2004 Mercury Mountaineer Brakes Problems
- Complaints
- 5about this part
- Share
- 2%of 210 total for the year
- Median mileage
- 25,050miles
- Trend
- Not enough dataFewer than 15 complaints, too few for a reliable trend.
NHTSA recorded 5 complaints about the brakes of the 2004 Mercury Mountaineer, 2% of the 210 complaints for this model year. Where a mileage was given, the median is 25,050 miles. 2 of these say a crash was involved, 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.
“I have a used 2004 Mercury Mountaineer I purchased in 12/2008 it had 53,000 miles. I have done all of the required maintenance oil changes,brake pads,fluid changes, and 60,000-mile service package. I have nothing but problems with the vehicle. The failures I have are as follows: 1. Front/rear brake pads,front/rear rotors,spark plugs,-defected parts 2. Battery 3. Tires-constant flats 4. Lug torque-driver front/rear 5. Hood shocks,tire pressure sensor light 6. Transmission fluid leak/ front pump seal leak 7. Noise at harmonic balancer 8. Roar noise and shakes at all speeds 9. …”
NHTSA complaint #10408434, filed 2011-06, 70,000 miles“- the contact stated that while driving the 2004 Mercury Mountaineer with 5000 failure mileage)at 20 MPH and turning around in a parking lot the vehicle slowed down to a complete stop with the foot on the brake. The vehicle was turned off and restarted. The vehicle only went approximately 100 yards. The vehicle had to be towed to the dealer, who had not determined the cause of the problem. The current mileage was 44,000.”
NHTSA complaint #10184952, filed 2007-03, 15,000 miles“Brake pedal rubber cover came off during braking. Foot slipped to accelerator causing car to learch forward hitting rear of parked car and causing damage to that car.”
NHTSA complaint #10182938, filed 2007-02, 35,100 miles“The contact owns a 2004 Mercury Mountaineer. While driving in reverse and shifting gears, the vehicle hesitated. The cruise control engaged without warning and the vehicle stalled while driving 75mph. The service manager drove with the contact and observed the failure; however, he stated that the vehicle was operating normally. The accelerator also does not engage properly when increasing speed. The dealer stated that the electrical brain failed and attempted to repair it on two occasions. …”
NHTSA complaint #10190705, filed 2007-05, 5 miles“Consumer complained about a brake problem. When applying the brakes pedal sank in intermittently. Vehicle was taken to dealer for service, but dealer could not duplicate the problem.”
NHTSA complaint #10117113, filed 2005-03Brakes: other model years
| Year | Complaints | Share of year |
|---|---|---|
| 2010 | 5 | 38% |
| 2009 | 1 | 17% |
| 2008 | 5 | 5% |
| 2007 | 1 | 1% |
| 2006 | 3 | 3% |
| 2005 | 5 | 6% |
| 2004 | 5 | 2% |
| 2003 | 10 | 7% |
| 2002 | 23 | 6% |
| 2001 | 3 | 14% |
| 2000 | 8 | 7% |
| 1999 | 9 | 6% |
| 1998 | 6 | 3% |
| 1997 | 40 | 12% |
Other parts of the 2004 Mercury Mountaineer
79 complaintsTransmission and drivetrain
64 complaintsVehicle speed control
21 complaintsElectrical system
16 complaintsAir bags
12 complaintsEngine cooling
11 complaintsOther or unknown
9 complaintsEngine
8 complaintsVisibility (wipers, defrost, mirrors)
7 complaintsSuspension
6 complaintsSteering
5 complaintsLatches, locks and linkages
4 complaints
← All problems reported for the 2004 Mercury Mountaineer
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