2004 Mercury Grand Marquis Headlight Problems

Which parts fail

• Headlights
  21
• Turn signal
  1
• Headlights › Switch
  1
• Brake lights
  1
• Lighting control module
  1
• Tail lights
  1

Components named in complaints (headlights, tail lights, turn signals, interior lights).

Mileage when the problem started

• Under 25k
  85%
• 25k–50k
  1710%
• 50k–75k
  3823%
• 75k–100k
  4627%
• 100k–150k
  4124%
• 150k+
  1811%

Owner reports

Selected complaints filed with NHTSA by 2004 Mercury Grand Marquis owners, lightly cleaned up (personal details are redacted by NHTSA).

The contact owns a 2004 Mercury Grand Marquis. The contact stated while driving at an undisclosed speed, the exterior lighting became inoperable. The contact stated that the failure occurred at night which caused him to be on a dangerous dark road. The contact stated that due to the failure and his vision being impaired, the vehicle was driven into a ditch. The contact stated that he received several violation tickets from the local Police. The contact stated that a year ago the vehicle was serviced by the dealer under recall repair for the lighting control module. The contact stated that the failure had occurred twice after the recall repair was completed. The vehicle was not diagnosed or repaired by an independent mechanic or dealer. The manufacturer was not made aware of the failure. The failure mileage was approximately 212,000.

The contact's husband owns a 2004 Mercury Grand Marquis. The contact's husband had received notification of NHTSA 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.

The contact owns a 2004 Mercury Grand Marquis. The contact received NHTSA 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.

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.

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 NHTSA Hotline for assistance. The failure mileage was unknown. The VIN was not available.

The contact owns a 2004 Mercury Grand Marquis. The contact stated that while driving at an undisclosed speed, a local Police Officer stopped the vehicle and made the contact aware that both taillights were inoperable. No warning lights were illuminated. The vehicle was taken to a dealer to be diagnosed; however, the diagnostic result was unknown. The vehicle was serviced under an unknown recall; however, the failure persisted. The manufacturer was not notified of the failure. The failure mileage was unknown.

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.

On December 23, 2015 I was driving my 2004 Mercury Grand Marquis through an intersection in harris county, texas. I had just received a green light and was proceeding to make a left turn when my vehicle was hit by another vehicle in the driver's side front. The damage to my vehicle was severe. The at fault driver's insurance company declared my vehicle a total loss. My vehicle's air bags did not deploy. I was wearing my seat and shoulder belts at the time of the collision. I was examined at a nearby emergency room. They said "no serious injury" but my orthopedic surgeon said I have a separation of my left shoulder.

Tl* the contact owns a 2004 Mercury Grand Marquis. While driving 60 MPH, the headlights failed without warning. As a result, the contact struck the rear passenger side bumper on a guardrail. The contact sustained injuries to the neck and shoulders, which required medical attention. The contact visited her doctor. A police report was not filed. Neither a dealer nor an independent mechanic were contacted. The vehicle was not diagnosed or repaired. The manufacturer was not made aware of the failure. The VIN was included in NHTSA campaign number: 15V860000 (exterior lighting). The approximate failure mileage was 62,000.

On 7-17-13 the lighting control module broke on my car. I repaired my car with the purchased cardone part #73-71002 for $343.14 from autozone. I later received a letter from Ford regarding the csp 14n01. I submitted my receipt to the dealer on 4-28-14 and received reimbursement. On 8-29-14 the part broke again on my car. Autozone/cardone warranty expired 7-17-14. I repaired my car with the purchased cardone part #73-71002 for $343.14 again, this time from oreilys. I called Ford for a reimbursement. They told me it was a one time reimbursement and to contact cardone or NHTSA. In jan 2016, I received a letter from Ford regarding srn 15s39/NHTSA recall 15v-861. At that time we were not experience loss of lights. Now on 3-24-16, I was pulled over at night by the police for no lights, the part broke again. Oreilys/cardone warranty expired 8-29-15. Oreilys did not reimburse me. …

Related recalls

NHTSA investigations

Headlight complaints in other Grand Marquis years