We have an 03 Expedition bought new now with 46,000 miles. My wife's vehicle but the other day I drove it and I noticed the Over Drive light flashes on it, it did not seem to make a difference (to keep it from flashing) if I pushed the button in on the end of the drive selector. I have not had time to test but it appears that it is still in overdrive but have not tested to push the selector in yet to see if forces it out. Any ideas on what is causing this and how to fix it. thanks tom