There are 5 owner-reported lighting complaints for the 2007 Mercury Grand Marquisin NHTSA's database. These are unverified consumer reports and may not reflect confirmed defects.
The instrument lights/gauges work intermittently. The digital odometer won't display.
TL* THE CONTACT OWNS A 2007 MERCURY GRAND MARQUIS. WHILE DRIVING APPROXIMATELY 50 MPH AT NIGHT, THE HEADLIGHTS TURNED OFF WITHOUT WARNING. THE CONTACT UTILIZED THE HIGH BEAM HEADLIGHTS. THE CONTACT TOOK THE VEHICLE TO MOFFITT'S FORD LINCOLN (515-432-6336, LOCATED AT 1819 SE MARSHALL ST, BOONE, IA 50036) WHERE IT WAS DIAGNOSED THAT THE LIGHTING SYSTEM NEEDED TO BE REPLACED. THE PART WAS ORDERED. THE MANUFACTURER WAS MADE AWARE OF THE FAILURE AND REFERRED THE CONTACT TO NHTSA. THE VEHICLE WAS NOT REPAIRED. THE FAILURE MILEAGE WAS APPROXIMATELY 116,699.
TL* THE CONTACT OWNS A 2007 MERCURY GRAND MARQUIS. WHILE OPERATING THE VEHICLE, THE HEADLIGHTS SUDDENLY SHUT OFF. THE VEHICLE WAS TAKEN TO AN INDEPENDENT MECHANIC WHO DIAGNOSED THAT THE HEADLIGHT MODULE WAS FAULTY AND NEEDED TO BE REPLACED. THE VEHICLE WAS NOT REPAIRED. AN UNKNOWN DEALER AND THE MANUFACTURER WERE NOTIFIED OF THE FAILURE, BUT NO ASSISTANCE WAS OFFERED. THE CONTACT INDICATED THAT THE VEHICLE WAS PREVIOUSLY REPAIRED FOR THE SAME FAILURE, BUT THE FAILURE RECURRED. THE VIN WAS NOT AVAILABLE. THE FAILURE MILEAGE WAS 230,000.
TL* THE CONTACT OWNS A 2007 MERCURY GRAND MARQUIS. WHILE DRIVING AT VARIOUS SPEEDS, THE HEADLIGHTS TURNED OFF INTERMITTENTLY WITHOUT WARNING. THE VEHICLE WAS TAKEN TO AN INDEPENDENT MECHANIC. THE TECHNICIAN DIAGNOSED THAT THE LIGHTING CONTROL MODULE NEEDED TO BE REPLACED. THE MANUFACTURER WAS MADE AWARE OF THE FAILURE. THE VEHICLE WAS NOT REPAIRED. THE FAILURE MILEAGE WAS 106,000.
TL* THE CONTACT OWNS A 2007 MERCURY GRAND MARQUIS LS. THE CONTACT STATED THAT WHILE DRIVING AT VARIOUS SPEEDS, THE HEADLIGHTS TURNED OFF INTERMITTENTLY DURING THE NIGHT AND ON DURING THE DAY. THE CONTACT ALSO MENTIONED THAT WHEN THE HIGH BEAMS WERE TURNED ON, ALL OF THE LIGHTS WOULD TURN OFF. THE VEHICLE WAS TAKEN TO AN INDEPENDENT MECHANIC, WHO STATED THAT THE LIGHTING CONTROL MODULE WOULD NEED TO BE REPLACED. THE MANUFACTURER WAS NOTIFIED. THE APPROXIMATE FAILURE MILEAGE WAS 60,000. THE CURRENT MILEAGE WAS 52,000. ...UPDATED 11-18-13 *BF
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