2003 Mercury Grand Marquis Electrical System Problems
NHTSA component category: ELECTRICAL SYSTEM · data through 07/12/2026
Source: U.S. NHTSA complaint data. Complaints are unverified reports from vehicle owners — a complaint is not a confirmed defect.
How electrical system 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
“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
“THE HEAD LIGHTS ON MY MERCURY GRAND MARQUIS GO OUT WHEN I DRIVE AT NIGHT. I HAVE SEARCHED THE WEB FOR SOLUTIONS TO THIS PROBLEM…”NHTSA complaint 10349568 — filed 08/16/2010
Excerpts are shortened and scrubbed of personal details; they are individual, unverified reports.
Electrical System complaints by year filed
Frequently asked questions
Does the 2003 Mercury Grand Marquis have electrical system problems?
Electrical System is the #2 most-reported problem area on the 2003 Mercury Grand Marquis: 46 of 362 complaints on file (12.7%). 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 07/12/2026. Across all categories, 22 involved a crash, 2 involved a fire, 14 reported injuries, and none reported deaths.
What does NHTSA's electrical system category include?
NHTSA assigns each complaint to standard component categories; this page reports the ELECTRICAL SYSTEM category exactly as NHTSA defines and records it.
