2003 Mercury Grand Marquis Interior lighting Problems
- Complaints
- 1about this part
- Share
- 0%of 362 total for the year
- Median mileage
- 265,000miles
- Trend
- Not enough dataFewer than 15 complaints, too few for a reliable trend.
NHTSA recorded 1 complaints about the interior lighting of the 2003 Mercury Grand Marquis, 0% of the 362 complaints for this model year. Where a mileage was given, the median is 265,000 miles.
Fewer than 15 complaints name this part, so treat the figures as a rough indication only.
Example complaints
Selected from NHTSA records; personal details are removed. They are consumer reports, not findings.
“The contact owns a 2003 Mercury Grand Marquis. While driving 45 MPH, the headlights, turn signal, instrument panel, and interior lighting failed without warning. The vehicle was taken to a dealer where it was diagnosed that the lighting control module needed to be replaced. The vehicle was not repaired. The manufacturer was notified of the failure. The failure mileage was 265,000.”
NHTSA complaint #10780086, filed 2015-10, 265,000 milesInterior lighting: other model years
Other parts of the 2003 Mercury Grand Marquis
207 complaintsElectrical system
51 complaintsSteering
28 complaintsSuspension
28 complaintsVehicle speed control
27 complaintsEngine cooling
13 complaintsTransmission and drivetrain
12 complaintsAir bags
11 complaintsFuel system
10 complaintsVisibility (wipers, defrost, mirrors)
10 complaintsWheels
10 complaintsBody and structure
9 complaints
← All problems reported for the 2003 Mercury Grand Marquis
About this data. Data from NHTSA (ODI) complaints, recalls, TSBs and investigations, updated Nov 1, 2026. Complaints are unverified consumer reports and may be duplicated or inaccurate.
To check a specific vehicle for open recalls, use its VIN at nhtsa.gov/recalls. Methodology