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MERCURY MONTEGO (2004–2007) — Technical Guide, Fault Codes & Maintenance
Built 2004–2007 · all production years covered on this single page
3.0 i V6 24V AWD (203 Hp) • Petrol (Gasoline)
2007
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TroubleAtlas Score
An independent value score for the Mercury Montego (2004–2007) — reliability, safety, cost, parts, upkeep and documentation. Owing nothing to the manufacturer.
Scorecard · each voice 0–10
Reliabilityn/a
Safety & recallsn/a
Repair costn/a
Parts & repairability7.7
Maintenance & durabilityn/a
Documentation & supportn/a
Independent · Verified · Never for sale
Every figure on this Mercury Montego (2004–2007) page is aggregated and cross-checked against more than 6.6 million real workshop operations, NHTSA records and OEM technical sources — and updated continuously. No invented estimates.
The Mercury Montego (2004–2007) is powered by a 3.0 i V6 24V AWD (203 Hp) engine. Use the sections below for verified fluids, battery, OEM tyres, the maintenance schedule, recommended parts and the most commonly reported OBD2 fault codes for this vehicle.
Common problems
Common repairs
Fluids & lubricants
Battery
Fault codes (OBD2)
Dashboard lights
Parts comparator
Accessories & tools
Tyres
Recalls & TSB
Complaints
Workshops nearby
COMMON PROBLEMS
Transmission fault signal (TCM)MODERATE
The transmission module detected a fault — check separate transmission codes.
Related codes: P0700
Misfire / Loss of cylinderMODERATE
Rough running, idle vibration, power loss.
Related codes: P0300
Thermostat: coolant temperature lowLOW
Thermostat stuck open — engine does not reach operating temperature.
Related codes: P0128
Battery/system voltage lowLOW
System voltage below 10V — check alternator, battery or wiring.
Related codes: P0562
P0011LOW
Check with an OBD2 scanner.
Related codes: P0011
AVERAGE INDICATIVE COSTS
Prices may vary by area and workshop.
Full service
€ 120 – € 200
Full brake service
€ 180 – € 300
Spark plug replacement
€ 80 – € 140
Electronic diagnosis
€ 40 – € 70
WORKSHOP LABOUR RATES BY COUNTRY
Average independent-workshop hourly labour rates, to estimate repair costs in your country.
🇩🇪Germany€95/h
🇪🇸Spain€55/h
🇫🇷France€75/h
🇮🇹Italy€45/h
🇬🇧UK£80/h
🇺🇸USA$120/h
Reference rate
€45/h
Source: Eurostat 2024
💧 FLUIDS & LUBRICANTS
📋 RECALLS & TSB (3)
NHTSA 11V355000
Fuel System, Gasoline › Storage › Tank Assembly › Filler Pipe And Cap
Date: 13/07/2011
FORD IS RECALLING CERTAIN MODEL YEAR 2007 FORD FIVE HUNDRED AND MERCURY MONTEGO VEHICLES MANUFACTURED FROM SEPTEMBER 5, 2006, THROUGH SEPTEMBER 11, 2006. THE FUEL TANKS MAY NOT HAVE CONSISTENT WELDS BETWEEN THE FUEL TANK AND FUEL FILLER NECK SPUD WHICH CAN AFFECT THE STRENGTH OF…
NHTSA 05V515000
Fuel System, Gasoline › Storage › Tank Assembly › Mounting
Date: 09/11/2005
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).
NHTSA 06V383000
Latches/Locks/Linkages › Doors › Latch
Date: 05/10/2006
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…
COMMON OBD2 CODES TO CHECK
P0420
P0420
Powertrain
P0171
P0171
Powertrain
P0300
P0300
Powertrain
P0128
P0128
Powertrain
P0455
P0455
Powertrain
P0700
P0700
Transmission
P0442
P0442
Powertrain
P0172
P0172
Powertrain
P0401
P0401
Powertrain
All documented fault codes for this vehicle
The most documented diagnostic codes for this model, by system and severity. Tap a code for the full guide.
