Built from official NHTSA complaint and recall data · data through 07/12/2026
High complaint levelIts most-reported problem — Exterior Lighting — runs 9.7× the fleet median for that category across the 720 model-years tracked on this site.
347Complaints
2Recalls
17Crashes
4Fires
10Injured
1Deaths
Source: U.S. NHTSA complaint & recall data. Complaints are unverified reports from vehicle owners — a complaint is not a confirmed defect.
Is this problem acknowledged?
The most-reported problem — Exterior Lighting (53.3% of complaints) — is covered by 1 NHTSA recall campaign.
Exterior Lighting complaints here are 9.7× the median for that category across the 720 model-years tracked on this site.
Complaint category
Reports
Official status
Reference
Exterior Lighting
185 · 53.3%
Recalled
Recall 15V861000
Steering
62 · 17.9%
not available
—
Electrical System
38 · 11%
not available
—
Exterior Lighting:headlights
21 · 6.1%
Recalled
Recall 15V861000
Vehicle Speed Control
17 · 4.9%
not available
—
Interior Lighting
6 · 1.7%
not available
—
Recalled = an NHTSA safety recall covers this category, so a free repair exists. Under investigation = NHTSA has an open probe but no recall yet. Investigation closed = NHTSA examined it and closed the probe — this is not a defect finding; where a closed probe led to a recall we name the campaign. Not available = recall or investigation data could not be confirmed for this vehicle — it is not a “no”. Categories are matched by NHTSA's top-level component. Check your VIN at nhtsa.gov/recalls.
ENGINE AND ENGINE COOLING:EXHAUST SYSTEM:MANIFOLD/HEADER/MUFFLER/TAIL PIPE4 · 1.2%
Percentages are the share of the 347 complaints citing each component; one complaint can cite several components. “Unspecified / other” is NHTSA’s own catch-all category — we show it rather than hide it.
FAILURE OF THIS CONNECTION COULD LEAD TO FUEL SPILLAGE AND, IN THE PRESENCE OF AN IGNITION SOURCE, A FIRE COULD OCCUR. Recall repairs are free at authorized dealers.
PARK-IT: NO · PARK-OUTSIDE: NO · OVER-THE-AIR FIX: NO
Park itPark outside Specimen badges — shown on a recall card only when NHTSA sets the flag. None of the campaigns above carries either flag. Always check your own vehicle by VIN at nhtsa.gov/recalls.
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 · EXTERIOR LIGHTING
“BOTH HEADLIGHTS WENT OUT AT NIGHT WITHOUT WARNING, DANGEROUS CONDITION. THE DEALER REPLACED THE LIGHTING CONTROL MODULE WHICH HAD FAILED #4W7Z13C788.”NHTSA complaint 10445649 — filed 01/27/2012 · EXTERIOR LIGHTING
“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 · EXTERIOR LIGHTING
Excerpts are shortened and scrubbed of personal details; they are individual, unverified reports.
Complaint trend by year filed
Frequently asked questions
What are the most common problems with the 2004 Mercury Grand Marquis?
Exterior lighting issues are the most-reported category, cited in 185 of 347 NHTSA complaints (53.3%), followed by steering (62), electrical system (38), exterior lighting:headlights (21). Complaints are unverified owner reports.
How many complaints does the 2004 Mercury Grand Marquis have?
347 complaints were on file with NHTSA as of 07/12/2026. Of those, 17 involved a crash, 4 involved a fire, and 10 reported injuries. 1 deaths were reported.
Does the 2004 Mercury Grand Marquis have any recalls?
Yes — 2 NHTSA safety recall campaigns, including campaign 15V861000. Recall repairs are free at authorized dealers. Check your specific vehicle by VIN at nhtsa.gov/recalls.
Has NHTSA acted on the 2004 Mercury Grand Marquis's reported problems?
Recall or investigation data is partly unavailable for this vehicle right now — check your VIN at nhtsa.gov/recalls for the authoritative answer.
Is a complaint proof of a defect?
No. Complaints are reports submitted by consumers to NHTSA. NHTSA does not verify individual complaints, and a complaint is not proof that a defect exists.
About this data — Complaint figures on this page are consumer reports submitted to the National Highway Traffic Safety Administration (NHTSA), a U.S. government agency. NHTSA does not verify individual complaints; a complaint is not proof that a defect exists, and counts reflect what owners chose to report, not confirmed failure rates. Recall information comes from official NHTSA safety recall campaigns; recall repairs are free at authorized dealers. Always check your specific vehicle by VIN at nhtsa.gov/recalls. CarModelProblems.com is an independent site and is not affiliated with NHTSA or any vehicle manufacturer. Data through 07/12/2026.
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