RoadVitals

2004 Mercury Grand Marquis Problems

Owner-reported complaints filed with NHTSA, grouped by component

Data refreshed

Owner complaintsComplaints are reports submitted to NHTSA by owners and drivers. NHTSA does not verify most reports before publishing them, and a complaint does not establish that a defect exists. Volume is influenced by how many of a vehicle were sold, how long it has been on the road, and how much attention an issue has received.
347
Latest Aug 29, 2025
Components namedHow many of our component categories appear on at least one report for this model year. One report can name several.
17
Crash or fire reportedComplaints whose submitter recorded that a crash or a fire occurred. These are the reporter's own answers on the NHTSA form, not verified findings.
21

What this page shows

Everything below is an owner-reported complaint submitted to NHTSA about the 2004 Mercury Grand Marquis, grouped by the component NHTSA recorded on the report. These are not confirmed defects, and they are not recalls. NHTSA does not verify most reports before publishing them, and a category with more reports in it is not evidence that a part is defective.

Complaints are reports submitted by owners and drivers to NHTSA. They are not verified and do not establish that a defect exists.

Reports by component

Ranked by how many owner reports name each component category

Percentages are of component mentions. A single complaint can name more than one component, so these do not sum to the total complaint count.

Each component in detail

What the reports in each category say, in the owners' own words

Exterior lighting

Reports naming headlights, tail lights, turn signals and other exterior lighting.

205
reports

From owner reports, verbatim

The contact owns a 2004 Mercury Grand Marquis. The contact received NHTSA Campaign Number: 15V861000 (Exterior Lighting). The contact stated that while driving at night, the headlights were flickering and became inoperable. Occasionally, the headlights operated as designed. There were no warning lights illuminated. The contact called the local dealer and was informed that the parts were not yet available. The vehicle was not diagnosed or repaired. The contact was an independent mechanic and used a module assembly repair kit to repair the vehicle, but the failure reoccurred. The manufacturer was contacted, but no additional assistance was provided. The failure mileage was approximately 116,000.

NHTSA ID 11683841 · filed Aug 29, 2025

Auto lights stopped working. Tail lights will not come on

NHTSA ID 11670846 · filed Jul 2, 2025
All 205 reports naming exterior lighting

Steering

Reports naming the steering system — racks, columns, power-steering assist and steering linkage.

65
reports

From owner reports, verbatim

The contact owns a 2004 Mercury Grand Marquis. The contact stated that while driving at an undisclosed speed, the steering wheel was loose and made an abnormal sound while turning. The vehicle was taken to an independent mechanic, who diagnosed that the steering shaft was corroded, and the bearing had collapsed. The contact was informed that the steering shaft needed to be replaced. The vehicle was not repaired. The manufacturer was made aware of the failure but confirmed that there was no recall associated with the VIN. The failure mileage was approximately 116,000.

NHTSA ID 11532214 · filed Jul 14, 2023

Steering of vehicle has become progressively more difficult. The steering wheel is very difficult to turn. Not being able to rapidly turn wheel places driver at risk to avoid any potential collision. Vehicle has been inspected by independent repair shop. Their assessment is corrosion on steering shaft joints is cause of issue.

NHTSA ID 11466693 · filed May 31, 2022
All 65 reports naming steering

Electrical

Reports naming the electrical system — wiring, battery, charging, control modules, infotainment and electrical accessories.

40
reports

From owner reports, verbatim

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.

NHTSA ID 11678246 · filed Aug 4, 2025

Auto lights stopped working. Tail lights will not come on

NHTSA ID 11670846 · filed Jul 2, 2025
All 40 reports naming electrical

Driver assistance

Reports naming forward-collision avoidance, lane keeping, back-over prevention, cruise control and related electronic driver-assistance systems.