P0455
powertrain
LOW⏱ 0.62h avgP0442
powertrain
LOW⏱ 0.62h avgP0440
powertrain
LOW⏱ 0.78h avgP0420
powertrain
MEDIUM⏱ 1.24h avgP0300
powertrain
HIGH⏱ 1.22h avgP0172
powertrain
MEDIUM⏱ 1.13h avgP0171
powertrain
MEDIUM⏱ 0.95h avgP0730
transmission
MEDIUM⏱ 1.25h avgP0700
transmission
HIGH⏱ 1.25h avgP0401
powertrain
MEDIUM⏱ 1.25h avgP0011
powertrain
MEDIUM⏱ 5.4h avgU0100
network
HIGHP0562
electrical
MEDIUM⏱ 0.58h avgP0128
powertrain
MEDIUM⏱ 0.88h avg
DASHBOARD WARNING LIGHTS — UNIVERSAL GUIDE
53 warning lights classified by urgency. Appears on your vehicle? Check the urgency level.
Show all dashboard warning lights
🔴 IMMEDIATE STOP — pull over
Oil Pressure WarningEngine
Engine Temperature WarningCooling
Brake System WarningBrakes
Immobilizer / Key FaultSecurity
🟠 WARNING — check soon
Malfunction Indicator Light (MIL) / Check EngineEngine
Diesel Particulate Filter (DPF)Emissions
Battery / Charging SystemElectrical
Low Fuel WarningFuel
ABS WarningBrakes
Brake Pad Wear IndicatorBrakes
Electronic Parking Brake (EPB)Brakes
Power Steering WarningSteering
ESC / Stability Control FaultChassis
Tire Pressure Warning (TPMS)Chassis
Transmission Temperature WarningTransmission
Transmission / Gearbox FaultTransmission
Airbag / SRS WarningActive safety
EGR / Exhaust Gas Recirculation FaultEmissions
Catalytic Converter / Emissions FaultEmissions
AdBlue / DEF Level LowEmissions
Coolant Level LowCooling
Hybrid / EV System WarningHybrid
EV Charge System FaultHybrid
12V Battery (Hybrid/EV Auxiliary)Hybrid
Suspension Fault / Air SuspensionSuspension
CAN Bus / Network Communication FaultNetwork
Water in Fuel FilterFuel
Diesel Injector FaultFuel
Steering Angle Sensor FaultSteering
Turbo / Boost Pressure FaultEngine
Regenerative Braking Fault (Hybrid/EV)Hybrid
🟡 MONITOR
Fuel Cap / Evap SystemEmissions
4WD / AWD SystemDrivetrain
Bulb Failure WarningLighting
Headlight Range / Leveling FaultLighting
Service / Maintenance DueMaintenance
A/C System FaultHvac
Clutch Wear WarningTransmission
Cruise Control / ACC FaultADAS
🔵 INFORMATION
Engine Temperature Low (Blue)Cooling
Glow Plug / Diesel PreheatEngine
Traction Control / ESC OffChassis
Seatbelt ReminderActive safety
Rear Fog Light IndicatorLighting
Lane Departure / LDWS WarningADAS
Forward Collision Warning (FCW/AEB)ADAS
Blind Spot Monitor FaultADAS
Rear Parking Sensor / Camera FaultADAS
Windshield Washer Fluid LowMaintenance
Door Open WarningBody
Hood / Trunk Open WarningBody
Gear Shift Indicator (Manual)Transmission
Sport / Performance Mode ActiveTransmission
REPORTED COMPLAINTS & PROBLEMS (NHTSA)
159 owner complaints filed with the U.S. National Highway Traffic Safety Administration (NHTSA) for the Mercury Montego across model years 2004–2007. These are real, verified reports submitted by vehicle owners.
9 crash reports 2 fires 4 injuries
Complaints by model year (most reported first)
Model year 200560
Model year 200660
Model year 200736
Model year 20043
Most reported components (all years)
Power Train49
Vehicle Speed Control35
Engine30
Electrical System29
Structure11
Fuel/Propulsion System11
Sample reports
AFTER THE ENGINE WARMS UP, UPON ACCELERATION AND THE AUTOMATIC TRANSMISSION IS SHIFTING GEARS FROM 1 TO 2, 2 TO 3 AND 3 TO 4 THERE IS A STUTTERING AND OFTEN A JERKING WHEN THE AUTOMATIC TRANSMISSION IS SHIFTING. THIS JERKING ALSO OCCURS… (MY 2006)
STARTED 2005 MONTEGO TO PICK UP FIANC FROM WORK, GOT BACK INSIDE AFTER BRUSHING SNOW OFF THE CAR AND I PRESSED THE THROTTLE TO DROP THE IDLE SPEED, ALL OF THE GAUGES ON MY INSTRUMENT PANEL WENT BLACK (TACH,SPEED,FUEL,WATER TEMP,AC/HEATER… (MY 2005)
TL* THE CONTACT OWNS A 2005 MERCURY MONTEGO. WHEN THE CONTACT ATTEMPTED TO CLOSE THE DRIVER'S DOOR, THE LATCHING MECHANISM DID NOT ENGAGE. THE VEHICLE WAS NOT TAKEN TO AN INDEPENDENT MECHANIC OR DEALER FOR DIAGNOSTIC TESTING. THE MANUFAC… (MY 2005)
IN FREEZING WEATHER, DOOR LATCHES WILL NOT LATCH AND THE DOOR REMAINS OPEN. THIS ONLY HAPPENS WHEN THE CAR IS LEFT OUTSIDE AND IS NOT "FIXED" UNTIL THE DOOR MECHANISMS WARM UP FROM BEING IN THE SUN. DUE TO THIS ISSUE WE ARE UNABLE TO DRI… (MY 2005)
Source: NHTSA complaints database (U.S. data.gov). Figures cover production years 2004–2007.
