RoadVitals

2008 Mercury Mountaineer

Recalls, owner-reported complaints, investigations and safety data

Data refreshed

Owner complaintsComplaints 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.
96
Latest Sep 3, 2025
Safety recallsA safety recall is issued when a manufacturer or NHTSA determines that a vehicle has a safety-related defect or does not comply with a federal motor vehicle safety standard. Recall repairs are free. Whether a specific vehicle is covered depends on its VIN — a recall listed for a model year does not necessarily apply to every vehicle of that year.
2
Latest Dec 11, 2007
InvestigationsNHTSA opens an investigation to examine whether a safety defect may exist. An open investigation is not a determination that a defect exists, and many investigations close without a recall. Investigations can, however, lead to one.
1
Crash or fire reportedComplaints whose submitter recorded that a crash or a fire occurred. These are the reporter's own answers on the NHTSA form, not verified findings.
3

Overview

Our database contains 96 NHTSA owner-reported complaints for the 2008 Mercury Mountaineer, most frequently naming the interior & seats, electrical and engine categories. 2 safety recalls have been issued covering this model year; 1 NHTSA investigation names it; and 21 manufacturer communications are on file.

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

What owners report

Complaints grouped by the component NHTSA recorded

Percentages are of component mentions. A single complaint can name more than one component, so these do not sum to the total complaint count.

Safety recalls

2 campaigns cover this model year

Recalls apply to specific vehicles, not to every vehicle of a model year. Check your VIN with NHTSA or your manufacturer's dealer to confirm whether a recall affects your vehicle.

Check a VIN on NHTSA.gov

VISIBILITY:GLASS, SIDE/REAR

Dec 11, 2007
1,657 units potentially affected
The defect: CERTAIN CURVED TEMPERED REPLACEMENT GLASS MANUFACTURED BY HANGZHOU SAFETY GLASS LTD AND SUPPLIED TO SAFELITE BY AUTO TEMP INC., IDENTIFIED AS DOT-430, AND SOLD FOR USE ON CERTAIN DOMESTIC AND FOREIGN VEHICLES MAY NOT BREAK INTO SMALL PIECES AS EXPECTED OF TEMPERED GLASS AND FAILS TO CONFORM TO FEDERAL MOTOR VEHICLE SAFETY STANDARD NO. 205, "GLAZING MATERIALS."
The risk: IN THE EVENT OF A VEHICLE CRASH, THE OCCUPANT(S) MAY BE SERIOUSLY INJURED BY SHATTERED GLASS.
The remedy: SAFELITE WILL NOTIFY ITS RETAIL CUSTOMERS AND REPLACE THE GLASS FREE OF CHARGE. RETAIL CUSTOMERS CAN CONTACT SAFELITE TOLL FREE AT 1-888-843-2906. SAFELITE WILL NOTIFY ITS WHOLESALE CUSTOMERS AND REIMBURSE WHOLESALE CUSTOMERS FOR CURRENT INVENTORY AND AT A SPECIFIED RATE FOR REPLACING THEIR CUSTOMER'S GLASS. WHOLESALE CUSTOMERS CAN CONTACT SAFELITE'S WHOLESALE DIVISION, SERVICE AUTOGLASS TOLL FREE AT 1-888-246-6298. THE RECALL BEGAN ON JANUARY 15, 2008.
SAFELITE FULFILLMENT, INC.View on NHTSA.gov

POWER TRAIN:AUTOMATIC TRANSMISSION:COOLING UNIT AND LINES

Sep 26, 2007
1,497 units potentially affected
The defect: 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.
The risk: IF LEAKING TRANSMISSION FLUID CONTACTS THE CATALYTIC CONVERTER, IT MAY POSE A RISK OF FIRE.
The 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.
FORD MOTOR COMPANYManufacturer number 07S56View on NHTSA.gov

Safety investigations

NHTSA inquiries naming this vehicle. An investigation is not a finding of a defect.

