There are 15 owner-reported electrical system complaints for the 2000 Mercury Grand Marquisin NHTSA's database. These are unverified consumer reports and may not reflect confirmed defects.
TL* THE CONTACT OWNS A 2000 MERCURY GRAND MARQUIS. WHILE STATIONARY, THE VEHICLE WOULD NOT START WHEN PROMPTED. UPON STARTING THE VEHICLE, A CLICKING NOISE OCCURRED AND THE VEHICLE FAILED TO START. THE VEHICLE WAS TOWED TO AN INDEPENDENT MECHANIC WHERE IT WAS DIAGNOSED THAT THE HEADLAMP MODULE WAS FAULTY AND DRAINED THE BATTERY. THE DEALER WAS NOT CONTACTED. THE MANUFACTURER WAS MADE AWARE OF THE ISSUE AND STATED THAT THERE WAS NO RECALL AND REFERRED THE CONTACT TO NHTSA. THE FAILURE MILEAGE WAS APPROXIMATELY 124,000. UPDATED 11/07/17*LJ UPDATED 11/13/2017*JS
TL* THE CONTACT OWNS A 2000 MERCURY GRAND MARQUIS. WHILE OPERATING THE VEHICLE, A BURNING ODOR WAS PRESENT AND BLACK SMOKE BEGAN TO POUR INTO THE CABIN FROM UNDER THE GLOVE COMPARTMENT. THE VEHICLE WAS EXAMINED BY AN INDEPENDENT MECHANIC WHO INDICATED THAT THE FAILURE WAS DUE TO AN ELECTRICAL ISSUE. NO FURTHER INFORMATION WAS AVAILABLE. THE VEHICLE WAS NOT REPAIRED. THE MANUFACTURER WAS NOTIFIED. THE FAILURE MILEAGE WAS 75,000.
I WAS DRIVING HOME ON A DARK COUNTRY ROAD WITH MY GRANDDAUGHTER IN THE BACK WHO IS 3 1/2. HAD THE HIGH BEAMS ON. LOST HEADLIGHTS, DASH LIGHTS, TAIL AND BRAKE LIGHTS. IF IT WASN'T FOR KNOWING THE ROAD AND NO OTHER VEHICLE WAS AROUND WOULD HAVE CAUSED A BAD WRECK. THERE ARE A LOT OF LAKES AND HILLS AROUND WHERE I DRIVE. HIT THE BREAKS AN CAME TO A STOP FLIPPED THE HEADLIGHT SWITCH A COUPLE OF TIMES AND CHANGED TO DIM LIGHTS AND EVERYTHING CAME BACK ON. THIS HAS HAPPENED BEFORE AND IT IS ONLY WHEN THE HIGH BEAMS ARE ON. IF THIS WOULD OF HAPPENED ON A HIGHWAY OR WITH OTHER VEHICLES AROUND HATE TO THINK OF WHAT WOULD HAPPEN. FORD SAYS THERE IS NO RECALL ON THIS PROBLEM. IT HAS HAPPENED A FEW TIMES BUT WITH THE PART BEING OVER 600.00 AND THEN PAYING SOMEONE TO PUT IT IN. I CAN'T AFFORD TO DO ANYTHING. *TR
T* THE CONTACT OWNS A 2000 MERCURY GRAND MARQUIS. WHILE DRIVING APPROXIMATELY 45 MPH WITH THE HIGH BEAM HEADLIGHTS ACTIVATED, THE INSTRUMENT PANEL INDICATORS, HEADLIGHTS, AND BRAKE LIGHTS FLASHED CONTINUOUSLY. THE VEHICLE WAS NOT REPAIRED AND THE MANUFACTURER WAS NOT NOTIFIED. THE APPROXIMATE FAILURE MILEAGE WAS UNKNOWN.
VEHICLE WAS BEING DRIVEN ON A MARYLAND SECONDARY ROAD AND THE ENTIRE LIGHTING SYSTEM FAILED. THE CAR CONTINUED TO OPERATE BUT WITH NO HEADLIGHTS, RUNNING LIGHTS OR INTERIOR LIGHTS. BASICALLY IT FORCED US TO FIND A QUICK SAFE PULL OFF USING A FLASHLIGHT FOR VISION. TOMORROW THE CAR IS RECEIVING A COMPLETE DIAGNOSTIC CHECK TO DETERMINE THE FAULT. IT SEEMS THE LIGHTING CONTROLS SEEM TO BE A PROBLEM AS THE BATTERY AND ALTERNATOR CHECKED OUT FINE. THIS IS A MAJOR LIFE SAFETY FINDING AND NEEDS TO BE ADDRESSED BY FORD NOW WITH THE NUMBER OF THESE VEHICLES ON THE ROAD. *TR
I OWN A 2000 GRAND MARQUIS THAT I BOUGHT N 05 AS OF THE LAST PAST YEAR I CANT DRIVE AT NIGHT CAUSE OF THE HEADLIGHTS GOING OFF WHILE DRIVING I HAVE BEEN TICKETED 4 THIS AND HAVE TAKEN IT TO A DEALER ONLY TO GET NO HELP. AFTER DRIVING 10-15MINS THEY WILL CLICK AND TURN OFF AFTER 1-5MINS POP BACK ON. I HOPE 2 GET ANSWER SO I WANT DO AWAY WITH THE FORD MOTOR COMPANY PRODUCTS. *TR
