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2008 Mercury Mountaineer

Owner reports · Recalls · Investigations

Similar to other model years

Owner complaints for the 2008 Mercury Mountaineer do not stand out strongly from the model-year median of 117.

About this comparison →

When problems were reported

Mileage at the reported incident

81 reports with mileage · 15 unknown

NHTSA’s mileage field refers to the reported incident, not necessarily the filing date. This shows report counts, not the likelihood of a failure.

What to inspect

Issues worth paying extra attention to based on owner reports.

  • Seats. Review the 54 owner reports in this category and discuss these concerns during a pre-purchase inspection. Read reports →
  • Electrical System. Review the 39 owner reports in this category and discuss these concerns during a pre-purchase inspection. Read reports →
  • Power Train. Review the 9 owner reports in this category and discuss these concerns during a pre-purchase inspection. Read reports →

NHTSA owner reports · September 18, 2026 snapshot.

3 crash reports0 fire reports0 injury reports

What owners actually said

96 reports
Mileage unknown · Oct 14, 2013
Interior LightingSeatsStructure

WHILE DRIVING THE DRIVER SEAT SLIDES BACK INTO EXIT FORM AND IT IS HARD TO REACH THE GAS AND BRAKES AND THE INTERIOR LIGHTS COME ON. THIS HAPPENS PERIODICALLY WHILE DRIVING IF YOU TOUCH THE IGNITION AS IF YOU ARE GOING TO START THE VEHICLE THE SEAT WILL GO BACK INTO PLACE AND THE INTERIOR LIGHTS WILL GO OFF. *TR

NHTSA ODI #10547863

65,000 miles · Sep 26, 2013
Electrical System

TL* THE CONTACT OWNS A 2008 MERCURY MOUNTAINEER. THE CONTACT STATED THAT THE DRIVER'S SIDE SEAT INDEPENDENTLY ENGAGED INTO THE EASY EXIT POSITION AS THE INTERIOR LIGHTS FLASHED ON AND OFF. THE VEHICLE WAS TAKEN TO A MECHANIC WHERE A DIAGNOSTIC WAS PERFORMED, WHICH LOCATED THE FAILURE AT THE IGNITION SWITCH AND THE CYLINDER. THE…

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TL* THE CONTACT OWNS A 2008 MERCURY MOUNTAINEER. THE CONTACT STATED THAT THE DRIVER'S SIDE SEAT INDEPENDENTLY ENGAGED INTO THE EASY EXIT POSITION AS THE INTERIOR LIGHTS FLASHED ON AND OFF. THE VEHICLE WAS TAKEN TO A MECHANIC WHERE A DIAGNOSTIC WAS PERFORMED, WHICH LOCATED THE FAILURE AT THE IGNITION SWITCH AND THE CYLINDER. THE MANUFACTURER WAS MADE AWARE OF THE FAILURE. THE VIN WAS NOT AVAILABLE. THE VEHICLE WAS NOT REPAIRED. THE FAILURE MILEAGE WAS 65,000 AND THE CURRENT MILEAGE WAS 66,000.

NHTSA ODI #10545472

Mileage unknown · Aug 23, 2013
Engine

I HAVE 2 BROKEN BOLTS ON MY RT SIDE EXHAUST MANIFOLD AND ONCE AND A WHILE CAN SMELL EXHAUST FUMES IN THE TRUCK. I'VE TAKEN IT TO FIVE SEPARATE MECHANICS FOR DIAGNOSTICS THE REPAIRS ARE VERY EXPENSIVE AND EVERYONE SAID THERE SHOULD BE A RECALL FOR THIS. AFTER A LITTLE RESEARCH THERE ARE HUNDREDS IF NOT THOUSANDS WITH THIS SAME …

