2007 Mercury Mountaineer Problems
Owner-reported complaints filed with NHTSA, grouped by component
Data refreshed
What this page shows
Everything below is an owner-reported complaint submitted to NHTSA about the 2007 Mercury Mountaineer, grouped by the component NHTSA recorded on the report. These are not confirmed defects, and they are not recalls. NHTSA does not verify most reports before publishing them, and a category with more reports in it is not evidence that a part is defective.
Complaints are reports submitted by owners and drivers to NHTSA. They are not verified and do not establish that a defect exists.
Reports by component
Ranked by how many owner reports name each component category
- Interior & seats2724.1%
- Powertrain (other)2118.8%
- Electrical1614.3%
- Engine98.0%
- Driver assistance87.1%
- Steering54.5%
- Body & structure54.5%
- Transmission43.6%
- Visibility32.7%
- Seat belts32.7%
- Other / unspecified32.7%
- Exterior lighting21.8%
- Tires & wheels21.8%
- Suspension10.9%
- Brakes10.9%
- Fuel system10.9%
- Airbags10.9%
Percentages are of component mentions. A single complaint can name more than one component, so these do not sum to the total complaint count.
Each component in detail
What the reports in each category say, in the owners' own words
Interior & seats
Reports naming seats, latches, locks, linkages and interior fittings.
From owner reports, verbatim
It happens every time I drive this vehicle. The ignition is lose, so the key jiggles and if their is too much bumping or shaking the key slightly moves and the seat and interior lights come on now I’ve tried Combat the issue with keeping the lights off on the interior and thought maybe I could turn off the seat function still haven’t figured that out yet
1ST WHILE DRIVING THE DRIVER'S SEAT CONTINUES TO MOVE BACK N FORTH FROM WAY BACK TO UP CLOSE DRIVING THIS VEHICLE WHILE THIS SEAT MOVES IS VERY DANGEROUS EVERYTIME I LOCK THE DOORS THEY UNLOCK N ONLY LOCK WHEN OFF
Powertrain (other)
Powertrain reports that are not specifically the engine or transmission — driveshafts, axles, transfer cases and differentials.
From owner reports, verbatim
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.
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.
Electrical
Reports naming the electrical system — wiring, battery, charging, control modules, infotainment and electrical accessories.
From owner reports, verbatim
It happens every time I drive this vehicle. The ignition is lose, so the key jiggles and if their is too much bumping or shaking the key slightly moves and the seat and interior lights come on now I’ve tried Combat the issue with keeping the lights off on the interior and thought maybe I could turn off the seat function still haven’t figured that out yet
1ST WHILE DRIVING THE DRIVER'S SEAT CONTINUES TO MOVE BACK N FORTH FROM WAY BACK TO UP CLOSE DRIVING THIS VEHICLE WHILE THIS SEAT MOVES IS VERY DANGEROUS EVERYTIME I LOCK THE DOORS THEY UNLOCK N ONLY LOCK WHEN OFF
Engine
Reports naming the engine itself — including stalling, misfires, oil consumption, cooling and internal engine components.
From owner reports, verbatim
If you set cruise control while driving under 45 mph the engine shuts off.
CAR RAN ROUGH & HESITATED/SURGED UPON ACCELERATION. APPARENTLY THIS IS A COMMON FORD PROBLEM INVOLVING PREMATURE SPARK PLUG BREAK DOWN IN THE FORD TRITON ENGINE SEE FORD SPARK PLUG CLASS ACTION SETTLEMENT. SHULTZ FORD IN NANUET NY DIAGNOSED THE PROBLEM AS FAULTY PLUGS, THERE WAS ALSO A RISK OF BREAKING PLUGS UPON REMOVAL. I HAD THEM DO THE REPAIRS AT A COST OF $788. LATER I FOUND THAT THERE WAS A SETTLEMENT, HOWEVER MY CAR WAS NOT INCLUDED EVEN THOUGH IT HAD THE SAME ENGINE AS THE CARS/TRUCKS/ SUV'S THAT WERE INCLUDED IN THE SETTLEMENT. FORD CUSTOMER SERVICE SAID THERE WAS NOTHING THEY COULD DO RE: REIMBURSING ME FOR THE REPAIR EXPENSE AS MY SUV WAS NOT INCLUDED IN THE SETTLEMENT. THEY SUGGESTED I FILE THIS COMPLAINT. CAN I GET SOME SATISFACTION?