23
reports

From owner reports, verbatim

While driving, I came to a stop light and suddenly, the car idled high and lurched forward while my foot was on the brake, luckily, I was stopped well away from the vehicle in front of me. The car idled high and seemed to have a mind of it's own. I took the back roads home and backed into our garage. The car smelled hot, and I though I had smoked my brakes, trying to keep control of it. Later that night, I told my husband about the car's actions and he did not believe me, though my daughter who was with me at the time confirmed that the car had indeed accelerated on it's own. My husband started the car and it did idle high and get hot once again, although only parked with no one in it. He thought he knew what the problem was and we turned off the car and closed the hood and went inside to order the part. A few minutes later, we heard a couple popping noises and I opened the door that led into the garage from the basement. Smoke was coming into the house and my husband said that a flame shot over my head. The car had caught on fire under the closed hood. We called the fire department, but by the time they arrived, a good portion of the basement was on fire. The house was a total loss. My husband though that the pvc elbow under the hood was sticking closed, so that is the part we were going to order. Unsure, if that was the real cause or not. The car did not have any warning lights or any other indications of a problem before this incident.

NHTSA ID 11482417 · filed Sep 1, 2022

VEHICLE HEADLIGHTS WORK INTERMITTENTLY . CRUSE CONTROL DOES NOT RESET OR TURN ON WHEN SUPPOSED TO. THIS IS ALSO AN INTERMITTENT PROBLEM, SOMETIMES RESETTING, AND SOMETIMES NOT. HEADLIGHTS WOULD SOMETIMES NOT TURN ON WHEN DRIVING UNLESS PULLING TURN SIGNAL ARM TOWARD STEERING WHEEL AND HOLDING. HIGH BEAMS ONLY WOULD WORK.

NHTSA ID 10779135 · filed Oct 1, 2015
All 23 reports naming driver assistance

Engine

Reports naming the engine itself — including stalling, misfires, oil consumption, cooling and internal engine components.

13
reports

From owner reports, verbatim

While driving, I came to a stop light and suddenly, the car idled high and lurched forward while my foot was on the brake, luckily, I was stopped well away from the vehicle in front of me. The car idled high and seemed to have a mind of it's own. I took the back roads home and backed into our garage. The car smelled hot, and I though I had smoked my brakes, trying to keep control of it. Later that night, I told my husband about the car's actions and he did not believe me, though my daughter who was with me at the time confirmed that the car had indeed accelerated on it's own. My husband started the car and it did idle high and get hot once again, although only parked with no one in it. He thought he knew what the problem was and we turned off the car and closed the hood and went inside to order the part. A few minutes later, we heard a couple popping noises and I opened the door that led into the garage from the basement. Smoke was coming into the house and my husband said that a flame shot over my head. The car had caught on fire under the closed hood. We called the fire department, but by the time they arrived, a good portion of the basement was on fire. The house was a total loss. My husband though that the pvc elbow under the hood was sticking closed, so that is the part we were going to order. Unsure, if that was the real cause or not. The car did not have any warning lights or any other indications of a problem before this incident.

NHTSA ID 11482417 · filed Sep 1, 2022

The contact owns a 2004 Mercury Grand Marquis. The contact stated that she noticed a leak underneath her vehicle with the check engine and coolant warning lights illuminated. The contact had taken the vehicle to an independent mechanic where it was discovered that coolant had been leaking from a crack in the intake manifold. The dealer nor the manufacturer had been notified of the failure. The vehicle had yet to be repaired. The failure mileage was approximately 150,000.

NHTSA ID 11441976 · filed Nov 29, 2021
All 13 reports naming engine

Visibility

Reports naming windshields, glass, wipers, defrosters and mirrors.

11
reports

From owner reports, verbatim

WHILE DRIVING, THE VISIBILITY WIPERS ENGAGED WITH OUT BEING TURNED ON BY ME. THE CLEANER SPRAYED THE ENTIRE CONTENTS OUT FROM RESERVOIR WITH OUT ME PRESSING THE BUTTON. THIS ALSO OCCURED WHILE VEHICLE WAS NOT TURNED ON WITH THE KEY. VISIBILITY WIPERS WILL NOT TURN ON WHEN TURNED TO ANY SPEED EXCEPT HIGH.