PE08060ClosedPreliminary Evaluation

TIRE VALVE CRACKING

Opened Oct 14, 2008
Closed Apr 9, 2009

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

TIRES:VALVE

Recent owner complaints

Reports submitted to NHTSA, shown in the owner's own words

EngineFuel system
Filed Sep 3, 2025

The contact owns a 2008 Mercury Mountaineer. The contact stated that the check engine warning light was illuminated. The contact stated the vehicle stalled while driving at an undisclosed speed. The contact stated that several attempts were needed to restart the vehicle to continue driving. The contact stated that the gear shifter intermittently failed to move to the intended position. The contact stated that there was an abnormal fuel odor inside the cabin of the vehicle, and the fuel level was lowered sooner than normal. The vehicle was taken to the dealer to be diagnosed; however, the result was not provided. The contact stated that there was a code for an EVAP failure. The vehicle was not repaired. The vehicle was taken to another dealer, Peoria Ford (9130 W Bell Rd, Peoria, AZ 85382) however, the contact was not provided the cause for the failure. The vehicle was taken to an independent mechanic; however, the vehicle was not repaired. The manufacturer was not informed of the failure. The failure mileage was approximately 200,000.

NHTSA ID
11684759
Incident
Sep 3, 2023
Mileage
200,000 mi
Steering
Filed Oct 21, 2021

The contact owns a 2008 Mercury Mountaineer. The contact stated that after parking the vehicle, he was unable to remove the key from the ignition. The contact stated no warning light was illuminated. The contact stated he was able to remove the key after disconnecting the battery. The contact took the vehicle to an independent mechanic and was informed that the steering column lock module needed to be replaced. The vehicle was not diagnosed or repaired. A dealer was not contacted. The manufacturer had not been informed of the failure. The failure mileage was approximately 141,782.

NHTSA ID
11437666
Incident
Jan 1, 2021
Mileage
141,782 mi
EnginePowertrain (other)
Filed Oct 18, 2020

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 ID
11365014
Incident
Jan 1, 2011
Mileage
15,000 mi
Seat belts
Filed Aug 24, 2020

ON A 2008 MERCURY MOUNTAINEER THE DRIVER SIDE SEAT BELT WILL NOT STAY HOOKED IN IT COMES LOSE.

NHTSA ID
11351000
Incident
Jun 6, 2020
Seat belts
Filed Aug 10, 2020

DRIVERS SIDE SEAT BELT WITH NOT STAY LOCKED IN.

NHTSA ID
11348446
Incident
Aug 6, 2020
Mileage
85,625 mi
Seat belts
Filed Aug 10, 2020

SEAT BELT ON THE DRIVERS SIDE FAILS TO SAY HOOKED INTO THE SEAT BELT CLIP-IN

NHTSA ID
11344312
Incident
Aug 6, 2020
Electrical
Filed May 27, 2020

TL* THE CONTACT OWNS A 2008 MERCURY MOUNTAINEER. THE CONTACT STATED THAT THE INSTRUMENT PANEL LIGHTING SYSTEM WAS INOPERABLE. THE VEHICLE WAS TAKEN TO AN INDEPENDENT MECHANIC WHO DIAGNOSED THE VEHICLE HOWEVER, WAS UNABLE TO DETERMINE THE CAUSE OF THE FAILURE. THE INSTRUMENT PANEL LIGHTS WERE REPLACED HOWEVER, THE FAILURE RECURRED. THE VEHICLE THEN WAS TAKEN TO MARITIME FORD (1305 FRANKLIN ST, MANITOWOC, WI 54220) WHERE THE VEHICLE WAS DIAGNOSED AND IT WAS DETERMINED THAT THE DIMMER SWITCH NEEDED TO BE PLACED. THE MANUFACTURER WAS MADE AWARE OF THE FAILURE. THE FAILURE MILEAGE WAS APPROXIMATELY 120,000. *DT*JB

NHTSA ID
11326133
Incident
Oct 18, 2017
Mileage
120,000 mi
Driver assistanceElectricalEngine
Filed May 9, 2020

CAR WHEN IDLE SHUTS OFF IN MIDDLE OF TRAFFIC LOCKING BREAK AN STEERING WHEEL CAN CAUSE ACCIDENT HAPPENED TO ME IN MIDDLE OF TRAFFIC THANK GOD I WAS CLOSE TO EMERGENCY EXIT CAR SHUTOFF NOT ALLOWING TO BRAKE HAD TO PRESS EMERGENCY BRAKE. *TR

NHTSA ID
11323974
Incident
May 9, 2020
Mileage
140,074 mi

Manufacturer communications

A bulletin sent by a manufacturer to its dealers. Not a recall, and repairs are not necessarily free.

