RoadVitals

2004 Mercury Mountaineer Transmission Problems

Owner-reported complaints naming the transmission system, filed with NHTSA

Data refreshed

Transmission reportsComplaints are reports submitted to NHTSA by owners and drivers. NHTSA does not verify most reports before publishing them, and a complaint does not establish that a defect exists. Volume is influenced by how many of a vehicle were sold, how long it has been on the road, and how much attention an issue has received.
36
Latest Jun 21, 2021
Share of all reportsThis category as a share of every owner report on file for this model year. One report can name more than one component, so the categories overlap.
17%
of 210 total
Crash or fire reportedReports in this category whose submitter recorded that a crash or a fire occurred. The reporter's own answer on the NHTSA form, not a verified finding.
3
Injuries or deaths reportedTotals the submitters entered on their own reports in this category. Not verified by NHTSA and not a casualty statistic.
3

What this page shows

Reports naming the automatic or manual transmission, including shifting behaviour, shudder, slipping and transmission control modules. Every record below is an owner-reported complaint about the 2004 Mercury Mountaineer submitted to NHTSA — not a confirmed defect, not a recall and not a manufacturer bulletin. 36 reports on file name it.

Complaints are reports submitted by owners and drivers to NHTSA. They are not verified and do not establish that a defect exists.

Owner reports naming transmission

The 25 most recent of 36, in the owner's own words

Transmission
Filed Jun 21, 2021

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 ID
11421672
Incident
Aug 19, 2020
Transmission
Filed Sep 12, 2011

TL* THE CONTACT OWNS A 2004 MERCURY MOUNTAINEER. THE CONTACT STATED THAT A LOUD POPPING NOISE COULD BE HEARD WHENEVER THE VEHICLE WAS SHIFTED INTO REVERSE. THE CONTACT ALSO STATED THAT THE VEHICLE WOULD JERK INTO REVERSE AND A BURNING ODOR WAS PRESENT DURING ONE OF THE OCCURRENCES. THE VEHICLE WAS TAKEN TO AN INDEPENDENT REPAIR SHOP ON VARIOUS OCCASIONS AND THE CONTACT WAS INFORMED THAT THE TRANSMISSION FLUID NEEDED TO BE REPLACED. THE TRANSMISSION FLUID WAS REPLACED ON NUMEROUS OCCASIONS, BUT THE FAILURE CONTINUED. THE MANUFACTURER WAS MADE AWARE OF THE FAILURE. THE FAILURE MILEAGE WAS APPROXIMATELY 100,000. UPDATED 10/4/11 *CN UPDATED 10/21/11

NHTSA ID
10425030
Incident
Jan 1, 2009
Mileage
100,000 mi
Transmission
Filed Jun 27, 2011
Crash reported1 injury reported

TL* THE CONTACT OWNS A 2004 MERCURY MOUNTAINEER. THE CONTACT STATED THAT THE VEHICLE WAS PARKED, WITH THE REAR LIFT GATE OPENED, WHEN IT BEGAN TO ROLL BACKWARDS. WHILE ATTEMPTING TO ENTER THE MOVING VEHICLE, THE CONTACT WAS KNOCKED DOWN AND SUSTAINED INJURIES. THE VEHICLE CONTINUED TO ROLL BACKWARDS UNTIL CRASHING INTO A TREE. THE VEHICLE WAS NOT TAKEN TO HAVE THE FAILURE DIAGNOSED OR REPAIRED. THERE WAS AN INVESTIGATION OPEN UNDER NHTSA ACTION NUMBER: EA09013 (STEERING POWER TRAIN:AUTOMATIC TRANSMISSION:GEAR POSITION INDICATION (PRNDL) STEERING:COLUMN STEERING:COLUMN LOCKING:ANTI-THEFT DEVICE) THAT MAY BE RELATED TO THE FAILURE. THE FAILURE MILEAGE WAS 82,000. THE VIN WAS UNAVAILABLE.