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I HAVE 2 BROKEN BOLTS ON MY RT SIDE EXHAUST MANIFOLD AND ONCE AND A WHILE CAN SMELL EXHAUST FUMES IN THE TRUCK. I'VE TAKEN IT TO FIVE SEPARATE MECHANICS FOR DIAGNOSTICS THE REPAIRS ARE VERY EXPENSIVE AND EVERYONE SAID THERE SHOULD BE A RECALL FOR THIS. AFTER A LITTLE RESEARCH THERE ARE HUNDREDS IF NOT THOUSANDS WITH THIS SAME PROBLEM I HAVE GRANDCHILDREN WHO HAVE TO DRIVE IN THIS TRUCK EVERY DAY AND ARE SUBJECT TO DANGEROUS FUMES WHY !!!!!!!!! HASN'T FORD DONE ANYTHING ABOUT THIS. I CALLED FORD TELL THEM WHAT THE PROBLEM IS AND GET NOWHERE THERE EXACT WORD ARE ( THERE ISN'T ENOUGH COMPLAINTS ABOUT THIS PROBLEM ) BS !! LOOK ON THE INTERNET AND YOU'LL SEE NHTSA NEEDS TO HELP PEOPLE WITH THIS NOW BEFORE IT'S TO LATE. *TR

NHTSA ODI #10536855

Mileage unknown · Jun 8, 2013
Seats

WHEN YOU HIT A BUMP WHILE DRIVING THE DRIVER'S SEAT MOVES ALL THE WAY BACK TO THE EASY ENTER/EXIT POSITION AND THE DOME LIGHT COMES ON. I AM A SHORT PERSON OF 5' AND WHEN THIS HAPPENS I CANNOT REACH THE PEDDLES AND HAVE TO EXTEND MY ARMS ALL THE WAY TO REACH THE STEERING WHEEL. I HAVE TO REACH DOWN AND MANUALLY MOVE THE SEAT B…

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WHEN YOU HIT A BUMP WHILE DRIVING THE DRIVER'S SEAT MOVES ALL THE WAY BACK TO THE EASY ENTER/EXIT POSITION AND THE DOME LIGHT COMES ON. I AM A SHORT PERSON OF 5' AND WHEN THIS HAPPENS I CANNOT REACH THE PEDDLES AND HAVE TO EXTEND MY ARMS ALL THE WAY TO REACH THE STEERING WHEEL. I HAVE TO REACH DOWN AND MANUALLY MOVE THE SEAT BACK. SINCE MY SPEED DECREASES SUDDENLY I AM AFRAID SOMEONE WILL REAR END ME ONE DAY. I UNDERSTAND THAT THIS IS HAPPENING ON MORE THAN ONE 2008 MERCURY MOUNTAINEERS AND TO HAVE IT REPAIRED WILL COST HUNDREDS OF DOLLARS. I AM RETIRED WITH A DISABILITY AND ON A FIXED INCOME AND CANNOT AFFORD TO HAVE THIS FIXED. THIS IS A SERIOUS SAFETY HAZARD AND DO NOT KNOW WHY FORD WILL NOT ISSUE A RECALL. I HOPE NO ONE IS SERIOUSLY OR FATALLY INJURED BECAUSE OF THIS ISSUE. *TR

NHTSA ODI #10515789

72,222 miles · May 30, 2013
Seats

TL* THE CONTACT OWNS A 2008 MERCURY MOUNTAINEER. THE CONTACT STATED THAT WHILE DRIVING APPROXIMATELY 35 MPH OVER A ROAD BUMP, THE FRONT DRIVER'S SIDE POWER SEAT MOVED BACKWARD AND FORWARD INDEPENDENTLY. THE INTERIOR LIGHTS BEGAN TO ILLUMINATE AS THE FAILURE OCCURRED. THE VEHICLE WAS TAKEN TO AN AUTHORIZED DEALER FOR DIAGNOSIS. T…

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TL* THE CONTACT OWNS A 2008 MERCURY MOUNTAINEER. THE CONTACT STATED THAT WHILE DRIVING APPROXIMATELY 35 MPH OVER A ROAD BUMP, THE FRONT DRIVER'S SIDE POWER SEAT MOVED BACKWARD AND FORWARD INDEPENDENTLY. THE INTERIOR LIGHTS BEGAN TO ILLUMINATE AS THE FAILURE OCCURRED. THE VEHICLE WAS TAKEN TO AN AUTHORIZED DEALER FOR DIAGNOSIS. THE VEHICLE WAS NOT REPAIRED. THE MANUFACTURER WAS NOTIFIED OF THE DEFECT. THE APPROXIMATE FAILURE MILEAGE WAS 72,222.