NHTSA ID 10911005 · filed Oct 2, 2016

TL* THE CONTACT OWNS A 2004 MERCURY GRAND MARQUIS. THE CONTACT STATED THAT THE WINDSHIELD WIPERS AND THE WASHER ACTIVATED WITH NO WARNING SEVERAL TIMES. THE CONTACT HAD A MECHANIC REPLACE THE WIPER MOTOR TWICE BUT THE FAILURE RECURRED. THE CONTACT WAS TO DETERMINE IF THE MECHANIC WOULD REPLACE THE PART A THIRD TIME OR HAVE THE REPAIRS PERFORMED BY A DEALER. THE MANUFACTURER WAS NOT NOTIFIED OF THE FAILURE. THE APPROXIMATE FAILURE MILEAGE WAS 70,000. UPDATED 06/29/16*LJ *CN

NHTSA ID 10864244 · filed May 10, 2016
All 11 reports naming visibility

Interior & seats

Reports naming seats, latches, locks, linkages and interior fittings.

8
reports

From owner reports, verbatim

The contact's husband owns a 2004 Mercury Grand Marquis. The contact's husband had received notification of NHTSA Campaign Number: 15V861000 (Exterior Lighting). The vehicle was taken to a local dealer for the recall repair. The vehicle was repaired; however, the contact was made aware that only the light control module (LCM) module harness was replaced and not the light control module itself. The contact also stated that after the vehicle was returned, the driver's door latch was fractured, and the front passenger’s side headlight failed to illuminate intermittently. The contact made the dealer aware of the failure and was informed that the cost of the repair was her responsibility. The manufacturer was made aware of the failure. The approximate failure mileage was 117,000.

NHTSA ID 11516775 · filed Apr 12, 2023

TL* THE CONTACT OWNS A 2004 MERCURY GRAND MARQUIS. WHILE DRIVING APPROXIMATELY 50 MPH, THE HEADLIGHTS SUDDENLY FAILED. THE HEADLIGHTS BECAME OPERABLE WITHIN TEN MINUTES. THE MALFUNCTION OCCURRED FOUR TIMES. THE VEHICLE WAS TAKEN TO AN AUTHORIZED DEALER TWICE FOR THE SAME FAILURE. THE SECOND TIME A DIAGNOSTIC TEST WAS PERFORMED, THE TECHNICIAN STATED THE COMPUTER CHIP NEEDED TO BE REPLACED. THE VEHICLE WAS REPAIRED. THE MANUFACTURER WAS NOTIFIED OF THE DEFECT. THE APPROXIMATE FAILURE MILEAGE WAS 80,000..... UPDATED 03-28-13 *BF THE CONSUMER STATED AT NO TIME WHEN THE LIGHTS WENT OFF DID AN INDICATOR ON THE DASH BOARD COME ON. THE DEALER ADVISED THE LIGHTING CONTROL MODULE NEEDED TO BE REPLACED. UPDATED 04/09/2013 *JS

NHTSA ID 10495329 · filed Jan 31, 2013
All 8 reports naming interior & seats

Body & structure

Reports naming the vehicle structure, frame, body panels, doors, hood and trim.

8
reports

From owner reports, verbatim

ON DECEMBER 23, 2015 I WAS DRIVING MY 2004 MERCURY GRAND MARQUIS THROUGH AN INTERSECTION IN HARRIS COUNTY, TEXAS. I HAD JUST RECEIVED A GREEN LIGHT AND WAS PROCEEDING TO MAKE A LEFT TURN WHEN MY VEHICLE WAS HIT BY ANOTHER VEHICLE IN THE DRIVER'S SIDE FRONT. THE DAMAGE TO MY VEHICLE WAS SEVERE. THE AT FAULT DRIVER'S INSURANCE COMPANY DECLARED MY VEHICLE A TOTAL LOSS. MY VEHICLE'S AIR BAGS DID NOT DEPLOY. I WAS WEARING MY SEAT AND SHOULDER BELTS AT THE TIME OF THE COLLISION. I WAS EXAMINED AT A NEARBY EMERGENCY ROOM. THEY SAID "NO SERIOUS INJURY" BUT MY ORTHOPEDIC SURGEON SAID I HAVE A SEPARATION OF MY LEFT SHOULDER.

