TroubleAtlas Score
MERCURY MARINER (2005–2011): Full Technical Specs & OBD2 Diagnostics
Built 2005–2011 · all production years covered on this single page
2.3L I4 • Gasoline
2011
© Wikimedia Commons CC BY-SA
TroubleAtlas Score
An independent value score for the Mercury Mariner (2005–2011) — 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 & repairability7.8
Maintenance & durabilityn/a
Documentation & supportn/a
Independent · Verified · Never for sale
Every figure on this Mercury Mariner (2005–2011) 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 Mariner (2005–2011) is powered by a 2.3L I4 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 (22)
NHTSA 15V606000
Power Train › Automatic Transmission › Lever And Linkage › Floor Shift
Date: 29/09/2015
Ford Motor Company (Ford) is recalling certain model year 2001-2008 Ford Escape and Mercury Mariner vehicles manufactured March 31, 2001, to September 1, 2009. The affected vehicles are equipped with either a 2.3L or 3.0L engine and have had their CD4E transmission replaced with…
NHTSA 15V606000
Power Train › Automatic Transmission › Lever And Linkage › Floor Shift
Date: 29/09/2015
Ford Motor Company (Ford) is recalling certain model year 2001-2008 Ford Escape and Mercury Mariner vehicles manufactured March 31, 2001, to September 1, 2009. The affected vehicles are equipped with either a 2.3L or 3.0L engine and have had their CD4E transmission replaced with…
NHTSA 15V606000
Power Train › Automatic Transmission › Lever And Linkage › Floor Shift
Date: 29/09/2015
Ford Motor Company (Ford) is recalling certain model year 2001-2008 Ford Escape and Mercury Mariner vehicles manufactured March 31, 2001, to September 1, 2009. The affected vehicles are equipped with either a 2.3L or 3.0L engine and have had their CD4E transmission replaced with…
NHTSA 15V606000
Power Train › Automatic Transmission › Lever And Linkage › Floor Shift
Date: 29/09/2015
Ford Motor Company (Ford) is recalling certain model year 2001-2008 Ford Escape and Mercury Mariner vehicles manufactured March 31, 2001, to September 1, 2009. The affected vehicles are equipped with either a 2.3L or 3.0L engine and have had their CD4E transmission replaced with…
NHTSA 14V284000
Steering › Electric Power Assist System
Date: 29/05/2014
Ford Motor Company (Ford) is recalling certain model year 2008-2011 Ford Escape and Mercury Mariner vehicles manufactured August 18, 2006, through September 11, 2010. The affected vehicles have a steering torque sensor that may not be able to properly detect driver steering inpu…
NHTSA 14V284000
Steering › Electric Power Assist System
Date: 29/05/2014
Ford Motor Company (Ford) is recalling certain model year 2008-2011 Ford Escape and Mercury Mariner vehicles manufactured August 18, 2006, through September 11, 2010. The affected vehicles have a steering torque sensor that may not be able to properly detect driver steering inpu…
NHTSA 14V284000
Steering › Electric Power Assist System
Date: 29/05/2014
Ford Motor Company (Ford) is recalling certain model year 2008-2011 Ford Escape and Mercury Mariner vehicles manufactured August 18, 2006, through September 11, 2010. The affected vehicles have a steering torque sensor that may not be able to properly detect driver steering inpu…
NHTSA 14V284000
Steering › Electric Power Assist System
Date: 29/05/2014
Ford Motor Company (Ford) is recalling certain model year 2008-2011 Ford Escape and Mercury Mariner vehicles manufactured August 18, 2006, through September 11, 2010. The affected vehicles have a steering torque sensor that may not be able to properly detect driver steering inpu…
NHTSA 16V777000
Fuel System, Gasoline › Delivery › Fuel Pump
Date: 26/10/2016
Ford Motor Company (Ford) is recalling certain model year 2010-2012 Ford Escape vehicles manufactured February 26, 2009, to April 29, 2012, and 2010-2011 Mercury Mariner vehicles manufactured February 25, 2009, to December 12, 2010. On vehicles with a 3.0L engine, the Fuel Deliv…
NHTSA 16V777000
Fuel System, Gasoline › Delivery › Fuel Pump
Date: 26/10/2016
Ford Motor Company (Ford) is recalling certain model year 2010-2012 Ford Escape vehicles manufactured February 26, 2009, to April 29, 2012, and 2010-2011 Mercury Mariner vehicles manufactured February 25, 2009, to December 12, 2010. On vehicles with a 3.0L engine, the Fuel Deliv…
NHTSA 05V520000
Visibility › Windshield Wiper/Washer › Motor
Date: 09/11/2005
ON CERTAIN TRUCKS, PASSENGER CARS AND SPORT UTILITY VEHICLES, THE WINDSHIELD WIPER MOTOR MAY HAVE BEEN PRODUCED WITHOUT GREASE BEING APPLIED TO THE OUTPUT SHAFT GEAR.
