Problems owners report
Complaints filed with NHTSA about the 1998 Mercury Grand Marquis, by the system named in each complaint. One complaint can name several.
- Engine and engine cooling26
- Steering17
- Suspension16
- Exterior lighting16
- Electrical system15
- Structure10
- Vehicle speed control9
- Power train8
- Tires7
- Fuel system, gasoline7
NHTSA ODI complaints (public domain) · updated 23 Oct 2026 · 5 injuries and 1 deaths reported
Compared with other years
NHTSA ODI complaints by model year
Fatal crashes in the US
From 2020 to 2023, 19 1998 Grand Marquis vehicles were involved in crashes on US public roads in which someone died; 15 people died inside them, and 1 of the vehicles rolled over. This is a count, not a crash rate: it grows with the number of cars on the road.
NHTSA Fatality Analysis Reporting System (FARS), crash years 2020–2023 (public domain)
New York safety inspections
At its first New York inspection the 1998 Mercury Grand Marquis failed the safety check 1.36% of the time — 21% less often than the average 1998 passenger car (1.71%). Median odometer at inspection: 113,957 miles.
NY DMV Vehicle Inspections (vezn-fmmk), initial inspections since Aug 2021 · how we count
Recalls in Canada
3 Transport Canada recalls for the 1998 Mercury Grand Marquis.
| 2008038 6 Feb 2008 | Electrical On certain vehicles, a wiring harness that is not compatible with the vehicle circuit polarity may have been inadvertently installed during servicing for recall… |
| 2007258 7 Aug 2007 | Electrical On certain vehicles, the speed control deactivation switch may overheat, smoke, or burn, potentially resulting in an underhood fire. The failure mode appears t… |
| 2000158 24 Jul 2000 | Other Certain vehicle have jacking instructions which, if followed, may cause the operator to place the jack on a frame weld when attempting to raise a rear wheel. I… |
Transport Canada Vehicle Recalls Database · Contains information licensed under the Open Government Licence – Canada
Recalls
FORD IS RECALLING 225,000 MY 1992-2003 ECONOLINE, MY 1993-1995 TAURUS SHO, MY 1992-1998 CROWN VICTORIA, MY 1993 BRONCO, F-SERIES, MY 1995-1997 F-SERIES SUPER DUTY STRIPPED CHASSIS, MY 1992-1998 MERCURY GRAND MARQUIS, AND MY 1992-1995 LINCOLN TOWN CAR VEHICLES. THE AFFECTED VEHICLES WERE PREVIOUSLY REPAIRED USING A WIRING HARNESS THAT IS NOT COMPATIBLE WITH THE VEHICLE CIRCUIT POLARITY.
ON CERTAIN PICKUP TRUCKS, PASSENGER VEHICLES, SPORT UTILITY VEHICLES, AND MOTOR HOMES CHASSIS, THE SPEED CONTROL DEACTIVATION SWITCH MAY, UNDER CERTAIN CONDITIONS, LEAK INTERNALLY AND THEN OVERHEAT, SMOKE, OR BURN.
VEHICLE DESCRIPTION: PASSENGER VEHICLES. THESE VEHICLES HAVE JACKING INSTRUCTIONS WHICH, IF FOLLOWED, COULD CAUSE THE VEHICLE OPERATOR TO PLACE THE JACK ON A FRAME WELD WHEN ATTEMPTING TO RAISE A REAR WHEEL. IF THE VEHICLE IS JACKED UP WITH THE JACK PLACED ON THE FRAME WELD AND IF THE VEHICLE IS FREE TO ROLL (WHEELS NOT BLOCKED OR CHOCKED), THE JACK COULD YIELD AND THE VEHICLE MAY DROP SUDDENLY.
