TL* THE CONTACT OWNS A 2005 MERCURY MONTEGO. THE CONTACT STATED THAT WHILE DRIVING AT VARIOUS SPEEDS, THE INSTRUMENT PANEL LIGHTS FAILED TO ILLUMINATE AND ALL THE GAUGES MALFUNCTIONED. THE VEHICLE HAD NOT BEEN DIAGNOSED OR REPAIRED. THE MANUFACTURER WAS NOT MADE AWARE OF THE FAILURE. THE APPROXIMATE FAILURE MILEAGE WAS 135,000.
2005 Mercury Montego
Owner reports · Recalls · Investigations
Limited comparison data
There is not enough comparable history to draw a useful model-year comparison.
About this comparison →How this year compares
Owner complaints by model year
Compare all Montego years →Counts vary with age, sales and reporting. They are not failure rates.
What owners reported most
All reported categories
Tap a category to read its complaints. One report may name several components.
When problems were reported
Mileage at the reported incident
123 reports with mileage · 12 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.
- Power Train. Review the 49 owner reports in this category and discuss these concerns during a pre-purchase inspection. Read reports →
- Electrical System. Review the 27 owner reports in this category and discuss these concerns during a pre-purchase inspection. Read reports →
- Vehicle Speed Control. Review the 24 owner reports in this category and discuss these concerns during a pre-purchase inspection. Read reports →
NHTSA owner reports · September 18, 2026 snapshot.
Electrical System complaints
27 reportsVEHICLE WAS STARTED FIRST THING IN MORNING AND DRIVEN APPROXIMATELY 25' WHEN THE TRANSMISSION SEEMED TO DISENGAGE AND WARNING LIGHTS CAME ON. CAR REMAINED PARKED FOR ABOUT 30 MINUTES AND A SECOND ATTEMPT WAS MADE. THE CAR WAS DRIVEN APPROXIMATELY 2 MILES WHEN ONCE AGAIN THE TRANSMISSION FAILED TO ENGAGE AND A LOSS OF POWER WAS E…
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VEHICLE WAS STARTED FIRST THING IN MORNING AND DRIVEN APPROXIMATELY 25' WHEN THE TRANSMISSION SEEMED TO DISENGAGE AND WARNING LIGHTS CAME ON. CAR REMAINED PARKED FOR ABOUT 30 MINUTES AND A SECOND ATTEMPT WAS MADE. THE CAR WAS DRIVEN APPROXIMATELY 2 MILES WHEN ONCE AGAIN THE TRANSMISSION FAILED TO ENGAGE AND A LOSS OF POWER WAS EXPERIENCED. FOLLOWING THESE TWO INCIDENTS WITH THE VEHICLE I ARRANGED TO HAVE THE VEHICLE FLAT BEDDED TO THE LOCAL FORD DEALERSHIP WHERE IT WAS DETERMINED THAT THE PROBLEM WAS A DEFECTIVE THROTTLE BODY ASSEMBLY THE VEHICLE HAS 68,250 ORIGINAL MILES ON ODOMETER. *TR
INSTRUMENT PANEL LIGHTS ALL LIGHT UP AND ALL THE DIALS DROP TO ZERO, TRACTION CONTROL GOES OUT WHICH CAUSES A HUGE SAFETY ISSUE IN WINTER DRIVING. SPEEDOMETER, TACK, FUEL GAUGE, AND ENGINE TEMP ALL SET TO ZERO. AUTOMATIC DOOR LOCKS INOP, LIGHTS ON INTERIOR GEAR SHIFT GO OUT. AT FIRST THIS WOULD HAPPEN INTERMITTENTLY - APPROXI…