NHTSA 06V111000
Seats › Front Assembly › Head Restraint
Date: 07/04/2006
CERTAIN SPORT UTILITY VEHICLES EQUIPPED WITHOUT SIDE AIR CURTAINS OR MOONROOFS FAIL TO COMPLY WITH THE REQUIREMENTS OF FEDERAL MOTOR VEHICLE SAFETY STANDARD NO. 201, "OCCUPANT PROTECTION IN INTERIOR IMPACT." DURING TESTING, THE FREE MOTION HEAD FORM REGISTERED A MEASUREMENT ABOVE…
NHTSA 14V526000
Hybrid Propulsion System
Date: 03/09/2014
Ford Motor Company (Ford) is recalling certain model year 2005-2008 Ford Escape hybrid electric vehicles manufactured October 13, 2003, to June 20, 2008, and 2006-2008 Mercury Mariner hybrid electric vehicles manufactured June 10, 2005, to June 20, 2008. The coolant pump for the …
NHTSA 14V526000
Hybrid Propulsion System
Date: 03/09/2014
Ford Motor Company (Ford) is recalling certain model year 2005-2008 Ford Escape hybrid electric vehicles manufactured October 13, 2003, to June 20, 2008, and 2006-2008 Mercury Mariner hybrid electric vehicles manufactured June 10, 2005, to June 20, 2008. The coolant pump for the …
NHTSA 14V526000
Hybrid Propulsion System
Date: 03/09/2014
Ford Motor Company (Ford) is recalling certain model year 2005-2008 Ford Escape hybrid electric vehicles manufactured October 13, 2003, to June 20, 2008, and 2006-2008 Mercury Mariner hybrid electric vehicles manufactured June 10, 2005, to June 20, 2008. The coolant pump for the …
NHTSA 15E045000
Suspension › Front › Wheel Bearing
Date: 03/06/2015
The Timken Company (Timken) is recalling certain aftermarket front wheel bearings, part number 510072, sold from January 22, 2015, to May 21, 2015, to be used as service parts on 2001-2012 Ford Escape, 2001-2011 Mazda Tribute, and 2005-2011 Mercury Mariner vehicles. The affected…
NHTSA 15E045000
Suspension › Front › Wheel Bearing
Date: 03/06/2015
The Timken Company (Timken) is recalling certain aftermarket front wheel bearings, part number 510072, sold from January 22, 2015, to May 21, 2015, to be used as service parts on 2001-2012 Ford Escape, 2001-2011 Mazda Tribute, and 2005-2011 Mercury Mariner vehicles. The affected…
NHTSA 15E045000
Suspension › Front › Wheel Bearing
Date: 03/06/2015
The Timken Company (Timken) is recalling certain aftermarket front wheel bearings, part number 510072, sold from January 22, 2015, to May 21, 2015, to be used as service parts on 2001-2012 Ford Escape, 2001-2011 Mazda Tribute, and 2005-2011 Mercury Mariner vehicles. The affected…
NHTSA 15E045000
Suspension › Front › Wheel Bearing
Date: 03/06/2015
The Timken Company (Timken) is recalling certain aftermarket front wheel bearings, part number 510072, sold from January 22, 2015, to May 21, 2015, to be used as service parts on 2001-2012 Ford Escape, 2001-2011 Mazda Tribute, and 2005-2011 Mercury Mariner vehicles. The affected…
NHTSA 15E045000
Suspension › Front › Wheel Bearing
Date: 03/06/2015
The Timken Company (Timken) is recalling certain aftermarket front wheel bearings, part number 510072, sold from January 22, 2015, to May 21, 2015, to be used as service parts on 2001-2012 Ford Escape, 2001-2011 Mazda Tribute, and 2005-2011 Mercury Mariner vehicles. The affected…
NHTSA 15E045000
Suspension › Front › Wheel Bearing
Date: 03/06/2015
The Timken Company (Timken) is recalling certain aftermarket front wheel bearings, part number 510072, sold from January 22, 2015, to May 21, 2015, to be used as service parts on 2001-2012 Ford Escape, 2001-2011 Mazda Tribute, and 2005-2011 Mercury Mariner vehicles. The affected…
NHTSA 15E045000
Suspension › Front › Wheel Bearing
Date: 03/06/2015
The Timken Company (Timken) is recalling certain aftermarket front wheel bearings, part number 510072, sold from January 22, 2015, to May 21, 2015, to be used as service parts on 2001-2012 Ford Escape, 2001-2011 Mazda Tribute, and 2005-2011 Mercury Mariner vehicles. The affected…
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)
393 owner complaints filed with the U.S. National Highway Traffic Safety Administration (NHTSA) for the Mercury Mariner across model years 2005–2011. These are real, verified reports submitted by vehicle owners.