SSM 52476

EQUIPMENT

All accessory stick-on keyless entry keypads come with a wallet card containing the master code. If the accessory keypad was factory installed, this card will be placed in the glove box and should be handed to the vehicles owner during initial delivery. Unlike the integrated (wired) factory keypad, the accessory keypad master code cannot be retrieved from the vehicle using a diagnostic scan tool. If the wallet card for an accessory keypad is lost, follow these steps to recover the code. Dealer Key Code access is granted through the Dealer Program Enrollment System (DPES); dealership management can authorize users. The authorized user must go to FMCDealer.com > Parts and Service > Parts Product Line Information > Keys/Entry Devices > Aftermarket Keyless Entry Keypad Code Access. Follow the instructions on the screen to obtain the master code for the accessory keypad.

SSM 51909

POWER TRAIN:AUTOMATIC TRANSMISSION

When performing any transmission fluid changes or topoffs involving MERCON SP, MERCON LV has replaced all versions of MERCON SP and can be used going forward. Mixing MERCON LV and MERCON SP in the same transmission is acceptable. After 30-Jun-2023, MERCON SP ATF will no longer be manufactured and will only be available until inventory depletes.

TSB 19-2026

EQUIPMENT; STRUCTURE

Some 2000 and newer Ford, Lincoln and Mercury vehicles equipped with aluminum body panels may exhibit corrosion concerns appearing as bubbled and/or peeling paint with or without accompanying white dust. Panel replacement is recommended. Follow the Service Procedure steps to correct the condition

TSB 19-2026

STRUCTURE

Some 2000 and newer Ford, Lincoln and Mercury vehicles equipped with aluminum body panels may exhibit corrosion concerns appearing as bubbled and/or peeling paint with or without accompanying white dust. Panel replacement is recommended. Follow the Service Procedure steps to correct the condition

DOR-S3J9G-11

STEERING

This SKU is a front upper ball joint. The Customer communication requested return of unsold inventory to inspect for ball studs with excessive rotational friction in the ball joint assembly. Excessive friction in the ball joint assembly may cause a perceptible increase in steering effort.

SSM 47331

ENGINE; EQUIPMENT

Various vehicles equipped with a 4.6L, 5.4L, 6.8L modular 3 valve engine built on or before 8-Jan-2016 may exhibit symptoms that may include upper end engine noise, rough running, misfire and/or engine damage. If diagnosis leads to only camshaft/camshaft roller follower(s) requiring replacement, replace all of the camshaft roller followers on both banks/cylinder heads with part number 3L3Z-6564-A, not just the faulty roller follower(s). When replacing the camshaft roller followers, refer to Workshop Manual (WSM), Section 303-01.

Manufacturers file copies of the bulletins they send to dealers with NHTSA. These often describe diagnostic or repair procedures for a known condition. They are not recalls: repairs described in a bulletin are usually only free if the vehicle is still under warranty or the manufacturer has extended coverage.

Compare model years

Complaint and recall counts across every year of this model

Mercury Mountaineer by model year
YearComplaintsRecallsInvestigationsIssue Index
2011000
2010131135.8
2009600
2008Viewing962148.8
2007811140.8
20061172047.3
2005821142.8
20042101350.3
20031521249.1
20023724561.2
2001224261.0
20001238264.1
19991519463.3
19982366768.5
19973287465.4
1996320
1995000
1994000
1993000
1992000
1991000

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. Older model years have had longer for reports to accumulate.