TL*THE CONTACT OWNS A 2000 MERCURY GRAND MARQUIS. WHILE DRIVING 25 MPH, THE CONTACT NOTICED SMOKE, A POIGNANT ODOR, AND SMALL FLAMES SEEPING FROM THE DASHBOARD. HE PULLED OVER, EXITED THE VEHICLE, AND CALLED 911. HE TAMED THE FIRE WITH A FIRE EXTINGUISHER. THE POLICE AND FIRE DEPARTMENTS ARRIVED AND DISCONNECTED THE BATTERY. A POLICE REPORT WAS FILED. THE CONTACT DID NOT NOTIFY A DEALER AND NO REPAIRS WERE MADE. THE CURRENT AND FAILURE MILEAGES WERE 81,210. UPDATED 12-12-07 *BF A COPY OF THE POLICE REPORT WAS PROVIDED. UPDATED 12/12/07 *TR
2000 GRAND MARQUIS EXPERIENCING PROBLEMS WITH THE HEADLIGHTS, INTERIOR LIGHTS AND DASHBOARD LIGHTS.***NO ANSWER REQUIRED***. *MR THE CONSUMER TOOK THE VEHICLE TO THE DEALER BUT THEY WERE UNABLE TO FIND ANY PROBLEMS. TWO MONTHS LATER WHILE DRIVING, THE HEADLIGHTS AND DASH LIGHTS WENT OUT. AFTER ABOUT 15 SECONDS THE LIGHTS CAME BACK ON. *JB
THE INTERIOR LIGHTS COME ON WHEN THERE IS NO ONE IN THE VEHICLE AND NO KEY IS IN THE IGNITION. NO OTHER LIGHTS COME ON. *JB
DT: THE CONTACT HAD TO REPLACE FUSES APPROXIMATELY EVERY THREE TO FOUR DAYS. THE DEALER SAID IT MAY BE THE CLOCK SPRING, BUT THEY WOULD HAVE TO PERFORM A DIAGNOSTIC TEST TO CONFIRM THE PROBLEM. THE DIAGNOSTIC TEST HAS NOT BEEN PERFORMED. THE CONTACT REPORTED THAT THE CONDENSER WENT OUT AT APPROXIMATELY 40,000 MILES. *AK
2000 MERCURY GRAND MARQUIS LS VIN [XXX]. WHILE DRIVING AT 55 MPH THE CAR STALLED AND COULDN'T BE STARTED UNTIL PULLED OVER TO THE SIDE OF THE ROAD. WHEN TOWED AND REPAIRED AT THE MERCURY GARAGE, THE ONLY CAUSE WAS A DEFECTIVE #8 CYLINDER COIL/PLUG ASSEMBLY. I BELIEVE THIS IS A VERY DANGEROUS CONDITION. I FOUND OUT LATER THAT FORD HAS A SERVICE BULLETIN OUT FOR COIL/PLUG FAILURES. A COUPLE OF WEEKS BEFORE THIS THE #7 COIL/PLUG ASSEMBLY SHORTED OUT BUT IT DID NOT CAUSE THE CAR TO SHUT DOWN. I BELIEVE FORD SHOULD RECALL 2000 MERCURYS AND REPLACE ALL 8 OF THE COIL/PLUG ASSEMBLIES. I BOUGHT THE CAR NEW. IT WAS MY 3RD GRAND MARQUIS AND MY LAST. I TRADED THE CAR AS A RESULT OF THE #8 COIL/PLUG FAILURE . YOU MAY GIVE FORD THIS INFORMATION. INFORMATION REDACTED PURSUANT TO THE FREEDOM OF INFORMATION ACT (FOIA), 5 U.S.C. 552(B)(6). *TR
CONSUMER STATES THE LIGHTS ON THE INSIDE OF VEHICLE ILLUMINATED AND WOULD NOT GO OFF TILL HOURS LATER. ONE MONTH AGO THE HEADLIGHTS WENT OUT FOR A SECOND AND CAME BACK ON. ONE MONTH LATER CONSUMER WOKE UP AND HEADLIGHTS AND DASH LIGHT ON AND NO ONE HAD BEEN IN CAR. PLEASE PROVIDE ANY FURTHTER INFORMATION. NLM
MY IGNITION KEY WOULD NOT COME OUT OF THE IGNITION SWITCH WITH THE ENGINE OFF AND THE LEVER IN THE PARK POSITION. IT TOOK ME THE BETTER PART OF 10 MINUTES OF ROCKING THE STEERING WHEEL BACK ANFD FORTH BEFORE I COULD GET THE KEY OUT. ALSO, ONE I GOT THE KEY OUT AND STARTED THE ENGINE, AND THEN SHUT IT DOWN. AT THIS TIME THE KEY CAME OUT WHEN I PUT THE LEVER IN PARK, BUT THE STEERING WHEEL WOULD NOT LOCK. *AK
CONSUMER 2000 MERCURY MARQUIS LS SHIFTS GEARS ON ITS OWN AT 45 65 MPH AND THEN THE TRAC CONTROL LIGHT COMES ON. *TS WHEN THE TRAC LIGHT CAME ON, THE VEHICLE COMPLETELY SHUT DOWN, AS IF THE CONSUMER HAD USED THE KEY TO TURN OFF THE IGNITION. AFTER SEVERAL VISITS TO DIFFERENT DEALERS, NO ON HAS BEEN ABLE TO FIND THE PROBLEM. *JB
UNDER WET CONDITIONS HORN WILL ACTIVATE BY ITSELF.WITHOUT APPLYING PRESSURE ON HORN, HORN WILL SOUND FOR ABOUT 1-30 SECONDS. WHEN IT STOPS, INSIDE AND OUTSIDE LIGHT WILL TURN OFF FOR ABOUT 2 SECONDS. VEHICLE WAS AT THE DEALER 4 TIMES, BUT COULD NOT DETERMINE CAUSE.*AK
Complaints are unverified consumer reports submitted to NHTSA. A high complaint count may reflect vehicle popularity, not defect severity. Data sourced from NHTSA public records.
Data synced from NHTSA on Apr 26, 2026