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Electrical systemPart report

2004 Mercury Monterey Electrical system Problems

Complaints
11about this part
Share
4%of 283 total for the year
Median mileage
118,000miles
Trend
Not enough dataFewer than 15 complaints, too few for a reliable trend.

NHTSA recorded 11 complaints about the electrical system of the 2004 Mercury Monterey, 4% of the 283 complaints for this model year. Where a mileage was given, the median is 118,000 miles. 1 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.

“My wife was backing out of her parking spot, put the van in forward, and discovered that it would not move. There were no indications that this event was going to happen. Our repair technician had to replace our planetary gearset, because they were destroyed, the torque converter was replaced as a precaution, and the neutral switch was replaced because it was thought to be the root cause. However a broken cam switch wire was preventing the car from operating normally. When that was finally discovered, we were able to get our van back.”

NHTSA complaint #10290712, filed 2009-11, 60,000 miles

“Odometer Fraud. The contact purchased a 2004 Mercury Monterey. It was discovered that there was a mileage discrepancy. The vehicle was a dealer sale. At the time of purchase, the mileage was 223,476 and at the time of registration, it was discovered that the mileage was 361,749.”

NHTSA complaint #11715312, filed 2026-02, 361,749 miles

“In early 2012 both brake lights on dash would come on sporadically while driving.then came on more frequently. Soon the battery light started to come on at stops or low idles. 8/2012 dealer could not reproduce the brake lights coming on, but replaced alternator. 11/2012 still problem with brake lights on the dash coming on now plus the check engine light. …”

NHTSA complaint #10549811, filed 2013-10, 118,000 miles

“1st - radio started flashing on and off randomly - took to ford dealer - no error code, no answer. 2nd - heated seat on drivers side quit working - took to ford dealer - no error code, no answer. Took to private repair shop - error code of low voltage battery - replaced battery for $125 3rd - automatic lights quit working, dashboard control went blank - took to ford dealer - same low voltage error code - despite new battery. No other answers. …”

NHTSA complaint #10493094, filed 2013-01, 116,000 miles

“While driving the van the lights on the dash board goes out. The speed declines slightly, and the headlights blink on and off. The radio turns on and off. The heat turns on and off. The alarms inside starts to chime. The power is lost to the windows and the door locks. When driving at night the dash lights go off and when this happens you cannot see the speedometer or anything else for that matter. This really needs to be looked into. I'm afraid that this electrical problem will soon cause a fire of some sort.”

NHTSA complaint #10666964, filed 2014-12, 148,000 miles

Related service bulletins

Electrical system: other model years

YearComplaintsShare of year
2007114%
200625%
200565%
2004114%

Other parts of the 2004 Mercury Monterey

Transmission and drivetrain
203 complaintsBody and structure
19 complaintsSeats
16 complaintsVehicle speed control
11 complaintsFuel system
10 complaintsBrakes
8 complaintsSteering
8 complaintsEngine
7 complaintsEngine cooling
7 complaintsWheels
7 complaintsOther or unknown
6 complaintsSuspension
6 complaints

← All problems reported for the 2004 Mercury Monterey

About this data. Data from NHTSA (ODI) complaints, recalls, TSBs and investigations, updated Oct 29, 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