STARTED VEHICLE TO MOVE IT IN MY DRIVEWAY. PUT IT IN DRIVE AND THROTTLE STUCK OPEN AND VEHICLE SLAMMED MY GARAGE CORNER. TRIED PUTTING IT IN PARK AND IT WENT INTO REVERSE (BRAKE OVERRIDE DID NOT WORK) INSTEAD AND CROSSED STREET, WENT ACROSS NEIGHBORS LANDSCAPING STONES AND SLAMMED INTO THE HOUSE NEXT DOOR'S FRONT PORCH AT WHICH TIME THE IGNITION SHUT DOWN AND THE CAR CAME TO A STOP. MANY THOUSA…
2005 Mercury Grand Marquis electrical problems
severe 73 complaints filed with NHTSA · avg repair $850
Complaints
73
Recalls
0
Crashes
3
Avg fix
$850
What owners are reporting 5 most recent
I WAS DRIVING ON I-81 AT NIGHT, I OPERATED MY LEFT TURN SIGNAL WHILE ACCELERATING TO ABOUT 75 MPH TO PASS A TRUCK AND MY HEADLIGHTS WENT OUT. I ACCIDENTLY FORCED THE HIGH BEAM ON BY FLIPPING THE TURN/HIGH BEAM LEVER AND I HELD THE LEVER IN THAT POSITION UNTIL I COULD RETURN TO THE RIGHT LANE BEHIND THE TRUCK AND STOP ON THE ROADSIDE. TO SAY I THOUGHT I WAS GOING TO DIE IS NOT SIMPLY DRAMA. THE …
I PURCHASED A 2005 GRAND MARQUES FROM THIS COMPANY. I WAS DRIVING ONE DAY (11/5/07) WHEN THE VEHICLE CAUGHT ON FIRE, I WAS LUCKY ENOUGH TO BE IN FRONT OF FIRESTONE SERVICE STATION. AS SOON AS I EXIT THE VEHICLE THE ENGINE BURST INTO FLAMES. FIRESTONE ALONG WITH THE ASSISTANT OF THE CHARLOTTE FIRE DEPT CAME TO MY RESCUE SIDING THAT IT WAS AN ELECTRICAL FIRE. THE CAR WAS TOWED BACK TO THE DEALER…
THE LOW BEAM HEADLIGHTS FAILED WHILE DRIVING AT VARIOUS SPEEDS WITHOUT WARNING. I WAS FORCED TO DRIVE WITH THE HIGH BEAMS ILLUMINATED. THIS HAPPENS VERY FREQUENTLY. THE VEHICLE WAS NOT TAKEN TO THE DEALER FOR DIAGNOSTIC TESTING. THE MANUFACTURER WAS NOT NOTIFIED OF THE FAILURE. I CALLED THE DEALER. THEY SAID IT WAS NOT COVERED UNDER WARRANTY. HE SAID THE PART WOULD BE ABOUT $600, AND WITH LABOR AL…
2005 MERCURY GRAND MARQUIS CAUGHT FIRE. CONSUMER STATES THE ENGINE IGNITED THE FIRE WHEN SHE TURNED INTO A PARKING LOT. SHE STATED THAT THERE WAS NO APPARENT REASON FOR THE FIRE. *KB THE CONSUMER WAS INFORMED THE FIRE WAS DUE TO AN ELECTRICAL DEFECT. *JB
Common questions
How serious is the electrical problem on the 2005 Mercury Grand Marquis?
It's a meaningful issue. 73 complaints have been filed and the failure mode causes operational problems for owners. Repairs average $850.
At what mileage does the electrical typically fail?
Mileage data is limited for this issue. Owners report failures across a wide range, suggesting cause is more about driving conditions and maintenance than mileage alone.
What does it cost to fix?
Independent shops typically charge around $850 for electrical repairs on this vehicle. Dealer pricing tends to run 20-40% higher. The exact figure depends on the specific failure mode, parts availability, and your local labor rates. If you're outside factory warranty, an extended service contract often covers this category.
Are there any recalls related to electrical?
No active recalls currently cover electrical issues on this vehicle. The complaints filed represent owner-reported failures that haven't risen to the level of a manufacturer-issued recall — but they're still worth knowing about before you buy or budget for repairs.
Other problem areas on this vehicle
Complaint and recall data sourced from the National Highway Traffic Safety Administration (NHTSA)
public records database. Severity ratings are derived from reported crashes, fires, injuries, and fatalities.
Repair cost estimates are independent-shop national averages and may differ in your area.
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