2004 Mercury Grand Marquis: headlights failing or too dim

Filed Aug 29, 2025 · Lights · 116,000 miles · NJ

The contact owns a 2004 Mercury Grand Marquis. The contact received the federal safety agency Campaign Number: 15V861000 (Exterior Lighting). The contact stated that while driving at night, the headlights were flickering and became inoperable. Occasionally, the headlights operated as designed. There were no warning lights illuminated. The contact called the local dealer and was informed that the parts were not yet available. The vehicle was not diagnosed or repaired. The contact was an independent mechanic and used a module assembly repair kit to repair the vehicle, but the failure reoccurred. The manufacturer was contacted, but no additional assistance was provided. The failure mileage was approximately 116,000.

Filed Jun 26, 2024 · Lights · NC

The contact owns a 2004 Mercury Grand Marquis. The contact stated while driving at an undisclosed speed at night, he became aware that the headlights were not functioning properly. No warning lights were illuminated. The vehicle was not taken to the dealer or an independent mechanic. The vehicle was not repaired. After investigating the failure, the contact related the failure to Customer Satisfaction Program: 14N01. The manufacturer was notified of the failure but referred the contact to the federal safety agency Hotline for assistance. The failure mileage was unknown. The VIN was not available.

Filed Nov 15, 2023 · Lights · TN

My front headlights stopped working and I was driving in the dark.

Filed Sep 1, 2023 · Lights · IA

The headlight repair has been made but now the tail and park lights work intermittently. Most of the time not working but occasionally they will come on in colder weather. I think the problem is still in the Lighting control module. First appearance was last summer and has gotten worse. No other symptoms. Hazard ,turn signals, and brake lights all still work properly. Just no tail or park lights.

Filed Apr 12, 2023 · Lights, Locks · 117,000 miles · FL

The contact's husband owns a 2004 Mercury Grand Marquis. The contact's husband had received notification of the federal safety agency Campaign Number: 15V861000 (Exterior Lighting). The vehicle was taken to a local dealer for the recall repair. The vehicle was repaired; however, the contact was made aware that only the light control module (LCM) module harness was replaced and not the light control module itself. The contact also stated that after the vehicle was returned, the driver's door latch was fractured, and the front passenger’s side headlight failed to illuminate intermittently. The contact made the dealer aware of the failure and was informed that the cost of the repair was her responsibility. The manufacturer was made aware of the failure. The approximate failure mileage was 117,000.

Filed Aug 10, 2022 · Lights · 164,000 miles · IN

The contact owns a 2004 Mercury Grand Marquis. The contact stated that while driving at an undisclosed speed, the headlights and brake lights were inoperable. The vehicle was taken to an independent mechanic who diagnosed that the headlight control module switch needed to be replaced. The vehicle was not repaired. The manufacturer was made aware of the failure. The failure mileage was approximately 164,000.

Filed Aug 7, 2021 · Electrical, Steering · PA

Catalytic converter FAIL, engine idles rough while in park. HIGH Loss of engine power while driving Differentials in back tires are imbalanced…timing FAIL. Steering not calibrated, drivetrain out of sync altogether. Back wheels, left and right; randomly spin & torque hard while car is already in motion on any private road, hidden road, domestic road and high capacity, high speed highway, causing vehicle to fishtail uncontrollably and dangerously, and wildly side to side potentially veering off the road which could result in death unless the driver regains proper control of vehicle. Out of sync car computer and the mechanical devices built into car do not have proper timing performed on those particular moving parts altogether. The car was not manufactured properly mechanically nor electrically altogether. Headlights & electric system etc have an incomplete recall on my vehicle. [XXX] PARTS OF THIS DOCUMENT HAVE BEEN REDACTED TO PROTECT PERSONALLY IDENTIFIABLE INFORMATION PURSUANT TO THE FREEDOM OF INFORMATION ACT (FOIA), 5 U.S.C. 552(B)(6).

Filed Mar 24, 2021 · Lights · 150,000 miles · SC

Tl* the contact owns a 2004 mercury grand marquis. The contact stated that the headlights would independently become inoperable, without warning. The contact stated that there was no warning light illuminated. The vehicle was not taken to the local dealer. The vehicle was not repaired. Upon investigation, the contact associated the failure with the federal safety agency campaign number: 15v861000 (exterior lighting) however, the VIN was not included. The manufacturer was informed of failure and confirmed that the VIN was not included. The failure mileage was approximately 150,000.

Filed Nov 23, 2020 · Electrical, Lights · 130,000 miles · MA

Sometimes the headlights flick on and off while driving. Then when the car is turned off, there is a clicking noise in the driver side dashboard that continues until it drains the battery. Also, sometimes the door locks cycle open or closed whether the car is driving or off. This has happened multiple times and caused me to replace the battery, and still I have to jump the car from time to time. This has happened several times over the past few years, but only now have I found this site to report it to.

Filed Aug 20, 2020 · Lights · 148,000 miles · SC

Head lights started flickering and most of time I had kick at the lightning control module to make it work while in motion on major highway

Filed Feb 13, 2020 · Lights · 147,000 miles · NJ

Tl* the contact owns a 2004 mercury grand marquis. The contact stated that while the vehicle was being driven the front headlamps, rear taillamps, turn signals and dashboard lights became inoperable. The cause of the failure was not determined. The dealer vera chaddy (1240 bloomfield, fairfield nj) and the manufacturer was notified of the failure but no assistance was offered. The failure mileage was 147,000.

Filed Dec 13, 2019 · Lights · 117,000 miles · WI

After receiving recall reminder from ford about safety recall for headlights inoperative I made appointment with dealer providing VIN# to dealer to get lcm ordered to replace it and it was more than $500, and VIN specific. Arrived at appointment and service manager noted ford would not reimburse them to replace lcm, could do a rewire car per their computer instructions and something about diagnostic fees, and I needed to contact ford customer support to get a number authorizing the dealer to replace the lcm as noted as remedy in the federal safety agency 15v861000. Called customer support and heard automated message thru automated call system related to their #15s39 that they would notify when parts are available, this didn't seem contacted customer support online noting issue and they did not provide # needed for that dealer and suggested going to another dealer.