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INSTRUMENT PANEL LIGHTS ALL LIGHT UP AND ALL THE DIALS DROP TO ZERO, TRACTION CONTROL GOES OUT WHICH CAUSES A HUGE SAFETY ISSUE IN WINTER DRIVING. SPEEDOMETER, TACK, FUEL GAUGE, AND ENGINE TEMP ALL SET TO ZERO. AUTOMATIC DOOR LOCKS INOP, LIGHTS ON INTERIOR GEAR SHIFT GO OUT. AT FIRST THIS WOULD HAPPEN INTERMITTENTLY - APPROXIMATELY 2 TO 3 TIMES A MONTH FOR A FEW SECONDS AND THEN PROGRESSIVELY GOT WORSE WITH TIME TO TOTAL FAILURE. EVERY TIME I TRIED TO BRING IT INTO THE DEALER I WAS TOLD THEY COULDN'T FIGURE OUT WHAT WAS HAPPENING BECAUSE THE VEHICLE WOULD "ACT FINE" FOR THEM. AFTER SEVERAL TRIPS TO THE DEALERSHIP AND A LOT OF RESEARCH ON THE ISSUE I FIND OUT FORD KNOWS ITS A PROBLEM AND ISSUED A TSB 06-17-9 ON IT BUT IS FAILING TO STAND BEHIND THEIR PRODUCT AND ISSUE A RECALL. WHAT IS IT GOING TO TAKE A FEW DEATHS? I WOULD NEVER BUY ANOTHER FORD PRODUCT DUE TO THEIR LACK OF CUSTOMER SERVICE AND CONCERNS WITH THE SAFETY OF THEIR PRODUCT. *TR
MERCURY MONTEGO 2005 INSTRUMENT PANEL HAS BEEN GOING ON AND OFF FOR TWO YEARS. GETTING LONGER DURATION BEFORE PANEL COMES BACK ON. THE INTERIOR IS PITCH BLACK, I DON'T KNOW HOW FAST I AM GOING, HOW MUCH GAS I HAVE. MY BACK UP LIGHTS REMAIN ON WHEN PANEL GOES . DRIVERS BEHIND ME STAY CLEAR, THINKING I AM BACKING UP. I HAVE NO AI…
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MERCURY MONTEGO 2005 INSTRUMENT PANEL HAS BEEN GOING ON AND OFF FOR TWO YEARS. GETTING LONGER DURATION BEFORE PANEL COMES BACK ON. THE INTERIOR IS PITCH BLACK, I DON'T KNOW HOW FAST I AM GOING, HOW MUCH GAS I HAVE. MY BACK UP LIGHTS REMAIN ON WHEN PANEL GOES . DRIVERS BEHIND ME STAY CLEAR, THINKING I AM BACKING UP. I HAVE NO AIR CONDITIONER. I HAVE RADIO , HEAD LIGHTS , BRAKE LIGHTS . I DID NOT TRY THE CRUISE CONTROL BECAUSE I AM SCARED TO DEATH. .IT IS OVER A 600.00 REPAIR..I GOOGLED AND OTHERS HAVE THE SAME PROBLEM. IT IS D A N G ER OUS. *TR
THE CAR WAS PURCHASED IN MAY OF 2011. AUGUST 2011, THE TRANSMISSION STARTED TO VIOLENTLY JERK AND ACT AS IF IT WERE IN NEUTRAL. WHEN GRADUALLY APPLYING THE BREAKS, THE CAR WOULD BEGIN TO SHUDDER. THIS WOULD HAPPEN ONLY IF THE ENGINE WAS WARM. BY MARCH 2012, THE SHUDDERING TRANSMISSION AND JERK WAS CONSTANT. I TOOK IT IN TO B…
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THE CAR WAS PURCHASED IN MAY OF 2011. AUGUST 2011, THE TRANSMISSION STARTED TO VIOLENTLY JERK AND ACT AS IF IT WERE IN NEUTRAL. WHEN GRADUALLY APPLYING THE BREAKS, THE CAR WOULD BEGIN TO SHUDDER. THIS WOULD HAPPEN ONLY IF THE ENGINE WAS WARM. BY MARCH 2012, THE SHUDDERING TRANSMISSION AND JERK WAS CONSTANT. I TOOK IT IN TO BE LOOKED AT IN APRIL OF 2012. THE ALTERNATOR WAS REPLACED, DUE TO WHAT WE THOUGHT WAS A BAD BATTERY. THE MECHANIC BELIEVED THIS CAUSED THE TRANSMISSION TO JERK. THE PROBLEM WAS NOT SOLVED. JUNE 2012 THE TRANSMISSION WAS REPLACED BY A FORD DEALERSHIP FOR 5,000. JULY 2012 THE CAR WENT INTO FAIL ENGINE SAFE MODE, THE CODES POINTING TO THE THROTTLE BODY. A MECHANIC CLEANED THE THROTTLE BODY SAYING IT MIGHT SOLVE THE PROBLEM. 2 DAYS LATER THE CAR WENT INTO FAIL ENGINE SAFE MODE AGAIN WITH THE SAME CODES WITH AN ESTIMATE OF $900. THE CAR HAS 72000K ON IT AND HAS HAD THREE MAJOR PROBLEMS IN THE PAST COUPLE OF MONTHS. *TR
