Interior Lighting Problems of Mercury Grand Marquis

Mercury Grand Marquis owners have reported 10 interior lighting related problems since 1996. Table 1 shows the 1 most common interior lighting problems. The number one most common problem is related to the vehicle's interior lighting (10 problems). For details of each of the problem category, use the links in the table.

Table 1. Interior Lighting related problems of Mercury Grand Marquis

Problem Category Number of Problems
Interior Lighting problems
Interior Lighting problem #1

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?.

Interior Lighting problem #2

While driving at night, my lights turned off by themselves on a dark rural road. If I hadn't jammed on the brakes, I would have eaten the railing or worse. Turns out the (lcm) lighting control module, is defective. When I looked it up online, it seems that many cars are having this issue, even my local police department. This is a big safety issue and needs to be addressed immediately. The dealer wanted to charge $578 plus 2 hours labor for a part that goes under the dash.

Interior Lighting problem #3

I own a 2000 Grand Marquis that I bought n 05 as of the last past year I cant drive at night cause of the headlights going off while driving I have been ticketed 4 this and have taken it to a dealer only to get no help. After driving 10-15mins they will click and turn off after 1-5mins pop back on. I hope 2 get answer so I want do away with the Ford motor company products.

Interior Lighting problem #4

Tl-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. Sm.

Interior Lighting problem #5

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.

Interior Lighting problem #6

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.

Interior Lighting problem #7

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.

Interior Lighting problem #8

Headlights and interior lights come on after the vehicle was shut off for a long period of time. Consumer was concerned that the battery system will wear down.

Interior Lighting problem #9

Steering is very hard to control, it goes where bumps and dips take you. Car will jump all over the road. Steering has constant pull to left with lots noise. Also steel to steel slamming noise. Steering colum inside car moves. Dealers look make some adjustments,say found no problem. But problems continue. I returned for repeat preformance. Very rough ride front and rear . Electrical problems surfacing, lights flickering,dash,dome headlights etc. , engine cut out as if I turned it off and then came back on each time ihave been sitting still, talk about a dangerous driving situation! again the dealer checks it out finds no problem says they cant always find a problem until it happens and they have the car when the problem occurs. Alot of good thats going to do driving down the highway at 60mph with 5 kids in the car!!! the air conditioning doesn't cool well at first they said no problem the weather got very hot ,they set an appointment. They found low pressure replaced low prssure clutch switch. I took the car in again for poor front end and steering control now adding to the list aloud slamming together of 2 pieces of steel coming from the left front tire area either going over bumps or dips I can't tell which because it happens randomly. The solution, the dealer checks the right side! so the car goes back again .

Interior Lighting problem #10

Instrument panel fuse blew.

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