 My trans kept dropping out of gear. No pattern - interstate, intersections, totally unpredictable. Would leave me stranded & the car would not go into gear. Ford dealer couldn't find the problem until I made video. They said I needed a $200 software patch that didn't work. I drove it 200 feet & it died in the dealers lot. After 8 days in the shop, they found a loose ground wire in the Transmission Control Module inside the transmission. I have driven about 450 miles with no recurrence of the problem. If you are having trans problems, let your dealer know to check the grounds on the TCM before you spend $. I regard it as a manufacturing & design flaw. 