THE INSTRUMENT GAUGE ON MY 2005 MERCURY MONTEGO JUST WENT "DEAD". NOTHING REGISTERED, SO THERE WAS NO READING ON MY SPEED, ENGINE HEAT GAUGE, FUEL LEVEL, OR TACHOMETER. THIS HAPPENED ONCE IN EARLY SPRING OF THIS YEAR (2012), BUT DID NOT REPEAT UNTIL RECENTLY. IT IS NOW JUNE AND THE SAME THING HAS RE-OCCURRED ABOUT 10 TIMES IN…
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THE INSTRUMENT GAUGE ON MY 2005 MERCURY MONTEGO JUST WENT "DEAD". NOTHING REGISTERED, SO THERE WAS NO READING ON MY SPEED, ENGINE HEAT GAUGE, FUEL LEVEL, OR TACHOMETER. THIS HAPPENED ONCE IN EARLY SPRING OF THIS YEAR (2012), BUT DID NOT REPEAT UNTIL RECENTLY. IT IS NOW JUNE AND THE SAME THING HAS RE-OCCURRED ABOUT 10 TIMES IN THE PAST TWO WEEKS. AFTER TURNING THE CAR OFF AND RESTARTING, THIS SOMETIMES (BUT NOT ALWAYS), "FIXES" THE PROBLEM. MOST RECENTLY, IF THE GAUGES DO WORK, THE "CHECK ENGINE" LIGHT TURNS ON. THE AIRBAG LIGHT STAYS ON, AND THE AWD MALFUNCTION MESSAGE DISPLAYS IN THE INFORMATION PANEL UNTIL I HIT THE RESET BUTTON. FROM A SAFETY PERSPECTIVE, IS THIS A SHORT IN THE SYSTEM OR IS MY AIRBAG REALLY MALFUNCTIONING? AND HOW DO I KNOW MY SPEED OTHER THAN TO GUESS? *JS
TL* THE CONTACT OWNS A 2005 MERCURY MONTEGO. THE CONTACT NOTICED THAT ALL OF THE INSTRUMENT PANEL GAUGE READINGS DECREASED TO ZERO AND THE CHECK ENGINE LIGHT ILLUMINATED. THE CONTACT HEARD A CLANKING SOUND BEFORE THE FAILURE OCCURRED. THE VEHICLE WAS SHUT OFF AND RESTARTED AND THE GAUGES RESET TO THE ACCURATE READINGS. THE VEHIC…
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TL* THE CONTACT OWNS A 2005 MERCURY MONTEGO. THE CONTACT NOTICED THAT ALL OF THE INSTRUMENT PANEL GAUGE READINGS DECREASED TO ZERO AND THE CHECK ENGINE LIGHT ILLUMINATED. THE CONTACT HEARD A CLANKING SOUND BEFORE THE FAILURE OCCURRED. THE VEHICLE WAS SHUT OFF AND RESTARTED AND THE GAUGES RESET TO THE ACCURATE READINGS. THE VEHICLE WAS TAKEN TO THE DEALER FOR DIAGNOSTIC TESTING. THE TECHNICIANS WERE UNABLE TO DUPLICATE THE FAILURE. THE VEHICLE WAS NOT REPAIRED. THE APPROXIMATE FAILURE MILEAGE WAS 45,000.
TL* THE CONTACT OWNS A 2005 MERCURY MONTEGO. THE CONTACT STATED THAT WHILE DRIVING 30 MPH, THE ENTIRE ELECTRICAL SYSTEM MALFUNCTIONED AND CAUSED THE REAR BRAKES AND INSTRUMENT CLUSTER TO FAIL. THE VEHICLE WAS TAKEN TO AN AUTHORIZED DEALER, WHERE A DIAGNOSTIC TEST INDICATED THAT THE THROTTLE BODY AND ALTERNATOR WERE FAULTY. THE D…
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TL* THE CONTACT OWNS A 2005 MERCURY MONTEGO. THE CONTACT STATED THAT WHILE DRIVING 30 MPH, THE ENTIRE ELECTRICAL SYSTEM MALFUNCTIONED AND CAUSED THE REAR BRAKES AND INSTRUMENT CLUSTER TO FAIL. THE VEHICLE WAS TAKEN TO AN AUTHORIZED DEALER, WHERE A DIAGNOSTIC TEST INDICATED THAT THE THROTTLE BODY AND ALTERNATOR WERE FAULTY. THE DEALER REPLACED THE THROTTLE BODY, BUT NOT THE ALTERNATOR. THE FAILURE CONTINUED. THE VEHICLE WAS TAKEN BACK TO THE AUTHORIZED DEALER, WHERE THEY WERE UNABLE TO DIAGNOSE THE FAILURE. THE FAILURE MILEAGE WAS 95,275.
