I have a 2006 F-150 with 4wheel drive on the fly. When I bought the truck I had the dealership replace the 4X4 Cylanoid because it would try to shift into 4 wheel while driving down the highway. Its been about 8 months since it was replaced and now the Electronic 4 wheel drive works when it wants to. Im thinking its the cylanoid again but im not sure. Does anyone have any ideas or know of any recall on these cylaniods because this isnt the first ford I have heard with this problem...