Four wheel drive issues
Hi guy, I bought a 2004 Ford Expedition and didn’t realize the four wheel drive didn’t work. It shows no light as to service it and I brought it into ford and they said I needed to replace the switch. I did that and it still isn’t working. I also was told it was a shortage or a loose wire. All the fuses are good. Any advice on how to check if it is an electrical problem or just help in general?