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EquipmentPart report

2004 Mercury Grand Marquis Equipment Problems

Complaints
2about this part
Share
1%of 348 total for the year
Median mileage
77,000miles
Trend
Not enough dataFewer than 15 complaints, too few for a reliable trend.

NHTSA recorded 2 complaints about the equipment of the 2004 Mercury Grand Marquis, 1% of the 348 complaints for this model year. Where a mileage was given, the median is 77,000 miles.

Fewer than 15 complaints name this part, so treat the figures as a rough indication only.

Example complaints

Selected from NHTSA records; personal details are removed. They are consumer reports, not findings.

“Fuel pump and crankshaft sensor both went out on vehicle at same time. Repair of crankshaft sensor was a $400 and fuel pump repair was $740. Doors do not lock properly when using the key remote and lights inside the vehicle on controls flicker on and off. Heating element in leather seat on passenger side has never worked and had to replace tires due to unusual wear and tear. Cost to replace tires was $478. Driver sides door will not shut all the way due to alignment problems and this problem has not been corrected. Had to replace fuel filter due to leaking and this cost $178. …”

NHTSA complaint #10371083, filed 2010-12, 77,000 miles

“The contact owns a 2004 Mercury Grand Marquis. The contact stated whenever the air conditioner mechanism was activated the air failed to flow through the vents. The vehicle was taken to an independent mechanic, who informed the contact that the air conditioner control module needed to be replaced. The vehicle was not repaired. The manufacturer was not notified of the defect. The failure mileage was unavailable.”

NHTSA complaint #10588525, filed 2014-05

Related service bulletins

Equipment: other model years

YearComplaintsShare of year
201028%
200834%
200711%
200621%
200510%
200421%
200211%
200132%
200064%
199953%
199832%
199741%
199621%
199521%
199411%
199242%
199111%
198823%
198712%
1985210%
1983229%

Other parts of the 2004 Mercury Grand Marquis

Exterior lighting
207 complaints
Steering
65 complaints
Electrical system
40 complaints
Vehicle speed control
23 complaints
Visibility (wipers, defrost, mirrors)
11 complaints
Engine cooling
10 complaints
Transmission and drivetrain
9 complaints
Body and structure
8 complaints
Brakes
7 complaints
Air bags
6 complaints
Fuel system
6 complaints
Interior lighting
6 complaints

← All problems reported for the 2004 Mercury Grand Marquis

About this data. Data from NHTSA (ODI) complaints, recalls, TSBs and investigations, updated Oct 31, 2026. Complaints are unverified consumer reports and may be duplicated or inaccurate.

To check a specific vehicle for open recalls, use its VIN at nhtsa.gov/recalls. Methodology