NHTSA ID
10409097
Incident
Jun 24, 2011
Mileage
82,000 mi
Body & structureBrakesElectrical+4 more
Filed Jun 22, 2011
Crash reported

I HAVE A USED 2004 MERCURY MOUNTAINEER I PURCHASED IN 12/2008 IT HAD 53,000 MILES. I HAVE DONE ALL OF THE REQUIRED MAINTENANCE OIL CHANGES,BRAKE PADS,FLUID CHANGES, AND 60,000-MILE SERVICE PACKAGE. I HAVE NOTHING BUT PROBLEMS WITH THE VEHICLE. THE FAILURES I HAVE ARE AS FOLLOWS: 1. FRONT/REAR BRAKE PADS,FRONT/REAR ROTORS,SPARK PLUGS,-DEFECTED PARTS 2. BATTERY 3. TIRES-CONSTANT FLATS 4. LUG TORQUE-DRIVER FRONT/REAR 5. HOOD SHOCKS,TIRE PRESSURE SENSOR LIGHT 6. TRANSMISSION FLUID LEAK/ FRONT PUMP SEAL LEAK 7. NOISE AT HARMONIC BALANCER 8. ROAR NOISE AND SHAKES AT ALL SPEEDS 9. HUB ASSEMBLIES MAKING NOISE FRONT LEFT/RIGHT SIDE; UNLESS REPLACED VEHICLE UNSAFE TO DRIVE PER FORD DEALERSHIP 10. BRAKE PADS- FRONT/REAR NEED TO BE REPLACED GOING BAD (SECOND TIME NEEDING TO BE REPLACED) 11. NEEDS FRONT ALIGNMENT-PULLS TO THE RIGHT SIDE 12. FUEL FILTER 13. NEEDS ALL NEW TIRES 14. IGNITION COIL -DEFECTIVE NEEDS TO BE REPLACED 15. VEHICLE GEAR SHIFTER IS STUCK WHILE DRIVING WON'T SHIFT AT ALL SOMETIMES STAYS STUCK AT CERTAIN SPEED WON'T MOVE 16.UNIVERSAL JOINTS 17. AXLE HOUSING GASKET REPAIRS AND CORRECTIONS DONE ON VEHICLE: 1.NEW BRAKE PADS ON FRONT/REAR,REPLACED SPARK PLUGS, RESURFACED FRONT/REAR ROTORS.- 8/2009 2.BATTERY REPLACED- 4/2010 3.TIRES-FLATS REPAIRED/PATCHED -8/2010,11/2010,2/2011 4.HAVE NOT REPAIRED/REPLACED 5.HAVE NOT REPAIRED/REPLACED 6.REPLACED SEAL, TRANSMISSION FILTER AND FLUID CHANGED,REPLACED SEAL-OIL-6/2011 7.HAVE NOT REPAIRED/REPLACED 8. VEHICLE IS SHAKING AND LOUD ROAR NOISE HASN'T BEEN FIXED-6/2011 9.HUB ASSEMBLIES FRONT LEFT/RIGHT SIDE REPLACED -6/2011 10.HAVE NOT REPLACED/REPAIRED 11.HAVE NOT REPLACED/REPAIRED 12.FUEL FILTER REPLACED-6/2011 13. BOUGHT BRAND NEW SET OF TIRES -6/2011 14.IGNITION COIL REPLACED-10/2009 15. HAVE NOT REPAIRED/REPLACED 16. HAVE NOT REPAIRED/REPLACED 17. AXLE HOUSING GASKET REPLACED-04/2011. *TR

NHTSA ID
10408434
Incident
May 24, 2010
Mileage
70,000 mi
Powertrain (other)Transmission
Filed Jun 1, 2011

AUTOMATIC TRANSMISSION SHIFTER COMPLETELY BROKE OFF WHEN CHANGING FROM PARK TO DRIVE ON A 2004 MERCURY MOUNTAINEER. *TR

NHTSA ID
10404052
Incident
May 30, 2011
Mileage
114,000 mi
Transmission
Filed Jan 25, 2011

