2003 Mercury Grand Marquis Exterior Lighting Problems
NHTSA component category: EXTERIOR LIGHTING · data through 07/14/2026
Source: U.S. NHTSA complaint data. Complaints are unverified reports from vehicle owners — a complaint is not a confirmed defect.
How exterior lighting ranks on this vehicle
Share of the 362 complaints citing each category; one complaint can cite several. Full breakdown on the 2003 Mercury Grand Marquis overview page.
What owners report
“I HAVE TWO COMPLAINTS, MY FIRST COMPLAINT IS, I OWN A 2003 GRAND MARQUIS. I HAVE TO BE TO WORK @ 3 IN THE MORNING…”NHTSA complaint 10356894 — filed 09/21/2010
“2003 MERCURY GRAND MARQUIS HEADLIGHT FAIL. EVERY OTHER THING IS WORKING. NOW THIS IS SERIOUS BECAUSE IT HAPPENS EVERY 5 MINUTES AND REMAINS FOR AT…”NHTSA complaint 10353784 — filed 09/03/2010
“THE HEADLIGHTS GO OUT ON MY 2003 MERCURY MARQUIS WHILE DRIVING, THEY WILL GO ON AGAIN IF I SHUT DOWN THE CAR AND LET IT…”NHTSA complaint 10350248 — filed 08/18/2010
Excerpts are shortened and scrubbed of personal details; they are individual, unverified reports.
Exterior Lighting complaints by year filed
Frequently asked questions
Does the 2003 Mercury Grand Marquis have exterior lighting problems?
Exterior Lighting is the most-reported problem area on the 2003 Mercury Grand Marquis: 188 of 362 complaints on file (51.9%). Complaints are unverified owner reports, not confirmed defects.
How many complaints does the 2003 Mercury Grand Marquis have in total?
362 complaints were on file with NHTSA as of 07/14/2026. Across all categories, 22 involved a crash, 2 involved a fire, 14 reported injuries, and none reported deaths.
What does NHTSA's exterior lighting category include?
NHTSA assigns each complaint to standard component categories; this page reports the EXTERIOR LIGHTING category exactly as NHTSA defines and records it.