NHTSA ODI #10514326

60,000 miles · Apr 17, 2013
Seats

WHILE DRIVING THE VEHICLE, THE DRIVER'S SEAT WILL MOVE BACKWARDS TO THE "EASY EXIT" POSITION WITHOUT WARNING. IT DOES THIS WHENEVER THE VEHICLE IS JARRED FROM ROAD CONDITIONS OR WHEN THE DRIVER'S KNEE BUMPS THE IGNITION. THIS HAPPENS AT LOW AND HIGH SPEEDS. MY WIFE IS SHORT AND THIS DEFECT MOVES HER OUT OF REACH OF THE BRAK…

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WHILE DRIVING THE VEHICLE, THE DRIVER'S SEAT WILL MOVE BACKWARDS TO THE "EASY EXIT" POSITION WITHOUT WARNING. IT DOES THIS WHENEVER THE VEHICLE IS JARRED FROM ROAD CONDITIONS OR WHEN THE DRIVER'S KNEE BUMPS THE IGNITION. THIS HAPPENS AT LOW AND HIGH SPEEDS. MY WIFE IS SHORT AND THIS DEFECT MOVES HER OUT OF REACH OF THE BRAKE PEDAL. THIS HAPPENS NEARLY EVERY TIME WE DRIVE THE VEHICLE. THIS IS EXTREMELY DANGEROUS AND NEEDS TO BE RECALLED AND FIXED. *TR

NHTSA ODI #10508518

57,000 miles · Feb 17, 2013
Exterior LightingSeats

WHILE DRIVING ON THE FREEWAY, THE DRIVER'S SEAT MOVED BACKWARDS. I WAS UNABLE TO REACH THE BRAKE OR GAS AND WAS NEARLY IN AN ACCIDENT AS I WAS UNAWARE AS TO WHAT WAS GOING ON. THE DOME LIGHTS AND THE EXTERIOR EXIT LIGHTS LIT UP AS WELL. SINCE THIS DATE, THIS HAS HAPPENED NUMEROUS TIMES. IT IS A MAJOR SAFETY ISSUE AND SHOULD BECO…

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WHILE DRIVING ON THE FREEWAY, THE DRIVER'S SEAT MOVED BACKWARDS. I WAS UNABLE TO REACH THE BRAKE OR GAS AND WAS NEARLY IN AN ACCIDENT AS I WAS UNAWARE AS TO WHAT WAS GOING ON. THE DOME LIGHTS AND THE EXTERIOR EXIT LIGHTS LIT UP AS WELL. SINCE THIS DATE, THIS HAS HAPPENED NUMEROUS TIMES. IT IS A MAJOR SAFETY ISSUE AND SHOULD BECOME A RECALL. *TR

NHTSA ODI #10498430

62,000 miles · Feb 11, 2013
Seats

TL* THE CONTACT OWNS A 2008 MERCURY MOUNTAINEER. THE CONTACT STATED THAT THE DRIVER SEAT MEMORY ADJUSTING SYSTEM FAILED AND CAUSED THE DRIVER SEAT TO ERRONEOUSLY MOVE BACKWARDS. THE CONTACT WAS ABLE TO MOVE THE KEY FORWARD TO PLACE THE SEAT BACK TO NORMAL SETTING. THE VEHICLE WAS TAKEN TO A PRIVATE MECHANIC. THE VEHICLE WAS INSP…

