leave it to mercury. I have that kind of issues with my wife's 06 mountaineer. the tire pressure sensor is messed up so the ecu is then messed up. the dash lights don't work for some reason. I had the speed sensor go out on it and you could not move 5 ft with out the brakes locking up not allowing you to move when that happened. anyway enough of me banging on mercury. I sent you a pm with my info.