TL* THE CONTACT OWNS A 2004 MERCURY MOUNTAINEER. THE CONTACT STATED THAT THE VEHICLE BEGAN TO EXPERIENCE A VERY HARD SHIFT WHEN CHANGING GEARS AND DRIVING ANY SPEED. THE VEHICLE WOULD ALSO SURGE FORWARD SLIGHTLY DURING THE HARD SHIFTS. THE VEHICLE WAS TAKEN TO AN AUTHORIZED DEALER WHERE THEY WERE UNABLE TO DIAGNOSE THE FAILURE. THE CONTACT ALSO STATED THAT THE GEAR SHIFT LEVER FELT ABNORMALLY LOOSE WHENEVER OPERATED. THE VEHICLE WAS NOT REPAIRED. THE FAILURE MILEAGE WAS 68,000 AND THE CURRENT MILEAGE WAS 71,000. UPDATED 3/7/11 *CN UPDATED 03/14/11

NHTSA ID
10378616
Incident
Jul 1, 2010
Mileage
68,000 mi
Transmission
Filed Dec 28, 2010

HAVE A LITTLE OVER 67,000 MILES ON VEHICLE. DRIVING AT HIGHWAY SPEED TRANSMISSION INDICATOR CAME ON, O/D INDICATOR FLASHES AND SERVICE ENGINE INDICATOR CAME ON. TRANSMISSION SHIFTS ROUGHLY FROM 1ST GEAR TO 2ND, AND DOES NOT HAVE OVERDRIVE. SERVICE STATION RAN DIAGNOSTIC WHICH RESULTED IN 4 SERVICE CODES: PO732, PO735, PO775, AND PO1744. THESE CODES WERE ALSO CONFIRMED BY AAMCO TRANSMISSION. THE RESULT APPEARS TO BE TRANSMISSION SOLENOID PACK, ALONG WITH REBUILD OF THE TRANSMISSION. *TR

NHTSA ID
10373186
Incident
Dec 25, 2010
Mileage
67,848 mi
Other / unspecifiedTransmission
Filed Dec 18, 2010

2004 MERCURY MOUNTAINEER V8, 47,000 MILES. TRANSMISSION IS SHOT. IT SLIPPED IN AND OUT OR REVERSE (CREATING A VERY DANGEROUS SITUATION SINCE I COULD NOT CONTROL THE VEHICLE WHEN IT WAS IN REVERSE) AND IT STRUGGLED TO SHIFT GEARS IN DRIVE. NO WARNING LIGHT BEFORE THE PROBLEMS BEGAN. THE VEHICLE AGED OUT OF WARRANTY IN JULY 2010. FORD WILL NOT PAY FOR ANYTHING (ALTHOUGH THE DEALER IS CUTTING ME A BREAK ON THE SERVICE COSTS). *TR

NHTSA ID
10371151
Incident
Dec 15, 2010
Mileage
47,000 mi
Transmission
Filed Oct 6, 2010

TL*THE CONTACT OWNS A 2004 MERCURY MOUNTAINEER. THE CONTACT NOTICED THAT WHEN DRIVING, THE TRANSMISSION WAS UNABLE TO BE SHIFTED INTO SECOND OR FIFTH GEAR. THE VEHICLE WAS TAKEN TO AN AUTHORIZED DEALER WHO INFORMED THE CONTACT THAT THE TRANSMISSION NEEDED TO BE REPLACED. THE CONTACT CALLED THE MANUFACTURER WHO TOOK A COMPLAINT BUT OFFERED NO FURTHER ASSISTANCE. THE FAILURE MILEAGE WAS APPROXIMATELY 131,000.

NHTSA ID
10359441
Incident
Oct 2, 2010
Mileage
131,000 mi
Transmission
Filed Sep 29, 2010

2004 MERCURY MOUNTAINEER. TRANSMISSION FAILING 69,469 MILES ON VEHICLE. TAILGATE CRACKED ALSO. NOT SURE IF WORTH REPAIRING. *TR

NHTSA ID
10358356
Incident
Sep 20, 2010
Mileage
69,469 mi
Transmission
Filed Apr 8, 2010

TRANSMISSION REBUILD AT 100,000 MILES, 6 YRS OLD. FEEL LIKE IT IS TOO SOON TO HAVE THIS KIND OF PROBLEM. I UNDERSTAND THIS HAS BEEN A QUITE A COMMON PROBLEM TOO. THE BODY PANEL UNDER THE BACK GLASS IS ALSO CRACKED. *TR

