I have a 2002 Ford Explorer. On Wednesday the 4x4 mode started coming on during turns. I took into the Ford dealer and they couldn't replicate the problem and found nothing wrong. It drove great on Thursday night. Friday morning I turned it on and it was already in 4x4 low. I tried to put it into drive to just get to the top of my driveway except the transmission didn't engage and I started rolling back. I turned the car off and on, it was fine. The same thing happend this morning except the transmission did engage. After restarting the car it went away. The dealer said they had never heard of this and I don't know how to get them to fix it. Any advice? I am horrified that this may happen while on the highway and I am seriously considering terminating my lease and getting a 4runner. In my experience, when something is intermittent, it's not usually repairable. Getting out of the lease is expensive so I was just wondering if anyone thought I have any hope of getting this problem fixed or if I should just go for the 4runner?