Driver assistance
Reports naming forward-collision avoidance, lane keeping, back-over prevention, cruise control and related electronic driver-assistance systems.
From owner reports, verbatim
MY 2007 MERCURY MOUNTAINEER NEVER HAD ANY PROBLEMS UNTIL RECENTLY, THOUGHT IT WAS THE TRANSMISSION BECAUSE OF THE WAY IT DROVE. TOOK IT TO THE MECHANIC AND GOT TRANSMISSION FLUID PUT IN BUT THE PROBLEMS REMAINED THE SAME AND WAS TOLD THE TRANSMISSION WAS FINE. MY THERMOSTAT HOUSING UNIT WAS LEAKING (THIS IS VERY COMMON WITH THESE CARS AND VERY DANGEROUS, NEEDS IMMEDIATE ATTENTION!) AND HAD CAUSED VERY EXPENSIVE WIRING ISSUES. ALMOST ACTS EXACTLY LIKE THE TRANSMISSION IS GOING OUT - RPM'S ARE WAY TOO HIGH, THE VEHICLE WOULD NOT ACCELERATE IN THE MIDDLE OF CITY TRAFFIC, THE CAR JUMPED AT A STOPLIGHT AND CAUSED ME TO HIT THE CAR IN FRONT OF ME, AND IT DOESN'T SHIFT PROPERLY. PROBLEMS OCCURRED OUT OF NOWHERE AND ARE TOO DANGEROUS TO BE IGNORED BUT VERY EXPENSIVE TO BE FIXED. ITS VERY COMMON AND SHOULD BE RECALLED BEFORE SOMEONE GETS SERIOUSLY INJURED!!!!
- SEAT ( DRIVER'S SEAT) AUTOMATICALLY MOVES WHILE DRIVING CAUSING A SAFETY ISSUES. - EXCESS WATER LEAKAGE AROUND LEFT DOOR JAM IN WATER RUN DOWN INTO BASE OF FLOOR - WATER SEEPAGE AROUND SUN ROOF - TIRE SENSOR ( LEFT)
Steering
Reports naming the steering system — racks, columns, power-steering assist and steering linkage.
From owner reports, verbatim
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.
EXACT SAME AS NHTSA ID # 10654146. THE "EASY EXIT" FEATURE ACTIVATED AT 65 MPH IN FREEWAY TRAFFIC. I AM 6' TALL AND WAS ABLE TO SLIDE SEAT FORWARD, BUT MY WIFE IS 5' TALL AND MAY HAVE HAD ISSUES REACHING THE PEDALS... THIS HAS SINCE HAPPENED ON 3 OTHER OCCASIONS ( 2 AT FREEWAY SPEED, AND ONCE PULLING INTO OUR DRIVEWAY). I WILL CONTACT DEALER, BUT WANTED SEARCH RECALLS FIRST. *TR
Too few reports in this category for a page of its own — they appear in the full complaint list.
Body & structure
Reports naming the vehicle structure, frame, body panels, doors, hood and trim.