NHTSA ID
10324558
Incident
Apr 1, 2010
Mileage
100,000 mi
Transmission
Filed Feb 9, 2010

2004 MERCURY MOUNTAINEER SOMETIMES JERK REALLY HARD WHEN PUT IN REVERSE GEAR. TWICE, IT JERKED SO HARD, I HAD TO SLAM ON THE BRAKES, CAUSE IT WAS BACKING BACK FAST. REALLY SCARED ME. OTHER TIMES, IT JERKS HARD, BUT STAYS PUT UNTIL I PRESS THE GAS. I NEVER KNOW WHEN THIS WILL HAPPEN, THERE IS NO WARNING. TOOK TRUCK TO MERCURY DEALER ONCE, OVER A YEAR AGO. SAID THEY CHECKED, BUT COULDN'T FIND ANYTHING. VEHICLE IS PAID FOR. NO LONGER HAVE WARRANTY. ABOUT 3 WEEKS AGO WHEN THE LAST JERK OCCURRED. *TR

NHTSA ID
10308077
Incident
Jan 22, 2010
Transmission
Filed Jan 10, 2010

2004 MERCURY MOUNTAINEER WITH 64,000 MILES, TRANSMISSION STARTED TO MAKE NOISES, ABOUT A WEEK LATER IT WOULD NOT SHIFT. SHOP SAID SOME GROVE IN SOMETHING IN THE TRANSMISSION. HAD IT FIXED FOR $3,000. LATER FOUND OUT THE TRANSMISSION WAS OUT AT 10,000 MILES BEFORE WE BOUGHT IT. ALSO HAD A 2004 LINCOLN AVIATOR WITH 54,000 ON IT AND HAD TO FIX THE TRANSMISSION, SHOP SAID THERE WAS SOME GROVE ON SOME PART IN THE TRANSMISSION. VERY EXPENSIVE PROBLEMS WITH LOW MILES. *TR

NHTSA ID
10298872
Incident
Oct 23, 2008
Mileage
64,000 mi
Transmission
Filed Dec 23, 2009

HERE IS THE E-MAIL I SENT TO FORD REGARDING WHAT IS GOING ON. : MY NAME IS LEANNE FREEMAN I OWN A 2004 MERCURY MOUNTAINEER,I HAVE BEEN HAVING TRANSMISSION TROUBLE WITH THE CAR SINCE I BOUGHT IT. I AM CONCERNED THAT I AM NOT THE ONLY PERSON HAVING THIS TROUBLE I LOOKED ON THE INTERNET AND WAS ABLE TO FIND 25,000 PAGES OF PEOPLE HAVING THE SAME TROUBLE MANY OF WHICH HAVE MADE CONTACT WITH FORD. I AM CONCERNED THAT FORD KNOWS THERE IS A PROBLEM AND HAS DONE NOTHING TO FIX IT. WHY HAVE THEY NOT DONE SOME KIND OF RECALL I COULD SEE IF THIS PROBLEM HAD ONLY HAPPENED TO A HAND FULL OF PEOPLE BUT THERE IS OVER 25,000 PAGES WITH EACH PAGE HAVING OVER 50 POST PER PAGE OF OWNERS HAVING THIS SAME PROBLEM ???? I HAVE SAVED ALL THE INFO FROM ALL THE PEOPLE HAVING THIS PROBLEM IF YOU WOULD LIKE ME TO FORWARD IT TO YOU I WILL BE HAPPY TO THANK YOU FOR YOUR TIME LEANNE FREEMAN HTTP://WWW.CARCOMPLAINTS.COM/MERCURY/MOUNTAINEER/2002/TRANSMISSION/OD_LIGHT_CAME_ON.SHTML HTTP://WIKI.ANSWERS.COM/Q/WHY_WOULD_THE_TRANSMISSION_ON_A_MERCURY_MOUNTAINEER_KEEP_SHIFTING_HARD HTTP://WWW.FORD-PROBLEMS.COM/EXPLORER-TRANSMISSION-PROBLEMS.HTM HTTP://TOWNHALL-TALK.EDMUNDS.COM/DIRECT/VIEW/.F1C1B35 HTTP://WWW.GOOGLE.COM/SEARCH?HL=EN&EI=JSUKS6K0ENS0TGEIG4JJBW&SA=X&OI=SPELL&RESNUM=1&CT=RESULT&CD=1&VED=0CDYQBSGA&Q=TRANSMISSION+PROBLEMS+ON+MERCURY+MOUNTAINEER&SPELL=1 HTTP://WWW.CARSURVEY.ORG/REVIEWS/MERCURY/MOUNTAINEER/R65436/COMMENTS/PAGE-2/ HTTP://WWW.CARCOMPLAINTS.COM/MERCURY/MOUNTAINEER/2002/TRANSMISSION/TRANSMISSION_FAILURE.SHTML HTTP://WWW.CARSURVEY.ORG/REVIEWS/MERCURY/MOUNTAINEER/R65436/COMMENTS/ HTTP://TOWNHALL-TALK.EDMUNDS.COM/DIRECT/VIEW/.F0FF573. *TR

