2009 Mercury GRAND MARQUIS problems and owner complaints
Explore the records behind recurring owner reports.
Key facts
26 owner complaints analyzed
2 distinct recall campaigns
34,000 mi median reported failure mileage
Scope: 2009 model year. Data snapshot: . 20 complaints include usable failure mileage.
Most common problems
Steering is the most frequently named component, appearing in 5 of 26 complaints (19.2%). A complaint can name multiple components.
| Topic | Matching reports | Share of complaints |
|---|---|---|
| Braking behavior | 8 | 30.8% |
| Steering behavior | 4 | 15.4% |
| Transmission and shifting | 2 | 7.7% |
| Electrical and battery issues | 2 | 7.7% |
| Fuel system concerns | 2 | 7.7% |
Topic matches use published keyword rules. They describe mentions, including negations or comparisons, and do not confirm a diagnosis. Read the matching rules.
Component breakdown
Number of unique complaints naming each component. Top eight shown.
| Category | Count |
|---|---|
| Steering | 5 |
| Electrical System | 4 |
| Service Brakes | 4 |
| Vehicle Speed Control | 4 |
| Engine | 2 |
| Fuel/Propulsion System | 2 |
| Power Train | 2 |
| Tires | 2 |
Steering: 5; Electrical System: 4; Service Brakes: 4; Vehicle Speed Control: 4; Engine: 2; Fuel/Propulsion System: 2; Power Train: 2; Tires: 2
Reported problems by failure mileage
Complaint counts in mileage bands. These are not failure rates per vehicle or mile.
| Category | Count |
|---|---|
| Under 25,000 | 8 |
| 25,000 to 49,999 | 7 |
| 50,000 to 74,999 | 2 |
| 75,000 to 99,999 | 1 |
| 100,000 to 149,999 | 0 |
| 150,000 and above | 2 |
Under 25,000: 8; 25,000 to 49,999: 7; 50,000 to 74,999: 2; 75,000 to 99,999: 1; 100,000 to 149,999: 0; 150,000 and above: 2
Under 25,000 miles has the most reports with usable mileage (8). 6 complaints have missing, zero or invalid mileage.
Complaints over time
Year the complaint was filed, not the vehicle model year or incident year. The snapshot year is partial.
| Category | Count |
|---|---|
| 2009 | 1 |
| 2010 | 5 |
| 2011 | 1 |
| 2012 | 3 |
| 2013 | 4 |
| 2014 | 2 |
| 2015 | 2 |
| 2016 | 2 |
| 2017 | 2 |
| 2019 | 1 |
| 2021 | 1 |
| 2023 | 1 |
| 2024 | 1 |
2009: 1; 2010: 5; 2011: 1; 2012: 3; 2013: 4; 2014: 2; 2015: 2; 2016: 2; 2017: 2; 2019: 1; 2021: 1; 2023: 1; 2024: 1
Pattern summary
Steering leads the component reports. Braking behavior appears in 8 complaint narratives. Steering behavior appears in 4 complaint narratives. Transmission and shifting appears in 2 complaint narratives. Use these patterns to inspect individual reports and prepare questions for a mechanic.
Calculated from recorded counts. An AI narrative has not been published for this selection.
Complaint evidence
Examples provide context, not a representative sample or a verified diagnosis.
