2004 Mercury Grand Marquis: Recalls, Problems & MPG
Here are the deets on the 2004 Mercury Grand Marquis: 1 recall, 348 owner complaints and up to 18 mpg combined.

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.
Exterior lights Vehicle recall #15V861000 · 2015 · 296,004 vehicles
What's wrong: The affected vehicles have a lighting control module (lcm) that May fail, resulting in a loss of headlights.
Why it matters: A loss of headlights can reduce driver visibility and increase the risk of a crash.
The fix: Ford will notify owners, and dealers will replace the lcm, free of charge. The recall began April 14, 2017.
1 aftermarket equipment / tire recall replacement parts sold to fit this car, not the car itself
Fuel system Equipment recall #06E056000 · 2006 · 58,640 vehicles
What's wrong: Certain aftermarket fuel filters sold under the purolator brand name, p/n f65277, shipped from January 16 through June 2, 2006, for use on the above listed passenger vehicles. Due to incorrect design, the quick connectors May not fully seat with the tube interface, even though the person making the connection May believe that the quick connector is fully attached.
Why it matters: Failure of this connection could lead to fuel spillage and, in the presence of an ignition source, a fire could occur.
The fix: Ufi will notify owners and replace the filters free of charge. The recall began on August 4, 2006.
Most-reported problems
Owner complaints filed with NHTSA, by component. One complaint can list several components. 4 mention a fire, 10 injuries and 1 deaths were reported.
What owners describe
- Exterior lights (207): the most common themes are warning light on (24), stalls / loses power (10), electrical failure (10).
- Steering (65): the most common themes are steering problems (64), noise or vibration (7).
- Electrical (40): the most common themes are electrical failure (7), stalls / loses power (3), warning light on (3).
- Speed control / throttle (23): the most common themes are sudden acceleration (6).
The 2004 Mercury Grand Marquis has 348 owner complaints, ranking #3 of 22 Grand Marquis model years for complaints (2.1× the average Grand Marquis year). Complaints peaked in 2014 (50 filed that year). The typical problem showed up when the car was about 9 years old, at a median of 82,000 miles. Neighboring years: 2003 (362 complaints, 1 recalls), 2005 (488 complaints, 4 recalls).
Engines & fuel economy (EPA)
| Engine | Transmission | Drive | City | Hwy | Comb. | Fuel |
|---|---|---|---|---|---|---|
| 4.6 L 8-cyl | Automatic 4-spd | Rear-Wheel Drive | 15 | 23 | 18 | Regular |
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 2004 Mercury Grand Marquis.
Closest thing to the factory manual for most years. Pay once, keep it.
Most $25–$78, one-timePro-shop repair procedures, wiring diagrams and TSBs for your exact car.
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FAQ
Does the 2004 Mercury Grand Marquis have any recalls?
Yes. NHTSA lists 1 vehicle recall for the 2004 Mercury Grand Marquis, 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 2004 Mercury Grand Marquis problems?
Owners have filed 348 complaints with NHTSA. The most-reported areas are exterior lights (207), steering (65), electrical (40).
What gas mileage does the 2004 Mercury Grand Marquis get?
EPA ratings run up to 18 mpg combined (4.6 L, Automatic 4-spd), across 1 engine and transmission combos.
Where can I get a 2004 Mercury Grand Marquis 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.