19 crash reports 17 injuries
Complaints by model year (most reported first)
Model year 201160
Model year 201060
Model year 200960
Model year 200860
Model year 200660
Model year 200560
Model year 200733
Most reported components (all years)
Steering158
Power Train55
Electrical System34
Vehicle Speed Control33
Fuel/Propulsion System32
Engine31
Sample reports
The contact owns a 2009 Mercury Marnier. The contact stated while driving at an undisclosed speed, the steering wheel started to shake. The electric power steering (EPS) warning light was illuminated. The vehicle was taken to an independ… (MY 2009)
The contact owns a 2008 Mercury Mariner. The contact received notification of NHTSA Campaign Number: 14V284000 (Steering). The contact took the vehicle to a local dealer and had the recall repair completed. The vehicle was not repaired.… (MY 2008)
TL* THE CONTACT OWNS A 2005 MERCURY MARINER. WHILE THE VEHICLE WAS STATIONARY, THE CONTACT NOTICED THAT THE FRAME WAS SEVERELY RUSTED AND CORRODED WITH HOLES. BROWNELL MOTORS INC IN FISHKILL, NEW YORK WAS MADE AWARE OF THE FAILURE AND ST… (MY 2005)
GAS MILEAGE HAS SUDDENLY AND MARKEDLY PLUMMETED ON HIGHWAY DRIVING. AIR FILTER REPLACED - NO CHANGE. THERE HAS BEEN NO CHANGE IN DRIVING PATTERNS. IT HAS GONE FROM AROUND 20 HWY TO AROUND 10 HWY OUT OF THE BLUE - NO ENGINE/TRANNY/BRAK… (MY 2005)
Source: NHTSA complaints database (U.S. data.gov). Figures cover production years 2005–2011.
Frequently Asked Questions
Does the Mercury Mariner have any safety recalls?
Yes — 22 official NHTSA recall campaign(s) affect this model, mainly: FUEL SYSTEM, GASOLINE:DELIVERY:FUEL PUMP, SUSPENSION:FRONT:WHEEL BEARING. Check the recalls section for your exact year/VIN.
What does fault code P0300 mean on the Mercury Mariner?
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 Mariner?
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 Mariner?
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 Mariner?
Yes — 72 of 379 real owner reports filed with NHTSA mention the engine. One owner reported: “CD4E - ENGINE STALLING ON ENGAGEMENT/STOPPING. VEHICLE STALLED AT THE RED LIGHT OF AN EXIT RAMP OFF THE HIGHWAY. VEHICLE STALLED WHEN AT A COMPLETE STOP AND WOULD NOT ENGAGE WHEN PUT INTO DRIVE OR REV…” See the owner-reported complaints section below for more.
Are electrical problems common on the Mercury Mariner?
Yes — 126 of 379 real owner reports filed with NHTSA mention the electrical. One owner reported: “TL* THE CONTACT OWNS A 2005 MERCURY MARINER. WHILE THE CONTACT WAS DRIVING 45 MPH, ANOTHER VEHICLE VEERED INTO HIS PATH WITH THE BRIGHT LIGHTS ILLUMINATED. TO AVOID CRASHING INTO THE OTHER VEHICLE, TH…” See the owner-reported complaints section below for more.
Are steering problems common on the Mercury Mariner?
Yes — 173 of 379 real owner reports filed with NHTSA mention the steering. One owner reported: “RECEIVED AN ABS TROUBLE CODE. MECHANIC CHECKED AND SAID IT WAS THE ABS TONE WHEEL ON THE OUTTER LEFT FRONT CV JOINT. MECHANIC SAID THIS WAS A COMMON PROBLEM WITH FRONT TONE WHEELS ON THE MERCURY MARI…” See the owner-reported complaints section below for more.
Which OBD2 fault codes are commonly documented for the Mercury Mariner (2005–2011)?
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 Mariner (2005–2011) be serviced?
Routine maintenance for the Mercury Mariner (2005–2011) 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.