NHTSA ID 10821877 · filed Jan 23, 2016

I NOTICE SMALL PAINT PEELING AT FIRST AROUND BACK WINDOW THEN SINCE HAVE SEVER PAINT ISSUES ON BOTH SIDES OF CAR NEAR REAR WINDOW GOING TO ROOF . ALSO OTHER POINTS ON CAR BODY PAINT PEELING NOT STAYING TO CAR SURFACE . THIS CAR HAS NOW ONLY 44000 AND HAS BEEN RARELY USED AND MOSTLY GARAGED . IT WAS A GIFT FROM MY PARENTS WHOM ARE NOW PASSED AWAY. I AM AT THIS POINT IN DISBELIEF BECAUSE I ONLY USE THIS CAR MOSTLY IN SUMMER . I AM DISABLED AND A US COAST GUARD VETERAN AND FEEL THIS IS AN ISSUE FROM IMPROPER PAINT APPLICATION OR METAL PREPARATION FORM DAY OF BUILD . RECALL NEEDED A.S.A.P. *TR

NHTSA ID 10573693 · filed Mar 20, 2014
All 8 reports naming body & structure

Brakes

Reports naming service brakes, the antilock braking system, brake hoses, master cylinders or the parking brake.

8
reports

From owner reports, verbatim

Auto lights stopped working. Tail lights will not come on

NHTSA ID 11670846 · filed Jul 2, 2025

The contact owns a 2004 Mercury Grand Marquis. The contact stated that while driving at an undisclosed speed, the headlights and brake lights were inoperable. The vehicle was taken to an independent mechanic who diagnosed that the headlight control module switch needed to be replaced. The vehicle was not repaired. The manufacturer was made aware of the failure. The failure mileage was approximately 164,000.

NHTSA ID 11478671 · filed Aug 10, 2022
All 8 reports naming brakes

Airbags

Reports naming the air-bag system — deployment behaviour, inflators, sensors and warning lights.

6
reports

From owner reports, verbatim

TL* THE CONTACT OWNS A 2004 MERCURY GRAND MARQUIS. WHILE THE VEHICLE WAS IN MOTION IN A PARKING AREA, THE DRIVER'S, FRONT PASSENGER, AND STEERING WHEEL AIR BAGS DEPLOYED WITH FORCE. THE DEPLOYMENT OCCURRED WITHOUT WARNING OR AN IMPACT AND A GRAYISH BLUE SUBSTANCE ENTERED INTO THE VEHICLE. THE FAILURE IMPACTED THE CONTACT'S VISIBILITY. THE DRIVER WAS SHAKEN, BUT WAS NOT INJURED. THE INSURANCE COMPANY WANTED TO CONDUCT A COLLISION REPORT AND HAD NOT YET INVESTIGATED THE CAUSE OF THE AIR BAG DEPLOYMENT. BILL KNIGHT FORD (9607 S MEMORIAL DR, TULSA, OK 74133, (918) 526-2400) WAS NOTIFIED OF THE FAILURE, BUT HAD NOT YET SCHEDULED AN APPOINTMENT TO DIAGNOSE THE AIR BAG DEPLOYMENT. THE MANUFACTURER WAS CONTACTED AND HAD NOT ISSUED ANY AIR BAG RECALLS. THE VEHICLE WAS NOT REPAIRED. THE FAILURE MILEAGE WAS NOT AVAILABLE.

