NHTSA owner reports · September 18, 2026 snapshot.
Power Train complaints
9 reportsClear category filter15,000 miles · Oct 18, 2020
EnginePower TrainUnknown Or Other
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. …
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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 ODI #11365014
29,000 miles · Mar 7, 2020
Electrical SystemPower TrainService Brakes
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 FAILE…
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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 ODI #11316784
129,000 miles · Apr 17, 2019
Fuel/propulsion SystemPower TrainUnknown Or Other
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 DRIV…
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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 ODI #11196908
70,500 miles · Sep 6, 2016
Power TrainCrash
TL* THE CONTACT OWNS A 2008 MERCURY MOUNTAINEER. WHILE IN PARK AND TURNED OFF, THE VEHICLE ROLLED FORWARD AND COLLIDED WITH ANOTHER VEHICLE. THERE WERE NO WARNING INDICATORS ILLUMINATED OR INJURIES. A POLICE REPORT WAS FILED. THE VEHICLE WAS TAKEN TO A DEALER, BUT WAS NOT DIAGNOSED. THE MANUFACTURER WAS MADE AWARE OF THE FAILURE…
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TL* THE CONTACT OWNS A 2008 MERCURY MOUNTAINEER. WHILE IN PARK AND TURNED OFF, THE VEHICLE ROLLED FORWARD AND COLLIDED WITH ANOTHER VEHICLE. THERE WERE NO WARNING INDICATORS ILLUMINATED OR INJURIES. A POLICE REPORT WAS FILED. THE VEHICLE WAS TAKEN TO A DEALER, BUT WAS NOT DIAGNOSED. THE MANUFACTURER WAS MADE AWARE OF THE FAILURE. THE FAILURE MILEAGE WAS 70,500.
NHTSA ODI #10903893
36,000 miles · Aug 3, 2016
Power Train
TL* THE CONTACT OWNS A 2008 MERCURY MOUNTAINEER. WHILE DRIVING AT LOW SPEEDS, THE VEHICLE HESITATED TO SWITCH GEARS WITHOUT WARNING. IN ADDITION, WHEN THE VEHICLE SHIFTED GEARS, IT JERKED VIOLENTLY. THE VEHICLE WAS TAKEN TO THE DEALER ON MULTIPLE OCCASIONS; HOWEVER, THE FAILURE WAS UNABLE TO BE DUPLICATED. THE VEHICLE WAS NOT RE…
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TL* THE CONTACT OWNS A 2008 MERCURY MOUNTAINEER. WHILE DRIVING AT LOW SPEEDS, THE VEHICLE HESITATED TO SWITCH GEARS WITHOUT WARNING. IN ADDITION, WHEN THE VEHICLE SHIFTED GEARS, IT JERKED VIOLENTLY. THE VEHICLE WAS TAKEN TO THE DEALER ON MULTIPLE OCCASIONS; HOWEVER, THE FAILURE WAS UNABLE TO BE DUPLICATED. THE VEHICLE WAS NOT REPAIRED. THE MANUFACTURER WAS NOT NOTIFIED OF THE FAILURE. THE FAILURE MILEAGE WAS 36,000.
NHTSA ODI #10892789
435,000 miles · Sep 19, 2014
Power Train
MY VEHICLE'S WARRANTY IS 5 YEARS/60,000 MILES. SINCE THIS WEEK I HAVE HEARD A METAL SCRATCH NOISE FROM THE VEHICLE DURING DRIVING ON THE ROAD. I BROUGHT MY VEHICLE TO FORD DEALERSHIP SHOP, IT IS FOUND THAT REAR AXLE SEAL HAS BEEN DAMAGED WITH OIL LEAKAGE. UNFORTUNATE, THE REPAIR IS NOT COVERED BY WARRANTY BECAUSE IT HAS BEEN 5 Y…
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MY VEHICLE'S WARRANTY IS 5 YEARS/60,000 MILES. SINCE THIS WEEK I HAVE HEARD A METAL SCRATCH NOISE FROM THE VEHICLE DURING DRIVING ON THE ROAD. I BROUGHT MY VEHICLE TO FORD DEALERSHIP SHOP, IT IS FOUND THAT REAR AXLE SEAL HAS BEEN DAMAGED WITH OIL LEAKAGE. UNFORTUNATE, THE REPAIR IS NOT COVERED BY WARRANTY BECAUSE IT HAS BEEN 5 YEAR, ALTHOUGH THE MILEAGE IS ONLY 43500 MILES. *TR
NHTSA ODI #10637615
117,000 miles · Jul 24, 2012
Power Train
TL* THE CONTACT OWNS A 2008 MERCURY MOUNTAINEER. THE CONTACT STATED THAT WHILE DRIVING 60 MPH, HE HEARD A BEEPING SOUND. A WARNING LIGHT ILLUMINATED ON THE INSTRUMENT PANEL TO PULL OVER FOR SAFETY. HE WAS ABLE TO STOP AND RESET THE VEHICLE. THE VEHICLE WAS TAKEN TO THE DEALER FOR DIAGNOSIS. THE DEALER STATED THAT THEY NEEDED TO …
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TL* THE CONTACT OWNS A 2008 MERCURY MOUNTAINEER. THE CONTACT STATED THAT WHILE DRIVING 60 MPH, HE HEARD A BEEPING SOUND. A WARNING LIGHT ILLUMINATED ON THE INSTRUMENT PANEL TO PULL OVER FOR SAFETY. HE WAS ABLE TO STOP AND RESET THE VEHICLE. THE VEHICLE WAS TAKEN TO THE DEALER FOR DIAGNOSIS. THE DEALER STATED THAT THEY NEEDED TO REPAIR THE POWER TRAIN AXLE. THE VEHICLE WAS NOT REPAIRED. THE MANUFACTURER WAS NOT CONTACTED. THE FAILURE AND THE CURRENT MILEAGE WAS 117,000.