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TL* THE CONTACT OWNS A 2008 MERCURY MOUNTAINEER. THE CONTACT STATED THAT THE DRIVER SEAT MEMORY ADJUSTING SYSTEM FAILED AND CAUSED THE DRIVER SEAT TO ERRONEOUSLY MOVE BACKWARDS. THE CONTACT WAS ABLE TO MOVE THE KEY FORWARD TO PLACE THE SEAT BACK TO NORMAL SETTING. THE VEHICLE WAS TAKEN TO A PRIVATE MECHANIC. THE VEHICLE WAS INSPECTED BY A PRIVATE MECHANIC WHO STATED THAT THE FAILURE WAS LOCATED AT THE IGNITION CYLINDER. THE VEHICLE WAS NOT REPAIRED. THE MANUFACTURER WAS MADE AWARE OF THE FAILURE. THE FAILURE MILEAGE WAS 62,000 AND THE CURRENT MILEAGE WAS 65,000. UPDATED 3/13/13 *CN UPDATED 03/19/13

NHTSA ODI #10497748

86,400 miles · Feb 7, 2013
Engine

VEHICLE IS MISSING, NOW SHAKING. NEED SPARK PLUG REPLACED BUT IS STUCK. NEEDED SPECIAL TOOL/EQUIPMENT TO GET OUT. WILL BE VERY COSTLY. I SHOULDN'T HAVE TO HAVE THIS PROBLEM SINCE I ONLY PURCHASED IT ALMOST 2 YRS AGO. I AM REALLY CONTEMPLATING SUING!! *TR

NHTSA ODI #10496692

Mileage unknown · Jan 30, 2013
Electrical SystemSeatsVehicle Speed Control

WHILE DRIVING ON HIGHWAY DRIVERS SEAT WENT FORWARD INDEPENDENTLY WITHOUT WARNING AND SEAT WENT IN THE LAST MEMORY POSITION AS FAR FORWARD AS POSSIBLE POSITION JAMMING DRIVERS FOOT ON GAS PEDAL FOR AN UNSPECIFIED AMOUNT OF TIME, AND DOME LIGHT CAME ON. DRIVER COULD NOT GET FOOT OFF GAS PEDAL AND COULD ONLY GET THE SEAT TO GO BACK…

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WHILE DRIVING ON HIGHWAY DRIVERS SEAT WENT FORWARD INDEPENDENTLY WITHOUT WARNING AND SEAT WENT IN THE LAST MEMORY POSITION AS FAR FORWARD AS POSSIBLE POSITION JAMMING DRIVERS FOOT ON GAS PEDAL FOR AN UNSPECIFIED AMOUNT OF TIME, AND DOME LIGHT CAME ON. DRIVER COULD NOT GET FOOT OFF GAS PEDAL AND COULD ONLY GET THE SEAT TO GO BACK BY MANUALLY USING THE SEAT BUTTONS. DRIVERS SEAT WAS SO FAR FORWARD IT WAS VERY DIFFICULT FOR DRIVER TO GET HAND BETWEEN DOOR AND SEAT TO GET TO BUTTON AND DRIVER WAS SO FRANTIC AND SCARED TRYING TO MAINTAIN VEHICLE CONTROL WHILE ATTEMPTING TO GET HAND BETWEEN SEAT AND DOOR TO REACH AND FIND CORRECT BUTTON TO MOVE SEAT BACK WHEN THERE ARE 3 DIFFERENT SEAT BUTTONS. DRIVER HAS DISABLED PERSON THAT SETS BEHIND DRIVERS SEAT SO DRIVERS SEAT UPON DISABLED PERSON ENTERING VEHICLE IS ALWAYS PUT IN THE FARTHEREST POSITION FORWARD TO ENABLE DISABLED PERSON SPACE TO GET IN VEHICLE. UPON FINALLY GETTING SEAT BACK DRIVER HAS NO RECOLLECTION OF ANY EVENTS OCCURRING AFTERWARD BECAUSE DRIVER WENT INTO SHOCK. TOOK VEHICLE TO DEALERSHIP TO FIND PROBLEM SHOP MANAGER GOT IN ATTEMPTING TO DUPLICATE PROBLEM INSTEAD THE SEAT WOULDN'T EVEN MOVE AS IT'S AUTOMATICALLY PROGRAMMED TO DO, THEN SEAT ROCKED BACK AND FORTH, THEN WENT ALL THE WAY FORWARD. DEALERSHIP MADE TWO NEW IGNITION KEYS TO REPLACE THE WORN KEY, REPLACED COMPUTER MEMORY CYLINDER IN STEERING WHEEL WHERE IT WAS FOUND IF WORN IGNITION KEY LOST CONTACT BECAUSE OF KEY BEING WORN, WITH CYLINDER, SEAT HAD A MIND OF IT'S OWN. THIS RESULTED IN A SPEEDING TICKET. *TR