From owner reports, verbatim
MY 2007 MERCURY MOUNTAINEER NEVER HAD ANY PROBLEMS UNTIL RECENTLY, THOUGHT IT WAS THE TRANSMISSION BECAUSE OF THE WAY IT DROVE. TOOK IT TO THE MECHANIC AND GOT TRANSMISSION FLUID PUT IN BUT THE PROBLEMS REMAINED THE SAME AND WAS TOLD THE TRANSMISSION WAS FINE. MY THERMOSTAT HOUSING UNIT WAS LEAKING (THIS IS VERY COMMON WITH THESE CARS AND VERY DANGEROUS, NEEDS IMMEDIATE ATTENTION!) AND HAD CAUSED VERY EXPENSIVE WIRING ISSUES. ALMOST ACTS EXACTLY LIKE THE TRANSMISSION IS GOING OUT - RPM'S ARE WAY TOO HIGH, THE VEHICLE WOULD NOT ACCELERATE IN THE MIDDLE OF CITY TRAFFIC, THE CAR JUMPED AT A STOPLIGHT AND CAUSED ME TO HIT THE CAR IN FRONT OF ME, AND IT DOESN'T SHIFT PROPERLY. PROBLEMS OCCURRED OUT OF NOWHERE AND ARE TOO DANGEROUS TO BE IGNORED BUT VERY EXPENSIVE TO BE FIXED. ITS VERY COMMON AND SHOULD BE RECALLED BEFORE SOMEONE GETS SERIOUSLY INJURED!!!!
THE REAR HATCH HINGE ON THE GLASS BROKE WHEN OPENING. IT ALMOST HIT ME IN THE HEAD
Too few reports in this category for a page of its own — they appear in the full complaint list.
Transmission
Reports naming the automatic or manual transmission, including shifting behaviour, shudder, slipping and transmission control modules.
From owner reports, verbatim
TRANSMISSION JERKS AHEAD WHILE TRAVELING ON LONG DISTANCES AND SHORT. IT HAS GOTTEN WORSE. WHEN I APPLY GAS AND USE THE PASSING GEAR TO ACCELERATE IT SHAKES VIOLENTLY. GOING IN AND OUT OF NEUTRAL IT WOULD SEEM. VEHICLE IS 2007 53,000 MILES. CURRENTLY AT DEALER WITH TRANSMISSION SPECIALIST. THEY ARE TALKING TO FORD HQ FOR DIRECTION AND HAVE TRIED UNSUCCESSFULLY TO FIX IT SO FAR. THEY ARE NOW LOOKING AT MEGATRONICS. INTERNET BLOGS SHOW THIS IS VERY COMMON IN FORD SUV'S AND NOT A NEW PROBLEM BUT OVERLOOKED FOR SURE. *TR
TRANSMISSION HARD DOWNSHIFT WHEN STOPPING OR IN SLOW TRAFFIC. VEHICLE SURGES ALMOST "LEAPS" FORWARD WHILE AT A STOP WHEN FOOT TAKEN OFF OF BRAKE PEDAL. ALMOST HIT VEHICLE IN FRONT. ANOTHER MOUNTAINEER OWNER REFERS TO IT AS A "BUMP STOP". THIS OCCURS DAILY ALTHOUGH NOT EVERY TIME THE VEHICLE STOPS OR SLOWS. THE IS VERY UNNERVING IN STOP & GO TRAFFIC AS YOU HAVE TO KEEP YOUR FOOT ON THE BRAKE AND LEAVE A LARGE SPACE BETWEEN THE VEHICLE IN FRONT TO AVOID REAR ENDING THE OTHER VEHICLE. TOOK VEHICLE TO AAMCO AS OUR FORD DEALERSHIP IS DEPLORABLE, AAMCO COULD NOT DETECT ANY DEFECTS. VEHICLE HAS 19,000 MILES AND IS STILL UNDER FACTORY WARRANTY. *TR
Too few reports in this category for a page of its own — they appear in the full complaint list.
Visibility
Reports naming windshields, glass, wipers, defrosters and mirrors.