NHTSA ID
10296777
Incident
Dec 12, 2009
Mileage
100,000 mi
Transmission
Filed Sep 28, 2009

PROBLEMS WITH TRANSMISSION IN MY 2004 MERCURY MOUNTAINEER. WHEN IN PARK AND SHIFTING IN REVERSE IT DELAYS AND THEN A LOUD HARD CLUNK. IT ALSO CLUNKS FROM GOING INTO SECOND GEAR. MY CAR IS OUT OF THE STANDARD 36,000 MILES/ 3 YEAR WARRANTY. I AM VERY DISAPPOINT IN FORD. THE CAR HASN'T EVEN HIT 30,000 MILES YET. *TR

NHTSA ID
10285591
Incident
Sep 14, 2004
Mileage
29,225 mi
Transmission
Filed May 20, 2009

DURING THE LATER PART OF JUNE 2008, I PURCHASED A 2004 MERCURY MOUNTAINEER FROM CARMAX AT THE CHICAGO RIDGE LOCATION IN ILLINOIS WHICH HAD 28,579 MILES. ACCORDING TO THE CARFAX REPORT AND SALES PERSON, THIS VEHICLE HAD SUCCESSFULLY PASSED THE 100 POINT INSPECTION, AND UNDER NORMAL DRIVING CONDITION THIS CAR HAD NO MAJOR MECHANICAL OR ELECTRICAL DEFECTS. WITHIN THE FIRST 30 DAYS I NOTICED A SLIGHT DELAY BETWEEN SHIFTING GEARS BEGAN TO MANIFEST, SO NATURALLY, I TOOK THE CAR IMMEDIATELY BACK TO CARMAX. SINCE THE PROBLEM EXCEEDED THEIR ABILITY TO FIX IT, I WAS INSTRUCTED BY CARMAX TO TAKE THE CAR BACK TO ITS ORIGINAL MANUFACTURER, WHICH IS YOUR ORGANIZATION, FORD. ON JULY 1ST 2008 A FORD MECHANIC AT THE 95TH WESTERN LOCATION REPORTED THAT THEY REPROGRAMMED THE TRUCK, REPLACED VIBRATION DAMPER, AND WORKED ON THE PULLEY-CRANKSHAFT. THE DELAY CEASED FOR A SHORT PERIOD OF TIME. WITHIN THE NEXT FEW MONTHS, THE PROBLEM REAPPEARED IN AN EVEN GREATER CAPACITY THAN BEFORE AS NOW THE GEARS BETWEEN THE FORWARD AND REVERSE PROCEEDED TO PRODUCE A KICK BACK MOTION. I DECIDED TO GET A SECOND WRITTEN MECHANICAL OPINION FROM MEINEKE TRANSMISSION AND MUFFLER ON 107TH WESTERN, ONLY TO BE TOLD THAT THE TRANSMISSION WAS BAD. SINCE THE 100 POINT INSPECTION ON THE CARFAX DID NOT INDICATE SUCH, AS I WOULD LIKE TO BELIEVE THAT CARMAX WOULD NOT HAVE SOLD ME THE CAR IN THAT CONDITION, I DECIDED TO GET YET ANOTHER WRITTEN OPINION. ONCE AGAIN, BY ANOTHER INDEPENDENT MECHANIC AT LUCHA'S AUTO REPAIR IN SOUTH CHICAGO, I WAS TOLD THAT NOT ONLY WAS THE TRANSMISSION BAD BUT THAT IT HAD TO HAVE BEEN THAT WAY UPON MY ORIGINAL PURCHASE AS THE YEAR OF THE CAR (2004) IS NOT COMMENSURATE WITH THE DEGREE OF DAMAGE TO THE TRANSMISSION AS THE CAR IS LESS THAN SIX YEARS OLD. LET ME ALSO STATE THAT THE CAR IS ALSO UNDER 50,000 MILES. *TR

