2009 Mercury Mariner vehicle speed control problems
41 owner complaints filed with NHTSA name the vehicle speed control on the 2009 Mercury Mariner — 13% of all complaints for this model year.
What owners report
“The PCM shorts out and fails when sparkplug and Coil packs replaced this cause the steering system to fail speedometer to quit and no transmission connection”
filed May 11, 2023
“Tool light comes on and car loses power in traffic, very, very dangerous. Dealership updated with computer but vehicle is still doing it. Please do a recall ford.”
filed Feb 18, 2018
Verbatim excerpts from complaints filed with NHTSA. Reports are not independently verified.
Vehicle Speed Control problems in other Mariner years
| Year | Reports | Share |
|---|---|---|
| 2011 Mariner | 15 | 17% |
| 2010 Mariner | 66 | 25% |
| 2008 Mariner | 31 | 7% |
| 2007 Mariner | 4 | 12% |
| 2006 Mariner | 13 | 21% |
| 2005 Mariner | 9 | 13% |
Other reported problem areas on the 2009 Mercury Mariner
Counts are unique NHTSA complaints naming this component group. Complaints are unverified owner reports; mileage is computed only from complaints that included a usable odometer reading.