From owner reports, verbatim
FIRST OFF WHEN I BOUGHT THE VEHICLE THE REAR WIPER DOES NOT WORK. SECONDLY WHEN YOU PUT THE VEHICLE IN REVERSE IT JOLTS BEFORE GOING INTO REVERSE. FINALLY IT ONLY LET'S YOU PUT SO MUCH OF FUEL INTO THE GAS TANK AT A TIME BEFORE STOPPING THE FUEL FLOW INTO THE GAS TANK. *JS
2007 MERCURY MOUNTAINEER. CONSUMER WRITES IN REGARDS TO ACCELERATION AND CONSOLE LIGHTING ISSUES AND PROBLEMS WITH BACK WINDSHIELD WIPERS. *SMD
Too few reports in this category for a page of its own — they appear in the full complaint list.
Seat belts
Reports naming seat belts, buckles, retractors and pretensioners.
From owner reports, verbatim
I buckle the seat belt and it just comes unbuckled spontaneously when I’m driving. I check to see if the seat belt is secure by pulling on it. It seems secure but still unbuckles. I usually have to redo my seatbelt every 5 minutes. I do not feel like it will keep me safe in a collision
PASSENGER SEATBELT LOCKS WILL NOT UNLOCK UNLESS YOU UNBUCKEL THE BELT IT JUST KEEPS GETTING TIGHTER HAVE A PROBLEM WHERE THE YOU PUSH DOWN ON GAS IT WON'T DO ANYTHING FOR A MOMENT THEN JOLT FORWARD AN THE MAIN PROBLEM IT WITH THE ELECTRIC IF YOU BARLEY TOUCH THE IGNITION SWITCH OR CONTROLS FOR THE SEAT THE SEAT MOVES THE IGNITION ALSO NOT ONLY MOVES THE SEAT BUT A COUPLE TIMES IT HAS SHUT THE CAR OFF AND ONCE LOCKED US IN THE CAR HAD TO PUT THE KEYS IN AND START TO GET IT TO UNLOCK AND ONCE LOCKED US OUT WITH KEYS STILL IN IGNITION SWITCH
Too few reports in this category for a page of its own — they appear in the full complaint list.
Other / unspecified
Reports whose component NHTSA recorded as unknown, or that do not map to one of the categories above.
From owner reports, verbatim
- SEAT ( DRIVER'S SEAT) AUTOMATICALLY MOVES WHILE DRIVING CAUSING A SAFETY ISSUES. - EXCESS WATER LEAKAGE AROUND LEFT DOOR JAM IN WATER RUN DOWN INTO BASE OF FLOOR - WATER SEEPAGE AROUND SUN ROOF - TIRE SENSOR ( LEFT)
PURCHASE 4 NEW TIRES MARCH 9, 2013 FROM OUR LOCAL MR. TIRE IN MARION OHIO. THEY STARTED GOING BAD THIS SUMMER. WENT TO MANAGER AND WAS TOLD YOU NEVER HAD THEN ROTATED AS TOLD. WE DID GO AFTER 6 MONTHS OF PURCHASE AND TOLD TO COME BACK NEXT DAY SINCE THEY WERE TOO BUSY THAT DAY. THEY WERE NOT NICE AND I CALLED TIRE COMPANY GITI TIRE AND WAS TOLD TO HAVE THE STORE CALL THEM WHICH MR. TIRE NEVER DID, MANY LIFE EVENTS HAVE HAPPENED SINCE THEN AND NEVER WENT BACK. THE TWO BACK TIRES NOW HAVE SHARP METAL COMING THRU AS FOUND BY MY SON WHEN I ALMOST WRECKED IN THE RAIN YESTERDAY. THE TWO FRONTS ARE GOING BALD. THE TIRES ARE RUNWAY ENDURO 816 - P235/65R18. THEY HAVE 18, 660 MILES ON THEM WITH A 40,000 MILE WARRANTY. I DO NOT HAVE THE MONEY TO REPLACE 4 NEW TIRES. *TR
Too few reports in this category for a page of its own — they appear in the full complaint list.
Exterior lighting
Reports naming headlights, tail lights, turn signals and other exterior lighting.
From owner reports, verbatim
UPON DRIVING ON THE FREEWAY THE INSIDE DOME LIGHTS CAME ON AND MY SEAT STARTED ADJUSTING ITSELF BACK AND FORTH WHILE DRIVING.
