Two problems related to ignition have been reported for the 2008 Mercury Mountaineer. The most recently reported issues are listed below. Please also check out the statistics and reliability analysis of the 2008 Mercury Mountaineer based on all problems reported for the 2008 Mountaineer.
Driver seat moves back to the "easy exit" position while driving! had to manually move the seat up with the side controls in order to reach the pedals again. Could not reach the brake! dealer replaced ignition key tumbler, same problem dealer replaced ignition electrical switch, solution pending. This should be a recall as it is a major safety issue!!!.
While driving on a long trip, without warning, the memory seats change seat setting and went back fully as if I shut the vehicle off, this happened several times while I was driving without my assistance. I finally realized that when I touched the keys in the ignition, the seat went back to its original setting. When this occurred I was unable to reach brake and accelerator pedals which could have caused a fatal accident to occur. If this happened at a time that I needed to apply the brakes, I would not be able to and there would have been no way for me to stop. I took my vehicle to an authorized dealer who replaced the ignition. On 6/6/2012 the same thing happened again (mileage 60774), this time I struck the car in front of me, it was a good thing it happened while I was in traffic, and neither vehicle sustained damage. I brought my vehicle to the same authorized dealer who replaced the ignition again. Thank god all repairs were covered under my warranty. I have been lucky twice. My warranty runs out at 75000, what if it happens a third time, what will my cost then???? or what if it happens while traveling on the highway and I need to stop??.