NHTSA ODI #10495270

Official recalls

1

07V453000 · Power Train:automatic Transmission:cooling Unit And Lines

Sep 26, 2007

ON CERTAIN SPORT UTILITY VEHICLES EQUIPPED WITH THE 4.6L ENGINE AND 6R TRANSMISSION, THE BOLT SECURING THE TRANSMISSION OIL COOLER LINE FITTINGS AT THE TRANSMISSION MAY NOT HAVE BEEN SUFFICIENTLY TORQUED DURING VEHICLE ASSEMBLY. AS A RESULT, THE BOLT MAY LOOSEN AND THE TRANSMISSION OIL COOLER LINES MAY DISENGAGE FROM THE TRANSMISSION, CAUSING A TRANSMISSION FLUID LEAK.

Consequence & remedy

Consequence: IF LEAKING TRANSMISSION FLUID CONTACTS THE CATALYTIC CONVERTER, IT MAY POSE A RISK OF FIRE.

Remedy: DEALERS WILL INSPECT AND HAVE THE TRANSMISSION COOLER LINE ATTACHMENT BOLT TIGHTENED FREE OF CHARGE. THE RECALL BEGAN ON AUGUST 30, 2007. OWNERS MAY CONTACT FORD AT 1-800-392-3673.

Model-level recall history does not show whether a particular VIN is affected or has received a repair. Check a VIN with NHTSA ↗

