2009 Mercury Mariner Lane departure Problems
- Complaints
- 2about this part
- Share
- 1%of 315 total for the year
- Median mileage
- —not reported
- Trend
- Not enough dataFewer than 15 complaints, too few for a reliable trend.
NHTSA recorded 2 complaints about the lane departure of the 2009 Mercury Mariner, 1% of the 315 complaints for this model year.
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.
“The power steering assist light came on and I kept losing my power steering. I could turn the car off then back on and it would work again and then all of a sudden it went out again in the middle of a curve and wint come back on.”
NHTSA complaint #11494660, filed 2022-11Lane departure: other model years
| Year | Complaints | Share of year |
|---|---|---|
| 2009 | 2 | 1% |
Other parts of the 2009 Mercury Mariner
167 complaintsEngine
53 complaintsTransmission and drivetrain
44 complaintsVehicle speed control
41 complaintsFuel system
30 complaintsElectrical system
22 complaintsOther or unknown
15 complaintsBrakes
14 complaintsEngine cooling
7 complaintsWheels
7 complaintsAir bags
4 complaintsElectronic stability control
4 complaints
← All problems reported for the 2009 Mercury Mariner
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