Owner report 10290778 · 2009-11-03 (November 3, 2009)
TL* THE CONTACT OWNS A 2009 MERCURY GRAND MARQUIS. HE APPLIED PRESSURE TO THE BRAKE PEDAL WHEN ATTEMPTING TO PARK THE VEHICLE, BUT IT LURCHED FORWARD. THE VEHICLE CRASHED THROUGH THE GARAGE WALLS INTO THE ADJACENT ROOM. THERE WAS NO PERSONAL INJURY. THERE WERE DAMAGES TO THE WALLS AND FURNITURE WHICH OCCUPIED THE ADJACENT ROOM. THE FRONT END OF THE VEHICLE SUSTAINED MODERATE DAMAGES. THE VEHICLE WAS TOWED TO AN AUTHORIZED DEALER FOR DIAGNOSTIC TESTING. THE VEHICLE WAS REPAIRED FOR THE BODY DAMAGES. THE TECHNICIAN WAS UNABLE TO DETERMIN…
Owner-reported narrative. 10,000 miles reported. Look up ODI 10290778 at NHTSA ↗
Owner report 10347396 · 2010-08-05 (August 5, 2010)
TL* THE CONTACT OWNS A 2009 MERCURY GRAND MARQUIS LS. THE CONTACT STATED THAT THE ACCELERATOR AND BRAKE PEDALS WERE ENTIRELY TOO CLOSE TO EACH OTHER, CAUSING THE CONTACT TO SIMULTANEOUSLY DEPRESS BOTH PEDALS. THE DEALER WAS CONTACTED AND THE CONTACT WAS ADVISED THE BLEED THE BRAKES. THE DEALER ALSO ADVISED THAT THE SPECIFICATIONS OF BOTH PEDALS CONFORMED TO GOVERNMENT REGULATIONS. THE VEHICLE WAS NOT REPAIRED. THE CONTACT BELIEVED THE PEDAL DESIGN WAS DEFECTIVE. THE FAILURE MILEAGE WAS 12,932 AND THE CURRENT MILEAGE IS 23,000. UPDATED 10/13/1…
Owner-reported narrative. 12,932 miles reported. Look up ODI 10347396 at NHTSA ↗
Owner report 10350356 · 2010-08-18 (August 18, 2010)
MERCURY GRAND MARQUIS AIR SUSPENSION IS TERRIBLE.(2009&2010) WHEN GOING OVER A BUMP THE CAR LIKE BOTTOMS OUT WITH A LOUD BANG. CAR SWAYS A LITTLE MUST HOLD ONTO THE STEERING WHEEL. COULD BE A SAFETY PROBLEM??? *TR
Owner-reported narrative. Look up ODI 10350356 at NHTSA ↗
Owner report 10555948 · 2013-12-13 (December 13, 2013)
TL* THE CONTACT OWNS A 2009 MERCURY GRAND MARQUIS. THE CONTACT RECEIVED NHTSA CAMPAIGN ID NUMBER 13V385000 (STEERING) HOWEVER, THE CONTACT WAS UNABLE TO HAVE THE VEHICLE SERVICED UNDER THE RECALL DUE TO THE REQUIRED PART NOT BEING AVAILABLE FOR THE REPAIR. THE MANUFACTURER WAS NOT NOTIFIED OF THE PROBLEM. THE CONTACT DID NOT EXPERIENCE A FAILURE.
Owner-reported narrative. Look up ODI 10555948 at NHTSA ↗
Owner report 10473193 · 2012-08-31 (August 31, 2012)
TL* THE CONTACT OWNS A 2009 MERCURY GRAND MARQUIS. THE CONTACT STATED THAT WHILE THE BRAKES WAS ENGAGED THERE WAS AN SUDDEN INCREASE ON ENGINE RPMS. THE CONTACT MENTIONED THAT THE REAR WHEELS STARTED TO SPIN AND IN ORDER TO STOP IT HE HAD TO SHIFT INTO NEUTRAL. THE VEHICLE WAS TAKEN TO THE DEALER WHO WAS UNABLE TO DUPLICATE THE FAILURE. THE FAILURE MILEAGE AND CURRENT MILEAGE WAS 33,000.