NHTSA investigations

1

PE08060 · Tire Valve Cracking

Opened Oct 14, 2008 · Closed Apr 9, 2009

Status: closed (inferred from source dates) · Tires:valve

ON OCTOBER 14, 2008, ODI OPENED PE08-060 TO INVESTIGATE ALLEGATIONS OF CRACKED AND LEAKING SNAP-IN TIRE VALVES IN MODEL YEAR (MY) 2007 VEHICLES MANUFACTURED BY FORD MOTOR COMPANY.THE VALVES WERE SUPPLIED TO FORD BY TOPSEAL AUTO-PARTS, A SUBSIDIARY OF THE SHANGHAI BAOLONG AUTOMOTIVE CORPORATION IN CHINA.VALVES MADE BY TOPSEAL FOR AFTERMARKET SALE WERE THE SUBJECT OF TWO RECENT SAFETY RECALLS BY TECH INTERNATIONAL (08T-018) AND DILL AIR CONTROLS (08T-028), THE LATTER OF WHICH WAS INVESTIGATED BY ODI IN PE08-036 AND EA08-022.THE DEFECT CONDITIONS ADDRESSED BY THE AFTERMARKET TIRE VALVE RECALLS BOTH INVOLVED INADEQUATE RESISTANCE TO OZONE CRACKING DUE TO ISSUES WITH THE SUPPLY OF ANTI-OZONANT CHEMICALS TO TOPSEAL FOR A PERIOD FROM JULY TO MID-NOVEMBER 2006.THE AFTERMARKET VALVES WERE COMPOUNDED WITH A BLEND OF EPDM AND NATURAL RUBBER, USING A RELATIVELY LOW PERCENTAGE OF EPDM (EPDM PROVIDES INHERENT RESISTANCE TO OZONE CRACKING).HENCE, THE NEED FOR ANTI-OZONANT CHEMICALS AND THE PROBLEMS WITH CRACKING WHEN THOSE CHEMICALS WERE MISSING OR OUT OF SPECIFICATION IN SOME LOTS OF VALVES.BOTH RECALL CAMPAIGNS INVOLVED INSPECTION PROGRAMS TO IDENTIFY AND REPLACE VALVES WITH VISIBLE SURFACE CRACKING.ALTHOUGH THE TOPSEAL VALVES SUPPLIED TO FORD ALSO APPEAR TO HAVE BEEN AFFECTED BY THE ANTI-OZONANT SUPPLY ISSUES IN MID TO LATE-2006, FORD INDICATED THAT ITS VALVES WERE MADE AT A DIFFERENT TOPSEAL PRODUCTION LINE AND WERE COMPOUNDED WITH A HIGHER PERCENTAGE OF EPDM RUBBER TO MEET MORE STRINGENT SPECIFICATIONS FROM FORD.ODI'S ANALYSIS OF COMPLAINT AND WARRANTY DATA PROVIDED BY FORD SHOWED THAT PROBLEMS WITH CRACKED TIRE VALVES WERE SIGNIFICANTLY HIGHER FOR MY 2007 VEHICLES PRODUCED FROM DECEMBER 2006 THROUGH MARCH 2007.FORD RESPONDED BY IMPLEMENTING CHANGES IN ITS MATERIAL SPECIFICATIONS FOR SNAP-IN RUBBER TIRE VALVES AND ALSO INCREASING THE QUALITY AND ACCEPTANCE STANDARDS FOR VALVES IMPORTED FOR USE IN ITS VEHICLES.WHILE THE COMPLAINT AND WARRANTY CLAIM RATES ARE ELEVATED FOR SUBJECT VEHICLES PRODUCED FROM DECEMBER 2006 THROUGH MARCH 2007, THE RATES OF LEAKING VALVES ARE WELL BELOW ONE PERCENT OF PRODUCTION FOR EACH OF THE PEAK MONTHS FOR ALL OF THE AFFECTED MODELS.A SUBSTANTIAL MAJORITY OF THE SUBJECT VEHICLES ARE EQUIPPED WITH TIRE PRESSURE MONITORING SYSTEMS (TPMS) WHICH WARN THE DRIVER WHEN ANY TIRE PRESSURES DROPS BELOW 25 PERCENT OF RECOMMENDED INFLATION PRESSURE. AS OUTLINED IN A LETTER TO ODI DATED APRIL 6, 2009, FORD HAS AGREED TO SEND LETTERS TO OWNERS OF CERTAIN MY 2007 AND 2008 FORD, LINCOLN AND MERCURY VEHICLES TO PROVIDE INFORMATION ABOUT THE CRACKING CONCERN. LETTERS WILL BE SENT TO OWNERS OF VEHICLES BUILT FROM NOVEMBER 2006 THROUGH MAY 2007.OWNERS CAN OPT FOR A FREE DEALER INSPECTION.VALVES EXHIBITING SURFACE CRACKS OR AIR LEAKAGE RELATED TO OZONE ATTACK WILL BE REPLACED BY FORD UNDER ITS NORMAL WARRANTY TERMS.FORD EXPECTS TO SEND THE LETTER BY APPROXIMATELY MID-MAY 2009. BASED ON THE USE OF TPMS IN THE MAJORITY OF SUBJECT VEHICLES AND THE RELATIVELY LOW RATES OF REPAIRS ASSOCIATED WITH LEAKING VALVES AND RESULTANT TIRE DAMAGE, ODI BELIEVES THAT THE ACTIONS FORD HAS AGREED TO TAKE WILL PROVIDE EFFECTIVE AND EXPEDITIOUS RESOLUTION FOR VEHICLES THAT WERE BUILT DURING THE PERIOD WHEN VALVES WITH INADEQUATE RESISTANCE TO OZONE CRACKING WERE MOST LIKELY TO HAVE BEEN USED IN VEHICLE PRODUCTION.FURTHER INVESTIGATION OF THIS MATTER WOULD NOT BE AN EFFICIENT ALLOCATION OF AGENCY RESOURCES.ACCORDINGLY, THIS INVESTIGATION IS CLOSED.THE CLOSING OF THIS INVESTIGATION DOES NOT CONSTITUTE A FINDING BY NHTSA THAT A SAFETY-RELATED DEFECT DOES NOT EXIST.THE AGENCY WILL CONTINUE TO