The contact owns a 2008 Mercury Mariner. The contact stated while at a stop sign, the vehicle failed to accelerate upon depression of accelerator pedal with the oil warning light flashing on the instrument panel. The contact drove the vehicle despite the failure returning upon restarting the vehicle. The contact had the vehicle towed to an independent mechanic and was informed that the shift lever had disengaged from the transmission. The contact was then referred to the manufacturer after the mechanic discovered NHTSA Campaign Number: 15V606000 (Power Train); which the mechanic linked to the failure. The manufacturer was notified of the failure and informed the contact that the vehicle was not included in the recall. The contact was referred to the NHTSA Hotline to file a complaint. The vehicle was not repaired. The failure mileage was unknown.