1994 Mercury Marquis Vehicle speed control Problems
- Complaints
- 8about this part
- Share
- 27%of 30 total for the year
- Median mileage
- 135,000miles
- Trend
- Not enough dataFewer than 15 complaints, too few for a reliable trend.
NHTSA recorded 8 complaints about the vehicle speed control of the 1994 Mercury Marquis, 27% of the 30 complaints for this model year. Where a mileage was given, the median is 135,000 miles. 4 a fire, according to the filers.
Fewer than 15 complaints name this part, so treat the figures as a rough indication only.
Example complaints
Selected from NHTSA records; personal details are removed. They are consumer reports, not findings.
“1994 Mercury grand Marquis. The cruise control switch. My brake lights stopped working. A nice man pulled up next to me and told me my brake lights are out. I went home popped the hood of the car and started looking for a bad fuse. I found it in the car compartment not under the hood. Looked out of the windshield and saw smoke I jumped out of the car and saw where the smoke was coming from and tore the wires from the switch. I went to a ford dealer and he said it is not covered. Wrong year. This is the same switch that has caused fires that burned down homes and has caused deaths. …”
NHTSA complaint #10157781, filed 2006-05, 135,000 miles“The speed switch on my wife's 1994 Mercury Marquis suddenly and unexpectedly ignited causing a massive fire which destroyed our home and nearly killed my family.”
NHTSA complaint #10098839, filed 2004-11“At approximately 2:00 a.m on july 6, 2005, my husband and 16 year old son were awaken by a neighbor, telling them that our 1994 grand marquise (Mercury) was on fire. My husband and son barely escaped when the fire hit the house and burned our home down to the ground. The car had been parked for nearly 7 1/2 hours before the fire started. It is believed that the fire was caused by the cruise control. I am very fortunate that my daughter (13 years old) and myself were out of town, because the fire department said they do not think that we would have all four escaped from the house. …”
NHTSA complaint #10133252, filed 2005-08“Idle control module started making alot of noise. The car idled very fast and irregularly. When driving on highway 65-70mph the vehicle went up to 85, had to hit the accelerator pedal and the brakes to slow the vehicle down. Dealer was contacted and repaired the idle control module.”
NHTSA complaint #824993, filed 1998-07Vehicle speed control: other model years
| Year | Complaints | Share of year |
|---|---|---|
| 2003 | 5 | 15% |
| 2002 | 1 | 9% |
| 2001 | 3 | 12% |
| 2000 | 2 | 9% |
| 1999 | 4 | 17% |
| 1998 | 2 | 7% |
| 1997 | 4 | 8% |
| 1996 | 2 | 6% |
| 1995 | 3 | 15% |
| 1994 | 8 | 27% |
| 1993 | 4 | 17% |
| 1992 | 5 | 21% |
| 1991 | 2 | 22% |
| 1990 | 1 | 17% |
| 1989 | 1 | 10% |
| 1988 | 1 | 11% |
| 1985 | 1 | 20% |
Other parts of the 1994 Mercury Marquis
7 complaintsElectrical system
6 complaintsEngine cooling
4 complaintsSeats
4 complaintsBrakes
3 complaintsExterior lighting
2 complaintsSteering
2 complaintsFuel system
1 complaintsTires
1 complaintsTransmission and drivetrain
1 complaints
← All problems reported for the 1994 Mercury Marquis
About this data. Data from NHTSA (ODI) complaints, recalls, TSBs and investigations, updated Oct 31, 2026. Complaints are unverified consumer reports and may be duplicated or inaccurate.
To check a specific vehicle for open recalls, use its VIN at nhtsa.gov/recalls. Methodology