hardly worth mentioning
Crashes / Fires:
0 / 0
Injuries / Deaths:
0 / 0
Average Mileage:
67,167 miles

About These NHTSA Complaints:

This data is from the NHTSA — the US gov't agency tasked with vehicle safety. Complaints are spread across multiple & redundant categories, & are not organized by problem.

So how do you find out what problems are occurring? For this NHTSA complaint data, the only way is to read through the comments below. Any duplicates or errors? It's not us.

2004 Mercury Grand Marquis accessories - interior problems

accessories - interior problem

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2004 Mercury Grand Marquis Owner Comments

problem #6

Dec 312012

Grand Marquis 8-cyl

  • 80,000 miles


The contact owns a 2004 Mercury Grand Marquis. While driving approximately 50 mph, the headlights suddenly failed. The headlights became operable within ten minutes. The malfunction occurred four times. The vehicle was taken to an authorized dealer twice for the same failure. The second time a diagnostic test was performed, the technician stated the computer chip needed to be replaced. The vehicle was repaired. The manufacturer was notified of the defect. The approximate failure mileage was 80,000..... updated 03-28-13 the consumer stated at no time when the lights went off did an indicator on the dash board come on. The dealer advised the lighting control module needed to be replaced. Updated 04/09/2013

- Springfield, VA, USA

problem #5

Jul 282012

Grand Marquis

  • 103,000 miles
My mother-in-law has a 2004 Grand Marquis & last night when she started the car to go home after visiting us, the headlights would not come on at all....additionally, the interior lights have come on all by themselves intermittently, and consequently, the battery is drained each time it happens. The interior problem may or may not fix itself by starting/shutting off/opening/closing door. All I did was type "2004 Mercury Grand Marquis" in yahoo search & a multitude of similar problems came up in the results: All stating a defective light control module (lcm). I am going to take the one out of her car today & take it apart & inspect it for cracked ("cold solder") solder joints as almost anything with a pc board ( (made in the last 25 years especially) tends to develop cracked solder because they are made cheaply by using as little solder possible to hold the joint together (when new, anyways). Yet another cheap, modern junk electronic item pumped out in bulk by the thousands that the manufacturer will not support, unless it fails within the warranty period! I cannot believe Ford Motor Company won't issue a recall for this problem as it is not an isolated problem, according to my research! maybe once someone dies in a car wreck from the lights going out while they're going down a freeway @ 70mph, someone will get a good lawyer and sue the pants off of Ford Motor Company!! class action lawsuit, anybody?

- Elizabethton, TN, USA

problem #4

May 092008

Grand Marquis

  • 150,000 miles
The contact owns a 2004 Mercury Grand Marquis. The contact stated that while driving 30 mph at night, the headlights and the interior lights would suddenly malfunction and stop illuminating, increasing the risk of a crash. The vehicle was taken to an authorized dealer, where a diagnostic test indicated that the head light control module was faulty. The contact did not have the headlight control module replaced. The failure mileage was 150,000.

- Coffeville, AL, USA

problem #3

Oct 092006

Grand Marquis 8-cyl

  • Automatic transmission
  • 70,000 miles


The contact owns a 2004 Mercury Grand Marquis. The contact stated that since 2008, the headlights would turn off intermittently. The lights would turn on once the doors were opened but when the vehicle was started, they would turn off. The dealer inspected the vehicle and stated that the failure was caused by the computer which was replaced. However, the failure occurred again. The failure mileage was approximately 70,000 and the current mileage was approximately 110,000. Updated 02/23/11 the consumer stated the inside lights went out as well. Updated 05/09/11

- Neosho, MO, USA

problem #2

May 282005

Grand Marquis 8-cyl

  • Automatic transmission
  • 0 miles
Toe of left foot hits plastic panel directly to the left of the brake pedal when moving left foot to the brake pedal. Insufficient clearance above left foot due to the plastic panel that covers the courtesy light bulb.

- Davidsonville, MD, USA

problem #1

Apr 042005

Grand Marquis 8-cyl

  • Automatic transmission
  • miles
The interior lights are unable to light up, preventing the consumer from seeing the speed indicator, oil, and fuel gauges. Manufacturer has been notified by consumer.

- Orlando, FL, USA

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