Owner-reported narrative. 33,000 miles reported. Look up ODI 10473193 at NHTSA ↗
Owner report 10514506 · 2013-05-31 (May 31, 2013)
I WAS DRIVING AT 45 MPH AND APPLIED THE BRAKE TO STOP. THE ENGINE REVVED TO 2,000 RPM. I WAS ABLE TO STOP WITH VERY HARD BRAKING USING BOTH FEET. THE ENGINE CONTINUE REVVING AT 2,000 RPM EVEN AFTER THE CAR HAD STOPPED. I PLACED THE TRANSMISSION IN NEUTRAL AND THE ENGINE REVVED EVEN FASTER. THE ENGINE DID NOT SLOW DOWN UNTIL I TURNED OFF THE IGNITION. AFTER LEAVING THE ENGINE OFF FOR AROUND TWO MINUTES, I RESTARTED THE ENGINE AND IT RESUMED RUNNING AT AROUND 500 RPM. MY 23 YEAR OLD SON WAS SEATED NEXT TO ME AND VERIFIED THAT NOTHING WAS …
Owner-reported narrative. 27,000 miles reported. Look up ODI 10514506 at NHTSA ↗
Owner report 10379674 · 2011-01-31 (January 31, 2011)
THE LEFT TURN SIGNALS (FRONT, REAR & DASH) BLINK FASTER THAN THE RIGHT ONES INDICATING A BURNT OUT BULB EVEN THOUGH THE LEFT BULBS WORK. WE REPLACED THE FRONT & REAR BULBS TWICE AND THEY WORKED NORMAL FOR A SHORT PERIOD OF TIME. THEN THEY REVERT TO BLINKING FAST. I REPLACED THE BULBS THE FIRST TIME AND THE DEALERSHIP SERVICE CENTER REPLACED THE BULBS THE SECOND TIME. THERE MUST BE SOMETHING WRONG IN THE ELECTRICAL SYSTEM. I'VE NOTICED THIS WITH OTHER GRAND MARQUIS ALSO. *TR
Owner-reported narrative. 17,445 miles reported. Look up ODI 10379674 at NHTSA ↗
Owner report 10534237 · 2013-08-08 (August 8, 2013)
I HAD CHECKED THE TIRE PRESSURES PRIOR TO A ROAD TRIP AND FOUND THEM AT 38 PSI. I RESET THE PRESSURES TO THE SPEC OF 33 PSI. SHORTLY THE TIRE MONITOR CAME ON AND SIGNALED A LOW TIRE PRESSURE. I RECHECKED AND THEY WERE OK. DURING MY TRIP THE LIGHT WOULD KEEP COMING ON AND I TRIED TO RESET THE SYSTEM TO NO AVAIL. ON MY RETURN, THE POWER DOOR LOCKS KEPT MALFUNCTIONING. THE DOOR KEY PAD WOULD WORK SOMETIME FOR BOTH THE DOORS AND TRUNK. THE NEXT TIME THEY MIGHT NOT. THE DOOR SWITCHES ON BOTH PASSENGERS AND DRIVERS SIDE WOULD WORK SOMETIMES. WITH B…
Owner-reported narrative. 47,000 miles reported. Look up ODI 10534237 at NHTSA ↗
Owner report 10651727 · 2014-10-31 (October 31, 2014)
TL* THE CONTACT OWNS A 2009 MERCURY GRAND MARQUIS. THE CONTACT STATED THAT AFTER REFUELING, GASOLINE FUEL FUMES EMITTED INSIDE THE VEHICLE AND THE FUEL WOULD DISSIPATE TO HALF OF A TANK WITHIN TWENTY MINUTES OF DRIVING. THE DEALER DIAGNOSED THAT THE FUEL LINE, THE FUEL PUMP, AND THE FUEL SEAL NEEDED TO BE REPLACED. THE VEHICLE WAS REPAIRED. HOWEVER, THE FAILURE RECURRED. THE MANUFACTURER WAS NOT NOTIFIED OF THE FAILURE. THE APPROXIMATE FAILURE MILEAGE WAS 35,000.
Owner-reported narrative. 35,000 miles reported. Look up ODI 10651727 at NHTSA ↗
Owner report 10923797 · 2016-11-02 (November 2, 2016)
I NOTICED SOMETHING HANGING DOWN FROM THE BOTTOM OF THE VEHICLE AND ON INSPECTION DETERMINED IT TO BE A FUEL TANK SUPPORT STRAP. I TOOK THE VEHICLE TO MY MECHANIC FOR FURTHER INSPECTION AND WHEN HE PUT THE VEHICLE ON A LIFT ONE OF THE TWO SUPPORT STRAPS HAD CORRODED COMPLETELY IN TWO AND THE OTHER STRAP WAS LY CORRODED NEARLY AS BAD. IF THE SECOND STRAP HAD ALSO BROKEN AND ALLOWED THE FUEL TANK TO DROP AND DRAG ON THE PAVEMENT THERE COULD HAVE BEEN A SEVERE FIRE. I HAD MY MECHANIC REPLACE BOTH STRAPS IMMEDIATELY TODAY 11-2-16.
Owner-reported narrative. 80,500 miles reported. Look up ODI 10923797 at NHTSA ↗