2004 Mercury Grand Marquis Exterior Lighting:headlights Problems
NHTSA component category: EXTERIOR LIGHTING:HEADLIGHTS · 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 exterior lighting:headlights 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
“THE CONTACT OWNS A 2004 MERCURY GRAND MARQUIS. THE CONTACT STATED THAT WHILE DRIVING APPROXIMATELY 5 MPH, THE HEADLIGHTS STOPPED ILLUMINATING. THE CONTACT HAD TO…”NHTSA complaint 10444849 — filed 01/23/2012
“2004 MERCURY GRAND MARQUIS. CONSUMER WRITES IN REGARDS TO FAILURE OF HEADLIGHTS *TGW THE CONSUMER STATED THE HEADLIGHTS WOULD JUST RANDOMLY GO OUT AND COME…”NHTSA complaint 10440693 — filed 12/15/2011
“THE CONTACT OWNS A 2004 MERCURY GRAND MARQUIS. WHILE TRAVELING 50 MPH THE CONTACT NOTICED THAT THE HEADLIGHTS HAD SUDDENLY SHUT OFF WITHOUT WARNING. THE…”NHTSA complaint 10354650 — filed 09/09/2010
Excerpts are shortened and scrubbed of personal details; they are individual, unverified reports.
Exterior Lighting:headlights complaints by year filed
Frequently asked questions
Does the 2004 Mercury Grand Marquis have exterior lighting:headlights problems?
Exterior Lighting:headlights is the #4 most-reported problem area on the 2004 Mercury Grand Marquis: 21 of 347 complaints on file (6.1%). 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 07/12/2026. Across all categories, 17 involved a crash, 4 involved a fire, 10 reported injuries, and 1 reported deaths.
What does NHTSA's exterior lighting:headlights category include?
NHTSA assigns each complaint to standard component categories; this page reports the EXTERIOR LIGHTING:HEADLIGHTS category exactly as NHTSA defines and records it.
