2005 Mercury Mountaineer Vehicle speed control Problems
- Complaints
- 13about this part
- Share
- 16%of 82 total for the year
- Median mileage
- 40,000miles
- Trend
- Not enough dataFewer than 15 complaints, too few for a reliable trend.
NHTSA recorded 13 complaints about the vehicle speed control of the 2005 Mercury Mountaineer, 16% of the 82 complaints for this model year. Where a mileage was given, the median is 40,000 miles. 3 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 purchased a used 2005 Mercury Mountaineer last month, with 135,400 miles, while using cruise control and traveling approximately 35 MPH, the road went from level to a very slight downgrade. The car then just shut off after audible warning bell was heard. Noticed dashboard lights were all lit and battery gage was normal. I lost power steering, brakes and oil pressure. After pulling safely to the side of the road, I rested for 30 seconds before restarting the car, which subsequently operated normally. …”
NHTSA complaint #11150051, filed 2018-11, 136,200 miles“The engine has shut off twice while driving using cruise control. The first time I was able to get to the side of road and restart it.. The second time I put it in neutral and restarted it while moving. I am afraid to use the cruise control now - if there had been oncoming traffic we would've had a head-on collision as I was on a corner and went into the other lane. When the engine shuts off, the power steering is gone leaving it very difficult to turn.”
NHTSA complaint #10609479, filed 2014-07, 105,000 miles“I had the cruise control set on 30 MPH driving in a residential area. Without warning, all the lights on my dash flashed, and my vehicle lost all power. Very scary. No more power steering, no power brakes, while coasting through a neighborhood. I put the car in neutral, turned the key off, back on again, and put the car back in drive. That fixed the problem. This is very scary and dangerous!! This is the third time it has happened to me. I am afraid to use the cruise control on my car now :(”
NHTSA complaint #10703364, filed 2015-04, 133,000 miles“Sometimes when I'm driving around 35 MPH, the car will send an audible warning signal, most of the dashboard lights come on and the engine abruptly shuts off. It never happens with my wife who is the primary driver of this vehicle. This began shortly after purchase and was mentioned to our l/m dealer (before they went out of business). I just made the correlation with the speed control last weekend. In fact, I can duplicate the issue now. The shutoff occurs during deceleration when speed control is engaged around 35 MPH. …”
NHTSA complaint #10853114, filed 2016-04, 40,000 miles“2005 Mercury Mountaineer cruise control emergency while driving my wife's 2005 Mercury Mountaineer at approximately 50 MPH and using the cruise control the engine shut off. (dangerous and scary) I immediately placed the engine in neutral and restarted it with no trouble. Fortunately we were on a straight road. The engine shut down appeared to occur because the cruise control de-accelerated the engine while coasting down hill (using the cruise control) to below 400 RPM's. Below 400 RPM's the engine stops. …”
NHTSA complaint #10372452, filed 2010-12, 48,549 milesVehicle speed control: other model years
| Year | Complaints | Share of year |
|---|---|---|
| 2010 | 4 | 31% |
| 2009 | 1 | 17% |
| 2008 | 2 | 2% |
| 2007 | 7 | 9% |
| 2006 | 3 | 3% |
| 2005 | 13 | 16% |
| 2004 | 21 | 10% |
| 2003 | 9 | 6% |
| 2002 | 18 | 5% |
| 2001 | 2 | 9% |
| 2000 | 28 | 23% |
| 1999 | 11 | 7% |
| 1998 | 36 | 15% |
| 1997 | 59 | 18% |
Other parts of the 2005 Mercury Mountaineer
26 complaintsTransmission and drivetrain
19 complaintsEngine
7 complaintsBrakes
5 complaintsElectrical system
5 complaintsEngine cooling
5 complaintsSteering
5 complaintsOther or unknown
4 complaintsVisibility (wipers, defrost, mirrors)
4 complaintsAir bags
3 complaintsFuel system
3 complaintsEquipment
2 complaints
← All problems reported for the 2005 Mercury Mountaineer
About this data. Data from NHTSA (ODI) complaints, recalls, TSBs and investigations, updated Nov 1, 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