Tl* the contact owns a 1998 mercury grand marquis. While driving various speeds, the headlights and instrument panel lighting failed to illuminate. The contact stated that the failure occurred periodically. The vehicle was not taken to a dealer or independent mechanic for diagnostic testing or repairs. The manufacturer was not notified of the failure. The failure mileage was approximately 109,000.
1998 Mercury Grand Marquis: headlights failing or too dim
15 of the 143 complaints about the 1998 Mercury Grand Marquis describe headlights failing or too dim.
- owner complaints
- 15
- of this car's complaints
- 10%
- typical mileage
- 109,000
- recalls
- 0
Is there a fix? 7 service bulletins cover this area of the car. See below
Headlights failing or too dim by model year
What owners say
Tl* the contact owns a 1998 mercury grand marquis. The contact stated that while driving at 60 MPH, the low beam headlights failed to illuminate. The vehicle was not diagnosed or repaired. The manufacturer was not notified of the failure. The failure mileage was 86,000.
Low/high beam lights inoperative in park or drive, bulbs & wiring checks good, 25 amp fuse was blown, but replaced fuse caused no change.
While driving the car, the headlights goes out, than on, and out. This is unsafe for my wife driving with kids.
Tl* the contact owns a 1998 mercury grand marquis. The contact stated that the headlights failed while driving at various speeds. The vehicle was taken to an authorized dealer and the contact was informed that the lighting control module needed to be replaced. The vehicle was not repaired. The manufacturer was made aware of the failure and offered no assistance. The failure mileage was 120,000. The VIN was unavailable.
My 1998 mercury grand marquis headlights as well as tailights fail. During this all of a sudden while driving at night the headlights while driving will start flashing on and off, then just completely go off, as well as the lights on the doors and light around the dash controls such as (AC buttons an knobs) this happened rarely, but now it happened every single night. I googled this and many more are having the same problem, it seems as if its common in these vehicles. On the forums some say a light control box needs replacing, and then some say a headlight control module needs replacing. This needs to be investigated. A recall needs to be filed for the replacing of the bad part causing this issue. This can cause serious injury to someone if this happens on a dark windy road.
Light switch fails while lights are on high beam for one to two hours. Has happened four times while driving at 70 mpr on interstate 95.all interior and exterior lights blink off, then back on, then off several times before pulling to side of road... Has not happened while using low beams. Strikes fear in me and family each time it happens... I understand it common to my yr and make...what to do??
Consumer states that the exterior of the headlights are fogging up, causing poor visibility.
Was traveling about 60mph on a paved country road, when headlights went out without prior warning, dealership was aware of problem. *ak consumer stated lights flashed on and off several times, the lights were then turned off and turned back on againg, they flashed about 2 more times and then remained on.
When headlights are needed at night or in rainy weahter conditions headlights are very dim, causing poor driver visibility. Also, note headlights look like fog is in the bulbs. Consumer has replaced headlights; but, problem is still occurring. *ak when the head light assembly was replaced, the problem seemed solved, but the plastic lense cover fogged up again. Also the low beam lights appear brighter than high beam.
Headlight lens deteriorated and caused lights to project poorly when used. Dealer notified and refused to assist in this matter, asking the federal safety agency to look into this matter.
The same condition happened on 12/99. I reported this to the service dept.at bill smith ford and they replaced a part that controled the high beams. It happened again 11/99 driving on hwy 85 at approx. The same area. Both times I was driving at night (11pm) with the high beams on when without any warning all the lights went off. I turned off the high beams and the lights came on. I believe that this is a serious problem that you should investigate. I have an appointment to have the car repaired.
Service bulletins that may apply
- Intermittent rapid flashing of the turn signals
- Excessive moisture in the headlamp assembly
- Lamp-brake-invadvertent disabling of brake shift interlock
- Some vehicles produced before 3/5/2002 may exhibit an intermittent rapid flashing of the turn signals
- Vehicles may exhibit an intermittent rapid flashing of the turn signals
- Conditions with the brake lamps inadvertently disabling the brake shift interlock
- For all vehicles with lighting control module concerns that require a module replacement, the technican...
Related recalls
No recalls on record for this model year.
Questions about the 1998 Mercury Grand Marquis headlights
Is headlights failing or too dim a common problem on the 1998 Mercury Grand Marquis?
15 of 143 owner complaints about the 1998 Mercury Grand Marquis (10%) mention headlights failing or too dim. The model year with the most reports is 2005.
Is there a recall or service bulletin for this on the 1998 Mercury Grand Marquis?
There are 0 recalls and 7 service bulletins for the same area of the car. Check them below with your VIN.
Other symptoms on the 1998 Mercury Grand Marquis
Ball joint 15Stalling 10Overheating 6Grinding brakes 5Pulling 5
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