT ALL OF THE COST OF REPLACEMENT. WHAT HAPPENS WHEN A CAR COMPANY PUTS OUT A SILENT RECALL? DO I HAVE ANY RIGHTS? I HAVE ALREADY SENT A CERTIFIED LETTER TO FORD MOTOR CUSTOMER RELATIONS IN DEARBORN, MI AND I HAVE A SIGNED RECEIPT THAT THEY ACCEPTED MY LETTER BUT THEY HAVE NOT BOTHERED TO CONTACT ME AT ALL. WHAT ARE MY OPTIONS AND IS THIS SOMETHING YOU CAN HELP ME WITH? THE FIRST TIME THIS TRANSMISSION CAUSED A PROBLEM WAS WHEN WE WERE IN 5 PM TRAFFIC ON A ROAD WITH A SPEED LIMIT OF 55 MILES AN HOUR AND THE CAR JUST STOPPED LEAVING MY FAMILY IN THE MIDDLE OF A BUSY TWO LANE ROAD WHICH WAS VERY DANGEROUS. WE WERE FINALLY ABLE TO GET THE VEHICLE TO THE SHOULDER. I CAN FORWARD MY BILLS AND COPIES OF ONLINE CONVERSATIONS REGARDING THE FAILURE OF THESE TRANSMISSIONS.
NHTSA complaint #11270823 — an unverified report by a vehicle owner.
TAKATA RECALL WHILE MY VEHICLE IS IN MOTION, & WHEN I STOP AT A STOP LIGHT, IT'S SUDDENLY SHUTS OFF. THIS HAS HAPPENED SEVERAL TIMES WHILE ON THE HIGHWAY AT HIGHWAY SPEEDS, & ON CITY STREETS AT NORMAL SPEEDS. IT HAS PROVEN DANGEROUS SEVERAL TIMES. WHEN I PUT THE VEHICLE IN REVERSE, THE VEHICLE JERKS VERY HARD. ALSO WHEN I DRIVE FOR MORE THAN 6 TO 7 MILES AT HIGHWAY SPEEDS, A TIRE PRESSURE SENSOR COMES ON.
NHTSA complaint #11196908 — an unverified report by a vehicle owner.
THE GEAR SHAFT WILL STOP MY CAR FROM STARTING WHEN I TURN IT OFF. IT WILL ALSO MAKE MY CAR VUT OFF WHILE DRIVING..THE BUTTON ON THE GEAR STICK WILL GET STUCK AND I AM ABLE TO SHIFT GEARS...WHEN THE CAR IS NOT STARTED AND MY FOOT IS NOT ON THE BREAKS. EVEN WHEN THE BUTTON IS NOT STUCK, IT STILL WILL GET STUCK IN PARK AND WONT LET ME START MY CAR..A RECALL SHOULD BE STARTED..BECAUSE I HAVE SEEN OTHERS ON HERE WITH SIMILAR COMPLAINTS..SO ITS A MANUFACTURING ACCIDENT NOT THE CONSUMER.
NHTSA complaint #11194823 — an unverified report by a vehicle owner.
REAR DIFFERENTIAL IS FILLING WITH WATER PASS THE FILL PLUG. THIS IS A GARAGE KEPT CAR AND NEVER OFF ROAD NOR DIRVEN IN DEEP WATER. FIRST TIME DISCOVERED AT 22000 MILES AND THE DEALER REPLACE THE PINION SEAL AND OIL, BUT COULD NOT FIND THE CAUSE. DIFFERENTIAL NOW MAKING NOISE AND AGAIN FULL OF WATER PAST THE FILL PLUG. SEARCHED ONLINE AND FOUND SEVERAL PEOPLE WITH THE SAME PROBLEM WITH FORD PRODUCTS. DEALER CANNOT FIND OR NOT WILLING TO FIND THE CAUSE. CALLED FORD AND THEY OFFER LITTLE TO NO SUPPORT. GUESS THEY ARE WAITING FOR THE DIFFERENTIALS TO LOCK UP AT HIGHWAY SPEED AND KILL A DOZEN OF SO PEOPLE.
NHTSA complaint #11157272 — an unverified report by a vehicle owner.
TL* THE CONTACT OWNS A 2007 MERCURY MOUNTAINEER. WHILE DRIVING VARIOUS SPEEDS, THE VEHICLE WOULD JUMP AND JERK. THE VEHICLE WAS TAKEN TO AN INDEPENDENT MECHANIC AND IT WAS DIAGNOSED THAT THE TRANSMISSION FAILED. THE DEALER AND MANUFACTURER WERE NOT MADE AWARE OF THE FAILURE. THE VEHICLE WAS NOT REPAIRED. THE FAILURE MILEAGE WAS 60,000. *TT UPDATED 9/21/18
NHTSA complaint #11098823 — an unverified report by a vehicle owner.
WHILE DRIVING MY SEAT WILL RANDOMLY MOVE BACK AND FORTH AS IF I TOOK THE KEYS OUT. THOUGHT SOMETHING WAS WRONG WITH MY TRANSMISSION BUT AFTER HAVING THE GARAGE PUT TRANSMISSION FLUID IN IT STILL FEELS LIKE THE TRANSMISSION IS MESSED UP EVEN THOUGH THE GARAGE SAYS THE TRANSMISSION IS FINE.
NHTSA complaint #11083828 — an unverified report by a vehicle owner.