Frequently Asked Questions
Does the Mercury Montego have any safety recalls?
Yes — 3 official NHTSA recall campaign(s) affect this model, mainly: FUEL SYSTEM, GASOLINE:STORAGE:TANK ASSEMBLY:MOUNTING, LATCHES/LOCKS/LINKAGES:DOORS:LATCH. Check the recalls section for your exact year/VIN.
What does fault code P0300 mean on the Mercury Montego?
Random/Multiple Cylinder Misfire Detected This code is among the most documented for this model — tap it in the OBD2 section for the full step-by-step guide.
What does fault code P0128 mean on the Mercury Montego?
Coolant temperature below thermostat regulating temperature — thermostat stuck open or faulty This code is among the most documented for this model — tap it in the OBD2 section for the full step-by-step guide.
What does fault code P0011 mean on the Mercury Montego?
A Camshaft Position Timing Over-Advanced or System Performance (Bank 1) This code is among the most documented for this model — tap it in the OBD2 section for the full step-by-step guide.
Are engine problems common on the Mercury Montego?
Yes — 45 of 158 real owner reports filed with NHTSA mention the engine. One owner reported: “THE LINKAGE THAT CONTROLS THE GEAR SHIFT ALLOWED THE CAR TO ROLL WHILE THE CAR WAS SUPPOSED TO HAVE BEEN IN PARK. MOREOVER. THE CAR WAS IN PARK BUT WOULDN'T START. WHEN THE TOW TRUCK PUT THE CAR ON TH…” See the owner-reported complaints section below for more.
Are electrical problems common on the Mercury Montego?
Yes — 47 of 158 real owner reports filed with NHTSA mention the electrical. One owner reported: “THE LINKAGE THAT CONTROLS THE GEAR SHIFT ALLOWED THE CAR TO ROLL WHILE THE CAR WAS SUPPOSED TO HAVE BEEN IN PARK. MOREOVER. THE CAR WAS IN PARK BUT WOULDN'T START. WHEN THE TOW TRUCK PUT THE CAR ON TH…” See the owner-reported complaints section below for more.
Are transmission problems common on the Mercury Montego?
Yes — 55 of 158 real owner reports filed with NHTSA mention the transmission. One owner reported: “2004 MERCURY MOUNTAINEER I'VE EXPERIENCED MULTIPLE TRANSMISSION PROBLEMS; A HARD JERKING WHEN YOU PLACE IT IN REVERSE,AND ROUGH SHIFTING WHILE ON THE HIGHWAY. DEALERSHIP MADE MULTIPLE ATTEMPTS TO RE…” See the owner-reported complaints section below for more.
Which OBD2 fault codes are commonly documented for the Mercury Montego (2004–2007)?
Commonly documented OBD2 codes across many vehicles include: P0420, P0300, P0171. Find the full description, likely causes and estimated repair costs in the OBD2 Codes section on this page.
How often should the Mercury Montego (2004–2007) be serviced?
Routine maintenance for the Mercury Montego (2004–2007) typically includes an oil change every 6,000–9,000 miles (10,000–15,000 km), an air filter every 12,000–18,000 miles (20,000–30,000 km) and a brake inspection every 12,000 miles (20,000 km). Check the full plan with specific intervals in the Scheduled Maintenance section on this page.
Found what you were looking for? Explore other Mercury models in our database, compare tyre offers in your size, or search a specific fault code in the TroubleAtlas OBD2 database.