One problem related to radiator has been reported for the 2007 Mercury Mountaineer. The most recently reported issues are listed below. Please also check out the statistics and reliability analysis of the 2007 Mercury Mountaineer based on all problems reported for the 2007 Mountaineer.
I was driving on the highway and noticed that my steering was not working well. My engine was overheating and eventually shut off. I had to pull over on the side of the highway. When I got someone to look at the car, we realized it had no coolant. We filled up the coolant and everything seemed fine. About a month later I noticed that the engine was making the same noise as it had before as if it were working too hard. I checked the coolant and it was completely empty again. I have a friend who also owns the mm and had the same problem. The repair and cost of a new radiator was 1500. Ford/merucy needs to do a recall on this product and get it taken care of. I just purchased this car in January and should not have to be spending so much money on a repair.