VEHICLE DESCRIPTION: PASSENGER VEHICLES USING AFTERMARKET FRONT PASSENGER SIDE SEAT BELT ASSEMBLIES THAT WERE SOLD BY FORD PARTS DEPARTMENTS FROM JANUARY 1, THROUGH JUNE 13, 2000. THESE SEAT BELT ASSEMBLIES FAIL TO COMPLY WITH THE REQUIREMENTS OF FMVSS NO. 209, "SEAT BELT ASSEMBLIES." THE EQUIPMENT INVOLVED IS SERVICE STOCK SEAT BELT ASSEMBLIES, MODEL NOS. H 9977, H 9979, T 9063, AND T 9217, BUILT BY TRW VEHICLE SAFETY SYSTEMS, INC. (TRW) MANUFACTURED FROM JUNE 1, 1998 THROUGH MAY 21, 2000. SOME OF THESE SEAT BELT ASSEMBLIES MAY HAVE BEEN INSTALLED AS SERVICE REPLACEMENT EQUIPMENT ON THE VEHICLES INVOLVED IN THE RECALL.
VEHICLE DESCRIPTION: PASSENGER VEHICLES USING AFTERMARKET DRIVER'S SEAT BELT ASSEMBLIES THAT WERE SOLD BY FORD PARTS DEPARTMENTS FROM JANUARY 1, THROUGH JUNE 13, 2000. THESE SEAT BELT ASSEMBLIES FAIL TO COMPLY WITH THE REQUIREMENTS OF FMVSS NO. 209, "SEAT BELT ASSEMBLIES." THE EQUIPMENT INVOLVED IS SERVICE STOCK SEAT BELT ASSEMBLIES, MODEL NOS. H 9977, H 9979, T 9063, AND T 9217, BUILT BY TRW VEHICLE SAFETY SYSTEMS, INC. (TRW) MANUFACTURED FROM JUNE 1, 1998 THROUGH MAY 21, 2000. SOME OF THESE SEAT BELT ASSEMBLIES MAY HAVE BEEN INSTALLED AS SERVICE REPLACEMENT EQUIPMENT ON THE VEHICLES INVOLVED IN THE RECALL.
Whether a recall was fixed on a particular car is known only to the manufacturer: check the VIN at nhtsa.gov/recalls.
NHTSA recalls · summaries in NHTSA's own words
Service bulletins
What Mercury told its dealers about the 1998 Mercury Grand Marquis: known faults, fixes and updates.
| Bulletin | Summary |
|---|---|
| 637533 | SOME VEHICLES EQUIPPED WITH A ONE-TOUCH DOWN MODULE OR A DRIVERS DOOR MOUDLE MAY EXHIBIT A CONDITION WHERE THE DRIVERS WINDOW MOVES DOWN WHEN ONE OF THE OTHER WINDOWS IS OPERATED. *TT |
| 636099 | SOME VEHICLES PRODUCED BEFORE 3/5/2002 MAY EXHIBIT AN INTERMITTENT RAPID FLASHING OF THE TURN SIGNALS. *TT |
| 636080 | TRANSFER SERVICE TIPS FOR THE FRONT WIPER MOTOR MOUNT BRACKET AND DEPRESSED PARK OUTPUT ARM. *TT |
| 636065 | INFORMATION REGARDING DISCHARGED BATTERY CHARGING SERVICE TIPS AND GUIDELINES. *TT |
| 635994 | ON SOME VEHICLES, THE BRAKE SHIFT INTERLOCK MAY BE INOPERATIVE, NOW ALLOWING THE OPERATOR TO MOVE THE SHIFT LEVER FROM THE PARK POSITION. STOP LAMP OPERATION MAY ALSO BE AFFECTED. *TT |
| 630628 | SOME VEHICLES MAY EXHIBIT AN INTAKE MANIFOLD CROSSOVER (FIRST RUNNER) COOLANT SEEPAGE CONDITION. *TT |
| 630515 | ENGINE OIL SYSTEM PRIMING PROCEDURES, SERVICE TIPS FOR REPORTS OF PREMATURE ENGINE FAILURE. *TT |