NHTSA ID
10269518
Incident
Apr 18, 2009
Mileage
28,000 mi
Transmission
Filed Mar 9, 2009
Crash reported1 injury reported

TL*THE CONTACT OWNS A 2004 MERCURY MOUNTAINEER. WHILE THE VEHICLE WAS TURNED OFF, THE CONTACT'S TWO YEAR OLD SON GRABBED THE KEY AND PLACED IT IN THE IGNITION. HE ATTEMPTED TO START THE VEHICLE, BUT THE ENGINE NEVER IGNITED. THE CHILD THEN PROCEEDED TO PLACE THE SHIFTER IN EITHER NEUTRAL OR DRIVE AND THE VEHICLE BEGAN TO ROLL APPROXIMATELY 350 FEET DOWN A HILL. THE VEHICLE CRASHED INTO A BRUSH-HOG AND A HONDA VEHICLE BEFORE FINALLY COMING TO A STOP WHEN IT CRASHED INTO A BUILDING. THE CHILD SUSTAINED A CONTUSION AND LACERATIONS TO HIS HEAD, CHEST, AND LEGS. THE VEHICLE WAS TOWED AND IS CURRENTLY AT A SALVAGE YARD. THE POLICE STATED THAT EVEN THOUGH THE VEHICLE WAS NOT STARTED, THE GEARS WERE ABLE TO BE SHIFTED, WHICH SHOULD NOT HAVE OCCURRED. A POLICE REPORT WAS FILED. THE CONTACT BELIEVES THAT THE FAILURE WAS DUE TO A MANUFACTURER DEFECT AND THEY SHOULD BE HELD ACCOUNTABLE. THE SPEED WAS UNKNOWN. THE CURRENT AND FAILURE MILEAGES WERE 59,000.

NHTSA ID
10261351
Incident
Mar 8, 2009
Mileage
59,000 mi
Transmission
Filed Mar 7, 2009

MY VEHICLES TRANSMISSION HAD SLIPPED ONCE AND TOOK IT IN AS SOON AS IT HAPPENED TO A MERCURY DEALER FOR SERVICE AND THEY CHANGED FLUID AND FILTER NOW IT DON'T HAVE REVERSE OR FORWARD GEARS UNLESS I SHIFT IT MANUALLY THE DEALER SAID IF THEY CHANGE FLUID IT WILL GET WORSE AND IT DID SO THEY ARE AWARE OF THE PROBLEM WHY WASN'T A RECALL GIVEN FOR THIS VEHICLES TRANSMISSION PLUS THERE IS NO DIP STICK ON THE TRANSMISSION TO CHECK THE FLUID NOW I HAVE A VEHICLE THAT NEEDS A TRANSMISSION THAT HAS TO BE REPLACED AT A COST OF 3500 DOLLARS AND IS OUT OF WARRANTY I AM VERY DISAPPOINTED THAT A CAR COMPANY CAN GET AWAY WITH THIS. *TR

NHTSA ID
10261035
Incident
Mar 4, 2009
Mileage
71,000 mi
Transmission
Filed Dec 13, 2008