NHTSA ID 11191813 · filed Mar 27, 2019

I HAVE HAD MORE PROBLEMS WITH MY 2004 GRAND MARQUIS, THE LIGHTS DON'T WORK, HEADLIGHTS GO OFF WHILE DRIVING AT NIGHT, AIRBAGS DON'T WORK, ELECTRICAL, SEATS, STEERING, BRAKES, ALL OF THE ELECTRICAL, CATALYTIC CONVERTOR KEEPS GOING OUT, ALSO ENGINE PROBLEMS, AMONG MANY OTHER THINGS. I WAS IN AN ACCIDENT, WHERE MY STEERING DIDN'T WORK PROPERLY AND I WAS HIT BY SOMEONE, NOT MY FAULT, BUT MY CAR ENDED UP SPINNING SO BAD THAT I HIT MY HEAD OFF OF THE STEERING AND RECEIVED INJURIES,,PARTY IN OTHER CAR WAS NOT INJURED. I WAS ALSO DRIVING AT NIGHT ON THE HIGHWAY AND MY LIGHTS WENT OUT, I WAS HIT FROM BEHIND.. BUT ALSO, BECAUSE OF MY HEADLIGHTS AND STEERING THIS HAS BEEN HAPPENING, AIR BAGS, NEVER DEPLOY... RECEIVED SOME SERIOUS INJURIES, BANGED MY KNEW ALSO VERY BADLY.

NHTSA ID 11005342 · filed Jul 14, 2017

Too few reports in this category for a page of its own — they appear in the full complaint list.

Transmission

Reports naming the automatic or manual transmission, including shifting behaviour, shudder, slipping and transmission control modules.

6
reports

From owner reports, verbatim

DT*: THE CONTACT STATED WHILE APPROACHING A STOP UNDER NORMAL BRAKING, THE VEHICLES ENGINE REVS AND SURGES FORWARD. THE BRAKE PEDAL MUST BE DEPRESSED TO THE FLOOR TO STOP THE VEHICLE. THIS HAPPENED 5 TIMES AND THE VEHICLE WAS INSPECTED BY THE DEALER HOWEVER; THE PROBLEM COULD NOT BE DUPLICATED. THE VEHICLE WAS DRIVEN OVER 6,000 MILES WHEN THE PROBLEM RETURNED. IT WAS TAKEN BACK TO THE DEALER FOR SERVICE AND AGAIN THE DEALER WAS UNABLE TO DUPLICATE THE PROBLEM. *AK THE CONSUMER BELIEVED THERE IS A PROBLEM WITH THE TRANSMISSION. UPDATED 04/06/06. *JB

NHTSA ID 10153351 · filed Mar 21, 2006

DT*: THE CONTACT STATED WHILE SHIFTING FROM DRIVE TO PARK THE GEAR LOCKED IN REVERSE AND WHILE DRIVING AT LOW SPEEDS AT NIGHT THE HEADLIGHTS WOULD NOT GO FROM LOW BEAM TO HIGH BEAM. ADDITIONALLY, THE TIRES SLOWLY DEFLATE. THE DEALERSHIP WAS ALERTED. THEY REPAIRED THE GEAR COLUMN, HEADLIGHT SWITCH AND SUGGESTED TO CHECK THE TIRES WEEKLY AND ADD AIR.

NHTSA ID 10153218 · filed Mar 20, 2006

Too few reports in this category for a page of its own — they appear in the full complaint list.

Fuel system

Reports naming fuel storage or delivery — tanks, pumps, lines, injectors and fuel leaks.

6
reports

From owner reports, verbatim

While driving, I came to a stop light and suddenly, the car idled high and lurched forward while my foot was on the brake, luckily, I was stopped well away from the vehicle in front of me. The car idled high and seemed to have a mind of it's own. I took the back roads home and backed into our garage. The car smelled hot, and I though I had smoked my brakes, trying to keep control of it. Later that night, I told my husband about the car's actions and he did not believe me, though my daughter who was with me at the time confirmed that the car had indeed accelerated on it's own. My husband started the car and it did idle high and get hot once again, although only parked with no one in it. He thought he knew what the problem was and we turned off the car and closed the hood and went inside to order the part. A few minutes later, we heard a couple popping noises and I opened the door that led into the garage from the basement. Smoke was coming into the house and my husband said that a flame shot over my head. The car had caught on fire under the closed hood. We called the fire department, but by the time they arrived, a good portion of the basement was on fire. The house was a total loss. My husband though that the pvc elbow under the hood was sticking closed, so that is the part we were going to order. Unsure, if that was the real cause or not. The car did not have any warning lights or any other indications of a problem before this incident.