I WAS DRIVING MY VEHICLE AND THE DRIVER'S SEAT MOVED BACK, AND THE DOME LIGHT CAME ON. THIS REALLY SCARED ME! THANK GOD I WASN'T ON THE HIGHWAY TRAVELING AT A HIGHER RATE OF SPEED WITH OTHER VEHICLES WHEN THIS OCCURRED. THE FIRST TIME THIS HAPPENED WAS APPROXIMATELY 3 MONTHS AGO (THE SEAT MOVES BACK, I MOVE THE SEAT UP & IT GOES BACK AGAIN, I MOVE IT UP AGAIN...UNTIL IT FINALLY STOPS). THIS CONTINUES TO HAPPEN PERIODICALLY EVERY SINCE. *TR
Too few reports in this category for a page of its own — they appear in the full complaint list.
Tires & wheels
Reports naming tires, wheels, hubs, or the tire-pressure monitoring system.
From owner reports, verbatim
My husband had purchased 4 brand new COOPER TIRES EVOLUTION H/T M+S size P235 / 65 R 18 a number of years ago. My husband has since passed away. I cannot find my sales receipt due to the fact my husband had paid for the tires in question. I do not know what he did with the sales receipt. I have a few good-faith efforts and attempts to bring this matter to COOPER TIRES but each and every time I got the same reply from them "NO we cannot help you. We will not be able to warranty your tires for you......we need a sales receipt......" I had my good friend take my vehicle to a local tire dealer and installer recommended by COOPER TIRES and this tire dealer found that: (1) all 4 COOPER TIRES on my vehicle look and are brand new (2) tire tread depth on all 4 COOPER TIRES on my vehicle are 8/32 " (3) three COOPER TIRES on my vehicle show a DOT date code of 2017 and one COOPER TIRE on my car shows a DOT date code of 3817 (4) all four COOPER TIRES on my vehicle have numerous cracks on the sidewall of the tires which is a manufacture defective and COOPER TIRES should replace all 4 tires on my car (5) the right-rear COOPER tire on my vehicle is leaking air from the sidewall due to the cracks. (6) COOPER TIRES should under the law include my tires under their national recall list because the COOPER TIRES on my vehicle have the same (1) make and model tire (2) the exact same size tire (3) all 4 COOPER TIRES on vehicle were made in the same factory as the rest of the recall tires (4) three of the COOPER TIRES on my vehicle have an issue with the date code (see recall NHTSA Campaign Number: 21T014000 for more info). I could go on and on but I think you get the idea. Also, I will hold COOPER TIRES legally liable if I get into a car accident due to its manufacture defective COOPER tires. The exact dates my good friend has contacted COOPER TIRES are: (1) May 01, 2024 (four times); (2) May 02, 2024 (three times). I asked for a call back but nobody returned my call.
PURCHASE 4 NEW TIRES MARCH 9, 2013 FROM OUR LOCAL MR. TIRE IN MARION OHIO. THEY STARTED GOING BAD THIS SUMMER. WENT TO MANAGER AND WAS TOLD YOU NEVER HAD THEN ROTATED AS TOLD. WE DID GO AFTER 6 MONTHS OF PURCHASE AND TOLD TO COME BACK NEXT DAY SINCE THEY WERE TOO BUSY THAT DAY. THEY WERE NOT NICE AND I CALLED TIRE COMPANY GITI TIRE AND WAS TOLD TO HAVE THE STORE CALL THEM WHICH MR. TIRE NEVER DID, MANY LIFE EVENTS HAVE HAPPENED SINCE THEN AND NEVER WENT BACK. THE TWO BACK TIRES NOW HAVE SHARP METAL COMING THRU AS FOUND BY MY SON WHEN I ALMOST WRECKED IN THE RAIN YESTERDAY. THE TWO FRONTS ARE GOING BALD. THE TIRES ARE RUNWAY ENDURO 816 - P235/65R18. THEY HAVE 18, 660 MILES ON THEM WITH A 40,000 MILE WARRANTY. I DO NOT HAVE THE MONEY TO REPLACE 4 NEW TIRES. *TR
Too few reports in this category for a page of its own — they appear in the full complaint list.