TRANSMISSION IS SLIPPING. I NOTICED WHEN PUTTING VEHICLE IN REVERSE IT JERKS REAL HARD INTO GEAR. ALSO COMING TO A STOP AND WHEN TAKING OFF FROM A STOP THE TRUCK WILL JERK. *TR

NHTSA ID
10251697
Incident
Oct 2, 2008
Mileage
85,000 mi
Interior & seatsTransmission
Filed Nov 10, 2008

TRANSMISSION SLIPPING AND RECENTLY WITHIN THIS MONTH NOTICED A CRACK IN THE LIFTGATE AND THE LIFTGATE WILL NOT RISE FULLY. *TR

NHTSA ID
10248300
Incident
May 1, 2008
Transmission
Filed May 11, 2008

TRANSMISSION DELAY AND THEN SLAMMING INTO GEAR, SOMETIMES CAUSING THE VEHICLE TO LUNGE FORWARD OR BACKWARD. *TR

NHTSA ID
10227245
Incident
Mar 24, 2008
Mileage
42,500 mi
Transmission
Filed Jan 11, 2008

WHEN BACKING UP WILL HESITATE AND THEN FLY BACKWARDS. FEEL OF DELAY IN TRANSMISSION WHEN HAVE COME TO A STOP AND GOING FROM ONE GEAR TO NEXT. IS INCREASING GETTING WORSE. *TR

NHTSA ID
10214559
Incident
Sep 10, 2007
Mileage
40,000 mi
Transmission
Filed Aug 15, 2007

TRANSMISSION - NO OVERDRIVE. *JB

NHTSA ID
10199667
Incident
Aug 15, 2005
Mileage
57,700 mi
Transmission
Filed Jun 16, 2006

BOTH PROBLEMS HAPPEN WHEN BACKING UP. 2004 MERCURY MOUNTAINEER,UPON PUTTING IT IN REVERSE, WILL HESITATE AND THEN FLY BACKWARDS. THE RECALL SOLENOID WAS PUT IN AND THE PROBLEM STOPPED FOR ABOUT A YEAR. IT HAS STARTED UP AGAIN, INFREQUENTLY. JUST 1 WEEK AGO, UPON BACKING OUT OF THE GARAGE, THERE WAS A METAL ON METAL SCREECHING NOISE AND A BURNING SMELL. THE WHEELS, WHEEL WELLS AND UNDERCARRIAGE WERE CHECKED FOR FOREIGN OBJECTS, AND NONE WERE FOUND. I LEFT THE TRUCK OUTSIDE THAT NIGHT, AND THE NEXT DAY THE NOISE HAPPENED AGAIN AND NOW HAPPENED ONCE IN THIRD GEAR. THE SAME BURNING SMELL HAPPENED AGAIN. I PARKED THE TRUCK AND DIDN'T USE IT ALL THAT DAY. WHEN I WENT TO TAKE IT TO THE DEALER THE NEXT DAY, THE NOISE WAS GONE. THE DEALER WOULDN'T EVEN LOOK AT IT AS "IT WASN'T DOING IT AT THAT TIME". *NM

NHTSA ID
10160056
Incident
Jun 11, 2006
Mileage
23,325 mi
Powertrain (other)Transmission
Filed Jun 15, 2006

I PURCHASED MY 2004 MERCURY MOUNTAINEER IN OCT 2003. THE VEHICLE WAS MAKING A ROARING NOISE, ONCE TAKEN IN FORD REPLACED THE REAR DIFFERENTIAL AND REAR DRIVE SHAFT, ALSO COMPLAINED OF ROUGH SHIFTING OF TRANSMISSION AROUND 30-35 MPH CHANGING FROM 2ND TO 3RD GEAR. THE SOLENOID WAS REPLACED, ADDITIVE ADDED, MANY REPROGRAMS BUT AFTER 6 TRIPS TO DEALER STILL IS NOT CORRECTED. 18 MONTHS LATER ROARING NOISE APPEARED AGAIN AND SAME REAR DRIVE SHAFT WAS REPLACED. THE VEHICLE HAS LESS THAN 30,000 MILES. *JB

NHTSA ID
10159971
Incident
Apr 20, 2004
Mileage
10,000 mi

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.

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Data sources

Data on this page last refreshed .