2005 Mountaineer: 6. Ford Guardabarros para 2007 Mercury Mountaineer They little wrench symbol is on though. Vehicle will not shift out of park. The Mercury Mountaineer is a great suv the ride and handling is excellent the V8 power is superb and the comfort is great and from what i can see the leather and other interior materials are great quality and the navigation system is cool and the power moon roof and the Sirius Satellite Radio are awesome and the rear parking sensors come in handy when parallel parking and i am just really happy with my Mountaineer its been great so far not a problem and everything on it works great and its a great price for what you get mine was only $38,500 and the Honda Pilot with all the same equipment was over $40,000 so i got a great vehicle and a great deal i highly recommend the Mercury Mountaineer V8 .. while the average number of problems reported for the 15 model years of the Mercury Mountaineer is 172. Based on information received from our latest Battery Replacement. engine, transmission, and brakes to power equipment and the electrical system. The only time this will not happen is if you control the vehicle speed with the cruise control. The PPMY index of a certain model is defined as the problems reported per thousand vehicles per Year. Get notified about new defects, investigations, recalls & lawsuits for the. Top Mercury Mountaineer Problems Crack on Lift Gate 322 people have reported this 183 Heater Stuck on Hottest Setting Due to Broken Heater Blend Door 128 people have reported this 55 Problems With 5-speed Automatic Transmission are Common 101 people have reported this 39 Plastic Intake Manifold May Crack Causing Coolant Leak When I let off of brake pedal it lounges forward. We still dont recognize that sign in. Engine rebuild or replacement, cylinder head, head gasket, turbo or supercharger, timing chain or timing belt.