Suspension
Reports naming suspension components — springs, struts, shocks, control arms and related hardware.
From owner reports, verbatim
FRONT BEARINGS THAT ATTACHES TO THE AWD FAILED. IT WILL BE REPLACED AS SOON AS PARTS ARE AVAILABLE. *TR
Too few reports in this category for a page of its own — they appear in the full complaint list.
Brakes
Reports naming service brakes, the antilock braking system, brake hoses, master cylinders or the parking brake.
From owner reports, verbatim
WHEN MAKING A SUDDEN STOP, THE BRAKE PEDAL GOES TO THE FLOOR WHILE MAINTAINING PRESSURE ON THE BRAKE PEDAL. WHEN HOLDING VEHICLE ON A STEEP INCLINE (STOPPED), THE PEDAL GOES TO THE FLOOR. HAD IT BACK TO FORD DEALERS AND WAS TOLD THIS IS A NORMAL CONDITION FOR EXPLORERS AND MOUNTAINEERS EVEN THOUGH SERVICE MANAGERS AND THE MECHANICS HAVE TOLD ME THERE WAS A PROBLEM WHEN THEY INITIALLY CHECKED THE BRAKES. I HAVE STARTED THE PAPERWORK FOR THE NYS LEMON LAW PROCEDURE. I HAVE PUT THE FIRST COMPLAINT OF THIS IN THE APPROX. ACCIDENT DATE BOX. THIS HAPPENS WHENEVER YOU USE THE VEHICLE. *TR
Too few reports in this category for a page of its own — they appear in the full complaint list.
Fuel system
Reports naming fuel storage or delivery — tanks, pumps, lines, injectors and fuel leaks.
From owner reports, verbatim
FIRST OFF WHEN I BOUGHT THE VEHICLE THE REAR WIPER DOES NOT WORK. SECONDLY WHEN YOU PUT THE VEHICLE IN REVERSE IT JOLTS BEFORE GOING INTO REVERSE. FINALLY IT ONLY LET'S YOU PUT SO MUCH OF FUEL INTO THE GAS TANK AT A TIME BEFORE STOPPING THE FUEL FLOW INTO THE GAS TANK. *JS
Too few reports in this category for a page of its own — they appear in the full complaint list.
Airbags
Reports naming the air-bag system — deployment behaviour, inflators, sensors and warning lights.
From owner reports, verbatim
I AM RECEIVING FALSE READINGS AS TO THE ACTIVATION OF THE AIR BAGS. THIS HAPPENS WHEN I AM STARTING THE VEHICLE AND ALSO WHEN I AM OPERATING THE VEHICLE ON THE HIGHWAY. I CAN TURN THE VEHICLE OFF AND RESTART IT, AND SOMETIMES THE INDICATOR WORKS PROPERLY AND SOMETIMES IT DOES NOT. I EXPERIENCE THE SAME PROBLEM SOMETIMES WHEN THE PASSENGER SEAT IS OCCUPIED. MY CONCERN IS THE FACT I DON'T KNOW IF MY AIRBAG IS OPERATIONAL OR NOT. I CONTACTED MY LOCAL DEALER AND WAS INFORMED I WOULD BE CHARGED $99 TO JUST HAVE IT CHECKED. I HAVE NOT DONE SO.
Too few reports in this category for a page of its own — they appear in the full complaint list.
Higher-selling and older vehicles accumulate more reports. Counts are not failure rates and are not directly comparable between vehicles that sold in very different numbers.
Elsewhere on this vehicle
Data sources
- NHTSA Office of Defects Investigation — owner-reported complaints and the components recorded on them
Data on this page last refreshed .