ENGINE REVS UP, AND CAR LURCHES, TYPICALLY WHEN: - SHIFTING INTO DRIVE OR REVERSE AND/OR MOVING AWAY FROM IDLE; - ALMOST ALWAYS WHEN THE WHEELS ARE CRANKED ALL THE WAY TO THE LEFT OR RIGHT AND THE CAR IS MOVING AWAY FROM IDLE. THE LURCHING IS SUDDEN AND "VIOLENT" ENOUGH THAT IT CAN CATCH A DRIVER UNPREPARED - MY WIFE AND I A…
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ENGINE REVS UP, AND CAR LURCHES, TYPICALLY WHEN: - SHIFTING INTO DRIVE OR REVERSE AND/OR MOVING AWAY FROM IDLE; - ALMOST ALWAYS WHEN THE WHEELS ARE CRANKED ALL THE WAY TO THE LEFT OR RIGHT AND THE CAR IS MOVING AWAY FROM IDLE. THE LURCHING IS SUDDEN AND "VIOLENT" ENOUGH THAT IT CAN CATCH A DRIVER UNPREPARED - MY WIFE AND I ARE USED TO IT AND ABLE TO COMPENSATE, BUT WE AREN'T LETTING OUR 17 YEAR-OLD DRIVE THE CAR FOR NOW UNLESS ONE OF US IS WITH HER. ONGOING PROBLEM SINCE CAR WAS PURCHASED NEW. THIS HAS BEEN AN OCCASIONAL PROBLEM FOR YEARS - COMPLAINT WAS EVEN MADE WHILE CAR WAS STILL UNDER ITS 3 YEAR/36,000 MILE WARRANTY (NOTHING FOUND). PROBLEM HAS BEEN GETTING MORE FREQUENT OVER THE PAST YEAR OR SO.
1) NO PRIOR EVENTS LEAD TO THIS PROBLEM IT JUST HAPPENED. 2)THE INSTRUMENT PANEL OF MY 2005 MERCURY MONTEGO LOST ALL GAUGES, SPEEDOMETER, LIGHTS,TURN-SIGNALS. THEN THE CAR COMPLETELY LOST POWER. 3) THE REPAIR SHOP IS STILL TRYING TO DETERMINE THE PROBLEM. *TR
Official recalls
206V383000 · Latches/locks/linkages:doors:latch
Oct 5, 2006
ON CERTAIN PASSENGER VEHICLES CURRENTLY REGISTERED IN THE FOLLOWING STATES: ALASKA, COLORADO, CONNECTICUT, DELAWARE, IDAHO, ILLINOIS, INDIANA, IOWA, KANSAS, KENTUCKY, MAINE, MARYLAND, MASSACHUSETTS, MICHIGAN, MINNESOTA, MISSOURI, MONTANA, NEBRASKA, NEW HAMPSHIRE, NEW JERSEY, NEW YORK, NORTH DAKOTA, OHIO, PENNSYLVANIA, RHODE ISLAND, SOUTH DAKOTA, UTAH, VERMONT, WEST VIRGINIA, WISCONSIN, AND WYOMING. THE SIDE DOOR LATCH MECHANISMS MAY EXPERIENCE WATER INTRUSION ALLOWING THE LATCH MECHANISM TO FREEZE IN COLD WEATHER.
Consequence & remedy
Consequence: AS A RESULT, THE DOOR LATCH PAWL MAY NOT RETURN TO THE LATCH POSITION WHEN THE DOOR IS CLOSED, AND THE DOOR COULD OPEN WHILE THE VEHICLE IS MOVING.
Remedy: DEALERS WILL INSTALL A SHIELD OVER THE FRONT LATCHES; SEAL A DRAIN HOLE IN THE REAR WINDOW TRIM MOLDING ON THE FREESTYLE REAR SIDE DOORS; AND APPLY GREASE TO ALL FRONT AND REAR SIDE-DOOR LATCH MECHANISMS FREE OF CHARGE. THE RECALL BEGAN ON NOVEMBER 8, 2006. OWNERS MAY CONTACT FORD AT 1-800-392-3673.
