One problem related to transmission gear slipping has been reported for the 2007 Mercury Mariner. The most recently reported issues are listed below. Please also check out the statistics and reliability analysis of the 2007 Mercury Mariner based on all problems reported for the 2007 Mariner.
Tl the contact owns a 2007 Mercury Mariner. While the contact's son was driving the vehicle, the transmission slipped and went into other gears. When the vehicle was in neutral, it shifted into drive on its own. On another occasion, the contact's son stated that the vehicle felt as if it were dragging after it jumped. In addition, "overdrive" appeared on the control panel the vehicle was towed to an independent mechanic, but was not diagnosed or repaired. The vehicle was then towed to another independent mechanic who was unable to duplicate the failure. The manufacturer was made aware of the failure and informed the contact to call NHTSA. The dealer was not contacted. The failure mileage was 152,000.