NHTSA ID 11482417 · filed Sep 1, 2022

I WAS DRIVING AT A SPEED OF 45MPH ON A COUNTY ROAD IN RUSH HOUR TRAFFIC WHEN MY CAR'S ENGINE LIGHT CAME ON SIMULTANEOUSLY AS POWER OF VEHICLE SLOWED WHILE MAKING A RATTLE TYPE NOISE AND CAB SMELLED STRONGLY OF GAS. I ROLLED WINDOWS DOWN PULLED OVER WITHIN A BLOCK TO A NAPA STORE. THE EMPLOYEE TOLD ME THEY DO NOT RUN DIAGNOSTICS AND I WOULD HAVE TO TAKE IT SOMEWHERE. I DROVE SLOWLY TO A 2ND AUTO PARTS STORE 1 MILE AWAY TO RUN DIAGNOSTICS. ONCE DONE, DIAGNOSTICS IDENTIFIED A MISS-FIRE ON SPARK PLUG #2. HAD VEHICLE TOWED TO HOME AND TOOK 'HELI-COIL' OFF AND SPARK PLUG CAME OUT WITH IT DAMAGED. THE HELI COIL WAS ALSO DAMAGED. THE THREADS OF SPARK PLUG WAS FLATTENED THREE THREADS FROM BOTTOM. CONTACTED AUTO PARTS STORE AGAIN WHERE THE TECHNICIAN TOLD ME THAT FORD HAS BEEN HAVING PROBLEMS WITH THERE TRITON SPARK PLUGS BLOWING OUT ON THE 5.4L ENGINES THAT THEY ONLY SCREW IN 3 THREADS INTO THE HEAD OF THE ENGINE AND THERE WERE PENDING LAWSUITS. THE NEXT DAY I CALLED FORD DEALERSHIP AND SPOKE WITH THE ACTING SERVICE MANAGER. "HE TOLD ME THERE WAS NOTHING HE COULD DO ABOUT IT AND I SHOULD CALL CUSTOMER CARE OF FORD: 800-392-3673. I DID AND REP. TOLD ME THERE WAS NO RECALL AND MY VEHICLE AND IT WAS OUT OF WARRANTY AT 101,100.MI. THERE WAS NOTHING THEY COULD DO. IN THE EVENT THERE WERE TO BE A RE-CALL TO SAVE MY RECEIPTS AND FORD WOULD REIMBURSE ME. I READ ABOUT THE PROBLEMS THAT MULTIPLE CUSTOMERS WERE OR HAD HAD REGARDING THE SAME PROBLEM WITH A FEW VEHICLES LEAKING GAS WITH THE PROBLEM. THIS IS ALL HAPPENING WHEN THE CARS, TRUCKS AND SUVS EXCEEDS 100,000MILES. I FEEL THIS IS NOT ONLY POOR MANUFACTURING OF AN INFERIOR ALUMINUM CASING AND SPARK PLUG AND ALSO NOT ENOUGH THREADS TO HOLD THE SPARK PLUG IN SAFELY. TO HAVE IT JUMP OUT ALLOWS GAS TO ALSO BE EXPELLED ONTO THE CARS REMAINING PARTS AND VAPORS COULD IGNITE CAUSING THE CAR TO POTENTIALLY CATCH FIRE.

NHTSA ID 11058590 · filed Jan 4, 2018

Too few reports in this category for a page of its own — they appear in the full complaint list.

Tires & wheels

Reports naming tires, wheels, hubs, or the tire-pressure monitoring system.

5
reports

From owner reports, verbatim

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. CAR HAS BECOME A MONEY PIT AND IT ONLY HAS 77,000 MILES ON IT. *TR

NHTSA ID 10371083 · filed Dec 17, 2010

STEEL BELT SEPARATION IN MICHELIN ENERGY LX4 225/60R16 DOT M33V F2971AB AT 18,761 MILES. I HAVE PICTURES OF THE TIRE FOR YOU AND STILL HAVE THE ACTUAL TIRE IF YOUR INTERESTED. *TR

NHTSA ID 10195934 · filed Jul 10, 2007

Too few reports in this category for a page of its own — they appear in the full complaint list.

Suspension

Reports naming suspension components — springs, struts, shocks, control arms and related hardware.

