2004 Mercury Grand Marquis Electrical System Problems
NHTSA component category: ELECTRICAL SYSTEM · 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 electrical system ranks on this vehicle
Share of the 347 complaints citing each category; one complaint can cite several. Full breakdown on the 2004 Mercury Grand Marquis overview page.
What owners report
“LIGHTS WENT OUT WHILE DRIVING DOWN A MAJOR HIGHWAY, ONLY BRIGHTS WOULD WORK, THEN THEY WENT OFF. AFTER CLICKING THEM OFF AND ON THEY CAME…”NHTSA complaint 10453176 — filed 03/27/2012
“THE HEADLIGHTS FAILED DURING OPERATION OF THE VEHICLE WHILE IN LIGHT RAIN AT NIGHT IN TOWN. I DID NOT NOTICE THE LIGHTS FAILED, ON COMING…”NHTSA complaint 10438581 — filed 12/05/2011
“LOSS OF HEADLIGHTS WHILE NIGHT DRIVING. THIS HAPPENED ON TWO DIFFERENT OCCASIONS. CORRECTION REQUIRED WAS THE REPLACEMENT OF THE LIGHTING CONTROL MODULE (LCM) ON A…”NHTSA complaint 10390292 — filed 03/15/2011
Excerpts are shortened and scrubbed of personal details; they are individual, unverified reports.
Electrical System complaints by year filed
Frequently asked questions
Does the 2004 Mercury Grand Marquis have electrical system problems?
Electrical System is the #3 most-reported problem area on the 2004 Mercury Grand Marquis: 38 of 347 complaints on file (11%). Complaints are unverified owner reports, not confirmed defects.
How many complaints does the 2004 Mercury Grand Marquis have in total?
347 complaints were on file with NHTSA as of 07/14/2026. Across all categories, 17 involved a crash, 4 involved a fire, 10 reported injuries, and 1 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.