05V515000 · Fuel System, Gasoline:storage:tank Assembly:mounting
Nov 9, 2005
ON CERTAIN PASSENGER VEHICLES, THE STRAPS THAT SECURE THE FUEL TANK TO THE VEHICLE BODY MAY BREAK, CAUSING THE FUEL TANK AND FUEL TANK HEAT SHIELD TO DROP ON THE DRIVESHAFT (ALL WHEEL DRIVE VEHICLES) OR EXHAUST SYSTEM (FRONT WHEEL DRIVE VEHICLES).
Consequence & remedy
Consequence: IF THIS HAPPENS, DRIVERS MAY NOTICE A NOISE OR A FUEL LEAK. A FUEL LEAK IN THE PRESENCE OF AN IGNITION SOURCE COULD RESULT IN A FIRE.
Remedy: DEALERS WILL REPLACE BOTH FUEL TANK STRAPS. THE RECALL BEGAN ON DECEMBER 1, 2005. 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
1PE11018 · Idle Instability
Opened May 11, 2011 · Closed Feb 7, 2013
Status: closed (inferred from source dates) · Vehicle Speed Control
On November 29, 2012, Ford Motor Company (Ford) initiated Customer Satisfaction Program 12N03 to extend warranty coverage terms for repair of engine idle RPM surge caused by throttle body deposits in all model year (MY) 2005 through 2007 Ford Freestyle, Five Hundred and Mercury Montego vehicles.The program extends the coverage for up to 10 years of service or 150,000 miles from the warranty start date of the vehicle (all vehicles are eligible for the program through May 31, 2013, regardless of mileage).Dealers will repair vehicles exhibiting the condition by removing and cleaning the throttle body and reprogramming the PCM with software containing an updated idle speed control strategy.According to Ford, some of the affected vehicles may experience momentary, intermittent engine idle RPM surge (idle flare) when stopped or during low speed driving maneuvers such as in a parking lot or driveway.Unstable idle speed control (dips and flares) around the target engine speed (700 rpm) can occur in vehicles with deposit build-up in the throttle body when the system adjusts engine speed in response to changes in engine load, typically from power steering application or air-conditioner compressor cycling.Idle speed control logic is only active at vehicle speeds below 3.5 mph and when the accelerator pedal is not applied.Ford testing of a vehicle with a worst case throttle body measured a maximum idle flare of 1360 RPM lasting approximately 1 second, which Ford indicated was consistent with system design to limit vehicle speed and acceleration in idle control mode.Ford indicated that the test vehicle was held in place with normal brake effort and that vehicle speed remained under 4 mph without the brake pedal applied.In addition to throttle body deposit accumulation, symptoms associated with the condition may include Check Engine lamp illumination and diagnostic trouble codes (DTCs) P0505, P0506 or P061B.Ford attributed the surge condition to changes in idle air flow resulting from the progressive buildup of deposits in the throttle body from normal Positive Crankcase Ventilation (PCV) system operation.This condition was not adequately compensated for in the original Powertrain Control Module (PCM) calibration.Ford issued a technical service bulletin on August 15, 2011 (TSB 11-8-5), releasing an updated powertrain control calibration for vehicles with CVT transmissions.On October 19, 2011, Ford issued a second bulletin (TSB 11-10-21) superseding TSB 11-8-5 and including updated powertrain control calibration for vehicles with 6-speed transmissions.Prior to Ford issuing the TSB?s, owner?s experiencing the alleged defect either received no repairs, if dealers could not duplicate the condition, or had the throttle body cleaned or replaced, which only provided temporary correction until the throttle deposit build-up returned.Ford?s revised powertrain calibrations appear to be effective remedies for the idle instability caused by build-up of throttle body deposits.However, even after the TSB?s were released, many owners experiencing the condition continued to have difficulty with proper diagnosis and repair as dealers were often either unable to duplicate the condition or were unfamiliar with the new repair procedures.Ford's new program addresses those concerns.NHTSA's testing and complaint analysis indicate that the idle speed control issue in the subject vehicles can only occur at very low speeds, are very brief events, are easily controlled by moderate brake pedal forces and result in minor increases in vehicle speed even with no braking.This investigation is closed.The closing of this in
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