3
reports

From owner reports, verbatim

"CHECK AIR SUSPENSION" LIGHT CAME ON. VEHICLE BOTTOMED OUT CAUSING VERY POOR HANDLING AND CONTROL. REPAIR SHOWED FAILURE OF AIR COMPRESSOR PUMP, PART NUMBER 8W1Z5319A, A PART COMMON TO FORD MOTOR VEHICLES WITH AIR SUSPENSION. THE REPLACEMENT PUMP HAS A MRP OF $410.00 AND $238.00 LABOR. THE VEHICLE IS ONLY DRIVEN ON PAVED ROADS AND HAS NEVER BEEN DAMAGED BY POOR ROAD CONDITIONS.

NHTSA ID 10437148 · filed Nov 22, 2011

2004 MERCURY MARQUIS REAR SHOCKS WENT BAD. CONSUMER WOULD LIKE REIMBURSEMENT FOR REPAIR WORK DONE. *KB THE CONSUMER NOTICED A SLIGHT BOUNCE COMING FROM THE REAR OF THE VEHICLE. THE CONSUMER WAS INFORMED THE SHOCKS WERE LEAKING OIL. *JB

NHTSA ID 10165820 · filed Aug 9, 2006

Too few reports in this category for a page of its own — they appear in the full complaint list.

Powertrain (other)

Powertrain reports that are not specifically the engine or transmission — driveshafts, axles, transfer cases and differentials.

3
reports

From owner reports, verbatim

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).

NHTSA ID 11428138 · filed Aug 7, 2021

TL* THE CONTACT OWNS A 2004 MERCURY GRAND MARQUIS. THE CONTACT STATED THAT THE VEHICLE WAS TAKEN IN FOR SERVICE AND IT WAS DETERMINED THAT THE UPPER INTERMEDIATE DRIVE SHAFT WAS STARTING TO SEPARATE. THE MANUFACTURER WAS MADE AWARE OF THE FAILURE. THE VEHICLE WAS NOT REPAIRED. THE FAILURE MILEAGE WAS 88,000.

NHTSA ID 10711894 · filed Apr 21, 2015

Too few reports in this category for a page of its own — they appear in the full complaint list.

Other / unspecified

Reports whose component NHTSA recorded as unknown, or that do not map to one of the categories above.

2
reports

From owner reports, verbatim

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. CAR HAS BECOME A MONEY PIT AND IT ONLY HAS 77,000 MILES ON IT. *TR

NHTSA ID 10371083 · filed Dec 17, 2010

THE STEERING WHEEL VIBRATES WHEN DRIVING AT SPEEDS OF 58 MPH AND FASTER. THE DEALERSHIP HAS SERVICED THE VEHICLE 5 TIMES, IN WHICH THEY BALANCED THE TIRES, ROTATE THE TIRES AND MADE AN ADJUSTMENT IN THE STEERING COLUMN. THE PROBLEM STILL EXIST. THE DEALERSHIP ALSO INDICATED THAT THE STEERING WHEEL MEETS FACTORY SPECIFICATIONS AND THE SHAKE IS MINIMUM. *LA THE DEALER ROTATED AND BALANCED THE SYSTEM BUT THE SHAKING PERSISTED. WHEN THE VEHICLE TIRES AND WHEELS WERE REPLACED WITH CAST ALUMINUM THE SHAKING WAS NO LONGER FELT. THE CONSUMER FEELS THAT THE PREVIOUS SET OF TIRES AND WHEELS WERE DEFECTIVE. *NM

NHTSA ID 10083265 · filed Aug 20, 2004

Too few reports in this category for a page of its own — they appear in the full complaint list.

Heating & air conditioning

Reports naming the heating, ventilation and air-conditioning system.

1
report

From owner reports, verbatim

TL* 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 ID 10588525 · filed May 15, 2014

Too few reports in this category for a page of its own — they appear in the full complaint list.

Higher-selling and older vehicles accumulate more reports. Counts are not failure rates and are not directly comparable between vehicles that sold in very different numbers.

Elsewhere on this vehicle

Data sources

Data on this page last refreshed .