| 630349 | SOME VEHICLES WITH 4R700 TRANSMISSIONS BUILT FROM 4/16/98 THROUGH THE END OF THE 1998 MODEL YEAR MAY EXHIBIT A LEAK FROM THE VENT AREA OF THE TRANSMISSION. *TT |
| 630001 | SOME ENGINE ASSEMBLIES WITH ALUMINUM CYLINDER HEADS REPAIRED IN-VEHILE HAVE BEEN FOUND TO LEAK COOLANT AND/OR OIL FROM THE CYLINDER HEAD GASKET AREA. *TT |
| 627927 | SOME VEHICLES MAY EXHIBIT VACUUM OR AIR LEAKS IN THE INTAKE MANIFOLD AND / OR ENGINE SYSTEM CAUSING DIAGNOSTIC TROUBLE CODES P0171 AND OR P0174. *TT |
| 627791 | PARTS AND PROCEDURE TO REDUCE THE POTENTIAL OF FUEL TANK PUNCTURES DURING RARE AND EXTREMELY HIGH-SPEED REAR IMPACTS. *TT |
| 627774 | SOME IGNITION SWITCH LOCK CYLINDER ASSEMBLIES MAY EXHIBIT ROUGNESS AND / OR EXCESS EFFORT IN TURNING, KEY DOES NOT FULLY RETURN FROM START, A MALFUNCTION INDICATOR LAMP MAY ILLUMINATE WITH P0500, P1502 AND U1039 STORED IN POWERTRIAN CONTROL MODULE (PCM). *TT |
| 627768 | SOME VEHICLES EQUIPPED WITH THE ROMEO BUILT 4.6L 2V ENGINE MAY EXHIBIT AN ENGINE OIL LEAK OR OIL WEEPAGE FROM THE CYLINDER HEAD GASKET AT THE RIGHT HAND REAR OR THE LEFT HAND FRONT OF THE ENGINE. *TT |
| 627758 | VEHICLES MAY EXHIBIT AN INTERMITTENT RAPID FLASHING OF THE TURN SIGNALS. *TT |
| 625715 | BRAKE SHIFT INTERLOCK.*JB |
| 624571 | SOME VEHICLES MAY EXHIBIT A FEAD BELT JUMP-OFF TOSS. *YH |
| 623988 | INFORMATION REGARDING TRANSMISSION FLUID USAGE CHARTS. *SLC |
| 623944 | SOME VEHICLES MAY EXHIBIT HEATER CORE LEAKS. *SLC |
| 622846 | SOME VEHICLES MAY EXHIBIT A STALL AT IDLE AFTER START-UP CONDITION. *TT |
| 621061 | SOME VEHICLES BUILT 04/15/2000 OR EARLIER EQUIPPED WITH A KEYLESS ENTRY SYSTEM MAY EXHIBIT AN INOPERATIVE DOOR-MOUNTED KEYPAD, INTERIOR AND EXTERIOR LAMPS THAT SELF-ACTIVATE AND A WEAK OR DISCHARGED VEHICLE BATTERY. *TT |
| 620304 | VEHICLES BUILT UP TO DECEMBER OF 1999 MAY EXHIBIT A CLUNK NOISE FROM THE REAR OF THE VEHICLE WHEN DRIVING OVER SPEED BUMPS. THIS MAY BE CAUSED BY THE FILL-LIMITING VALVE INSIDE THE FUEL TANK. *TT |
| 619424 | SUBJECT REGARDING ENGINE OIL RECOMMENDATIONS FOR USE IN 2001 VEHICLES - SAE 5W-20 MOTOR OIL. *TT |
| 619335 | SUBJECT REGARDING CERTAIN VEHICLES WITH 4.6L ROMEO ENGINES EXHIBITING AN OIL LEAK FROM THE CYLINDER HEAD GASKET AREA. *TT |
| 619315 | SOME VEHICLES EQUIPPED WITH 4.6L ROMEO ENGINE MAY EXHIBIT AN OIL LEAK FROM THE CYLINDER HEAD GASKET AREA. *TT |
| 619299 | INFORMATION ON REPLACING FUEL TANK STRAP BOLTS. *TT |
NHTSA manufacturer communications (public domain)
NHTSA investigations
SPARK PLUG EJECTION FROM CYLINDER HEAD
FUEL-FED FIRES
POST REAR END COLLISION FIRES
NHTSA Office of Defects Investigation