MotorDeets

2009 Mercury Mariner: Recalls, Problems & MPG

Here are the deets on the 2009 Mercury Mariner: 1 recall, 315 owner complaints and up to 23 mpg combined.

1vehicle recalls
315owner complaints
9mention a crash
23best combined mpg
2009 Mercury Mariner
Photo: MercurySable99 · CC BY-SA 4.0 · Wikimedia Commons. Representative photo of this generation; trim may differ.

Recalls

1 vehicle recall from the manufacturer, plus 1 equipment/tire recall that can apply. Repairs are free. Check your VIN to see if one is still open on your car.

Steering Vehicle recall #14V284000 · 2014 · 740,878 vehicles

What's wrong: The affected vehicles have a steering torque sensor that May not be able to properly detect driver steering input. As a result, the system could remove the electric power steering (eps) assist.

Why it matters: If power steering assist is lost, greater driver effort would be required to steer the vehicle at low speeds, increasing the risk of a crash.

The fix: Ford will notify owners, and dealers will update the software for the power steering control module (pscm) and the instrument cluster module, free of charge. If a vehicle shows a history of a loss of the torque sensor signal or fault codes relating to the pscm when the vehicle is brought in for the…

1 aftermarket equipment / tire recall replacement parts sold to fit this car, not the car itself
Suspension Equipment recall #15E045000 · 2015 · 576 vehicles

What's wrong: The affected wheel bearings have incorrect dimensions of a 42mm bore, 76mm outer dimension, and 39mm width, instead of a 42mm bore, 78mm outer dimension and a 45mm width.

Why it matters: Use of an incorrectly sized wheel bearing can adversely affect the braking and steering of the vehicle, increasing the risk of a crash.

The fix: Timken has begun notifying distributors who will offer purchasers replacement wheel bearings, free of charge. The recall began on May 21, 2015.

Most-reported problems

Owner complaints filed with NHTSA, by component. One complaint can list several components. 0 mention a fire, 3 injuries and 0 deaths were reported.

Steering167
Engine53
Transmission & drivetrain44
Speed control / throttle41
Electrical22
Fuel system15
Fuel & propulsion15
Other / unknown15

What owners describe

The 2009 Mercury Mariner has 315 owner complaints, ranking #2 of 11 Mariner model years for complaints (2.7× the average Mariner year). Complaints peaked in 2013 (64 filed that year). The typical problem showed up when the car was about 7 years old, at a median of 97,000 miles. Neighboring years: 2008 (461 complaints, 3 recalls), 2010 (270 complaints, 2 recalls).

Engines & fuel economy (EPA)

EngineTransmissionDriveCityHwyComb.Fuel
2.5 L 4-cylAutomatic 6-spdFront-Wheel Drive202823Regular
3.0 L 6-cylAutomatic 6-spdFront-Wheel Drive182621Regular
2.5 L 4-cylAutomatic 6-spd4-Wheel or All-Wheel Drive192521Regular
3.0 L 6-cylAutomatic 6-spd4-Wheel or All-Wheel Drive172420Regular

Want the full repair deets? Get the factory manual.

Recall and complaint data tells you what goes wrong. A service manual tells you how to fix it: torque specs, wiring diagrams, fluid capacities and step-by-step procedures for the 2009 Mercury Mariner.

eManualOnline Download (PDF), keep forever

Closest thing to the factory manual for most years. Pay once, keep it.

Most $25–$78, one-time
Check 2009 Mercury Mariner manual
Mitchell 1 DIY Online access, factory-level data

Pro-shop repair procedures, wiring diagrams and TSBs for your exact car.

From $19.99/mo · $39.99/yr
Check 2009 Mercury Mariner manual
ALLDATAdiy Online access, factory OEM info

OEM procedures, specs and recall/TSB info, the same source many shops use.

From $19.99/mo · $59.99/yr
Check 2009 Mercury Mariner manual
Haynes Print book or AllAccess online

Step-by-step photos written from a real teardown. Great for first-timers.

Books ~$30–$40 · AllAccess $34.99/mo
Check 2009 Mercury Mariner manual

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FAQ

Does the 2009 Mercury Mariner have any recalls?

Yes. NHTSA lists 1 vehicle recall for the 2009 Mercury Mariner, plus 1 equipment or tire recalls that can apply. Recall repairs are free at any dealer, no matter how old the car is. Check your VIN at nhtsa.gov/recalls.

What are the most common 2009 Mercury Mariner problems?

Owners have filed 315 complaints with NHTSA. The most-reported areas are steering (167), engine (53), transmission & drivetrain (44).

What gas mileage does the 2009 Mercury Mariner get?

EPA ratings run up to 23 mpg combined (2.5 L, Automatic 6-spd), across 4 engine and transmission combos.

Where can I get a 2009 Mercury Mariner repair manual?

eManualOnline sells downloadable manuals, Mitchell 1 DIY and ALLDATAdiy sell online access to factory repair data, and Haynes sells printed guides and online access. Pick a download if you want to keep it, or a subscription for wiring diagrams and TSBs.

Other Mariner years

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