Mercury Mariner owners have reported 1 problem related to fail to accelerate (under the vehicle speed control category). The most recently reported issues are listed below. Also please check out the statistics and reliability analysis of Mercury Mariner based on all problems reported for the Mariner.
The contact owns a 2009 Mercury Mariner. The contact stated that while driving approximately 25 mph, the vehicle hesitated and lunged forward as the engine warning indicator illuminated. The contact powered the vehicle off and back on and drove the vehicle without incident, however, the failure recurred approximately two weeks later. The contact powered the vehicle off and back on, however, the vehicle failed to accelerate. The vehicle was towed to an independent mechanic and was diagnosed that the throttle actuator needed to be replaced. The vehicle was repaired. The manufacturer was not made aware of the failure. The approximate failure mileage was 89,000.
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