Problems · by component

2004 Mercury Grand Marquis electrical system problems

43 owner complaints to NHTSA about the 2004 Mercury Grand Marquis cite electrical system, 12% of all 360 complaints for this model year.

Complaints
43
12% of all complaints
Crashes
1
Reported by owners
Fires
1
Reported by owners
Injuries
2
Reported by owners
01 —Owner reports

What owners say about the electrical system

Verbatim from NHTSA complaints, newest first
“The contact owns a 2004 Mercury Grand Marquis. The contact stated that while the vehicle was parked, the key fob became inoperable. The contact was not able to start the vehicle with the security warning light illuminated. The dealer was not contacted. The vehicle was not diagnosed or repaired. The manufacturer was not made aware of the failure. The failure mileage was approximately 90,000.”
Owner complaint to NHTSAFiled Aug 4, 2025Electrical systemODI 11678246
“Catalytic converter FAIL, engine idles rough while in park. HIGH Loss of engine power while driving Differentials in back tires are imbalanced…timing FAIL. Steering not calibrated, drivetrain out of sync altogether. Back wheels, left and right; randomly spin & torque hard while car is already in motion on any private road, hidden road, domestic road and high capacity, high speed highway, causing vehicle to fishtail uncontrollably and dangerously, and wildly side to side potentially veering off the road which could result in death unless the driver regains proper control of vehicle. Out of sync car computer and the mechanical devices built into car do not have proper timing performed on those particular moving parts altogether. The car was not manufactured properly mechanically nor electrically altogether. Headlights & electric system etc have an incomplete recall on my vehicle. [XXX] PARTS OF THIS DOCUMENT HAVE BEEN REDACTED TO PROTECT PERSONALLY IDENTIFIABLE INFORMATION PURSUANT TO THE FREEDOM OF INFORMATION ACT (FOIA), 5 U.S.C. 552(B)(6).”
Owner complaint to NHTSAFiled Aug 7, 2021Steering, Power train, Electrical systemODI 11428138
“SOMETIMES THE HEADLIGHTS FLICK ON AND OFF WHILE DRIVING. THEN WHEN THE CAR IS TURNED OFF, THERE IS A CLICKING NOISE IN THE DRIVER SIDE DASHBOARD THAT CONTINUES UNTIL IT DRAINS THE BATTERY. ALSO, SOMETIMES THE DOOR LOCKS CYCLE OPEN OR CLOSED WHETHER THE CAR IS DRIVING OR OFF. THIS HAS HAPPENED MULTIPLE TIMES AND CAUSED ME TO REPLACE THE BATTERY, AND STILL I HAVE TO JUMP THE CAR FROM TIME TO TIME. THIS HAS HAPPENED SEVERAL TIMES OVER THE PAST FEW YEARS, BUT ONLY NOW HAVE I FOUND THIS SITE TO REPORT IT TO.”
Owner complaint to NHTSAFiled Nov 23, 2020Electrical system, Exterior lightingODI 11375984
“LCM (LIGHTING CONTROL MODULE) RECALL FROM 2015. I BOUGHT THE CAR IN MARCH OF 2016 AND THE DEALER FAILED TO TAKE ADVANTAGE OF THE RECALL BEFORE I PURCHASED THE CAR.”
Owner complaint to NHTSAFiled Nov 14, 2018Electrical system, Exterior lightingODI 11151564
“2004 MERCURY GRAND MARQUIS. CONSUMER WRITES IN REGARDS TO REIMBURSEMENT FROM A RECALL NOTICE FROM FORD REGARDING A SAFETY ISSUE WITH THE LIGHTING CONTROL MODULE. *AS *TR”
Owner complaint to NHTSAFiled Oct 3, 2018Electrical system, Exterior lightingODI 11131329
“THERE WERE 355,000 RECALLS #14V704000, 13V385000 FOR 205-2011 MERCURY GRAND MARQUISE BUT DOES NOT INCLUDE 2004 MARQUISE, HOWEVER, MY MARQUISE ACCORDING TO MY MECHANIC SAYS THE ISSUE WITH MY CAR IS THE SAME. THERE ARE OVER 50 COMPLAINTS PERTAINING TO 2004 GRAND MARQUISE. FORD SAYS MY CAR DOES NOT APPEAR TO BE ON RECALL LIST HOWEVER IT SHOULD BE BECAUSE MY 2004 MERCURY GRAND MARQUISE HAS THE SAME EXACT ISSUE AS THE 2005-2011S. THIS IS A SAFETY ISSUE AND IT SHOULD IMMEDIATELY BE ADDRESSED, FORD HAS NOT IDENTIFIED MY VEHICLE EVEN THOUGH 2004'S WAS THE YEAR THESE CARS WERE BUILT.”
Owner complaint to NHTSAFiled Aug 27, 2018Steering, Electrical system, Unknown or otherODI 11122788

Showing 6 of 43 reports. Read every report on NHTSA.gov.

Data from NHTSA Complaints API (owner reports, unverified) · synced Nov 9, 2026NHTSA vehicle page

Complaints are unverified owner reports to NHTSA and are not normalized for sales volume. One complaint can cite several components.

Other 2004 Grand Marquis problem areas