2009 Mercury Mariner problems
Owners have filed 422 complaints with NHTSA about the 2009 Mercury Mariner. Steering is the most reported problem area, at 40% of complaints. Next are engine (14%) and cruise control (10%).
At a glance
- Complaints
- 422 filed with NHTSA
- Most reported
- Steering 40% of complaints
- Crashes and fires
- 11 and 0
- Injuries and deaths
- 4 and 0
- Typical mileage
- 93,000 miles 336 complaints with mileage
Source: NHTSA owner complaints
Where the complaints are
Share of this model year's complaints by the part of the car involved. One complaint can name more than one part, so the shares can add up to more than 100%.
When problems show up
View the numbers
| Mileage | Complaints |
|---|---|
| 0k to 20k miles | 20 |
| 20k to 40k miles | 28 |
| 40k to 60k miles | 38 |
| 60k to 80k miles | 48 |
| 80k to 100k miles | 59 |
| 100k to 120k miles | 58 |
| 120k to 140k miles | 32 |
| 140k to 160k miles | 28 |
| 160k to 180k miles | 18 |
| 180k to 200k miles | 5 |
| 200k+ miles | 2 |
What the data shows
Of the 336 complaints that include odometer readings, half describe a problem before roughly 93,000 miles. For steering specifically, the median reported mileage is about 120,000 miles (121 complaints with mileage).
Safety-related details: 11 complaints mention a crash; 4 injuries reported. Its complaints are less severe on average than those of 90% of model years in our database.
Looking only at complaints filed within five years of the model year (so older and newer years are comparable), the 2009 ranks 2nd most-complained-about out of 7 model years of the Mercury Mariner with enough data (174 complaints in that window). It is also covered by 1 safety recall campaign.
What owners wrote
A few complaints as filed, shortened and with personal details removed. The first ones are among the most serious reports for this model year; the rest are typical.
Tl* the contact owns a 2009 mercury mariner. While the contact was driving approximately 25 MPH, an opposing vehicle unexpectedly drove into her lane causing a head on crash. The contact suffered a pinch nerve in the neck area and body bruises from the seat belt. The air bags failed to deploy with the substantial impact. The vehicle sustained severe front end damage and was towed to an impound facility temporarily. The manufacturer was notified of the defect. The approximate failure mileage was 39,000.
Have had multiple brake failures including an accident that my daughter was involved in as a result of brake failure. The brakes will work fine for a short period of time and then out of nowhere you step on the brake and there's just a soft pedal for about 3/4 of the was before you get a very soft brake. Into this for thousands and now ford says a hydraulic brake sensor is the problem for between $2100-2400. Heard that it was fixed every time I've picked it up. Dangerous!!!
This is an update to the complaint from June- Because I have to compensate manually for the electric power steering, I’ve aggravated upper back injuries and strained hip muscles I incurred from work. I have to attend physical therapy for those injuries now, but it’s useless if my only mode of transportation prolongs my recovery.—— My 2009 Mercury Mariner’s steering wheel started locking up 3 months ago, and it’s hard to get the steering wheel and the tires to agree on one direction.
While entering interstate highway, engine balked like bad gas. After two or three tankfuls and the vehicle dying in traffic, I left it with my dealer to find the problem. After a week, the vehicle had not died for them so I brought it home, only to continue with the same dying and hesitating when accelerated. A month or so later the dealer kept it again for about 5 days and it still did okay for them. They have no idea what the "problem" is.
Mercury mariner (2009) v6 4wd. Has stalled twice. 1. While driving at 35 MPH. It stalled and was able to restart once the vehicle stopped on the side of the road. We took it to a ford dealer and the throttle body was replaced. 2. Stalled when slowing to a stop. This was after the throttle body was replaced on 10/13/2017. Only driven about 500 miles. Both times vehicle was going down a country road.