Two problems related to vehicle shudder have been reported for the 2009 Mercury Mariner. The most recently reported issues are listed below. Please also check out the statistics and reliability analysis of the 2009 Mercury Mariner based on all problems reported for the 2009 Mariner.
Driving my 2009 Mariner premier about 35/45 mph when wrench symbol comes on indicating throttle control powertrain / transmission problem car is not accelerating properly and transmission is jerking when I step on the gas pedal and the car shakes vibrates and feels under powered. Got home and parked it. Started it up and now check engine light is also on. Is this covered by the recall for extended warranty from Ford ?.
I was leaving work and driving down a road at about 50mph when all of a sudden my car jumped and I then was coming up to a red light so I was braking and behind a car. At the red light I was a few inches from hitting the car because my car kept jumping forward. I then got scared and turned my car off and back on and it was driving fine. Then all of a sudden it did the same thing and I couldn't accelerate I would press on the gas and my car was just shaking and losing speed and wouldn't move. Thankfully I didn't drive the highway home that day.