NHTSA ODI #10467555
Mileage unknown · Nov 16, 2010
Engine And Engine CoolingParking BrakePower Train
MY 2008 MERCURY MOUNTAINEER IS HAVING A STRONG TRANSMISSION KICK WHEN DOWN SHIFTING AND A SQUICKING NOISE WHICH I THINK IS COMING FROM THE BREAK AND MY DEALER KEPT ON REPORTING BACK TO ME AS "UNABLE TO DUPLICATE" THE PROBLEM. THIS SUV WERE BOUGHT AS BRAND NEW AND I FEEL LIKE THAT THE CAR IS GOING TO BREAK APART OR LOOSE MY BREAK…
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MY 2008 MERCURY MOUNTAINEER IS HAVING A STRONG TRANSMISSION KICK WHEN DOWN SHIFTING AND A SQUICKING NOISE WHICH I THINK IS COMING FROM THE BREAK AND MY DEALER KEPT ON REPORTING BACK TO ME AS "UNABLE TO DUPLICATE" THE PROBLEM. THIS SUV WERE BOUGHT AS BRAND NEW AND I FEEL LIKE THAT THE CAR IS GOING TO BREAK APART OR LOOSE MY BREAK EVERYTIME I FEEL THOSE RATTLES. EVERYTIME I WOULD GO TO MY DEALER FOR A SERVICE, I WOULD ALWAYS MENTION ABOUT THE PROBLEM WHICH THEY CAN'T FIX! *TR
NHTSA ODI #10365945
38,319 miles · Feb 11, 2010
Power TrainService Brakes, HydraulicTraction Control System
MY FORD MOUNTAINEER 2008 TRANSMISSION IS ERRATIC AND THE TRACTION CONTROL LIGHT COMES ON WHEN THE SLIPPING IS TAKING PLACE. BRAKING IS ALSO ERRATIC AS I FEEL A BUMPING WHILE BRAKING TO A STOP. IT IS VERY DANGEROUS AS IT FEELS LIKE TO TRANSMISSION AND BRAKE/TRACTION CONTROL SYSTEM IS ABOUT TO GO. I CALLED FORD AND THEY HAVE KN…
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MY FORD MOUNTAINEER 2008 TRANSMISSION IS ERRATIC AND THE TRACTION CONTROL LIGHT COMES ON WHEN THE SLIPPING IS TAKING PLACE. BRAKING IS ALSO ERRATIC AS I FEEL A BUMPING WHILE BRAKING TO A STOP. IT IS VERY DANGEROUS AS IT FEELS LIKE TO TRANSMISSION AND BRAKE/TRACTION CONTROL SYSTEM IS ABOUT TO GO. I CALLED FORD AND THEY HAVE KNOW OF THE PROBLEM SINCE 2006 AS THE TRANSMISSION USED (6R60) CONTINUALLY NEEDS SOFTWARE UPDATES. ACCORDING TO THE DEALER, MOST ALL OF THESE VEHICLES WITH THIS TRANSMISSION EVENTUALLY HAVE THE PROBLEM BUT VERY RARELY WITH THE BASE WARRANTY PERIOD, SO NOW ALL OF US HAVE TO PAY BUT FORD HAS KNOW OF THE PROBLEM EVEN B/4 MY VEHICLE WAS MANUFACTURED.........WHAT DO I DO, FORD IS NOT RECALLING FOR THIS A SHIFTING THE RISK OF THE ACCIDENT AND REPAIR TO THE CONSUMER. PLEASE HELP AND LET ME KNOW WHAT MY NEXT STEP MIGHT BE....THANK YOU *TR
NHTSA ODI #10308801
NHTSA investigations
1PE08060 · 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