Rwilson03

I have a 2007 Expedition with 168,000 miles. After a recent dead battery, the wrench icon appeared and did not go off. Dealer ran the code and said it was the 4wd control module. Easy enough but the dealer stated the 4wd control module is an obsolete part and is not available. I called around to some salvage yards and they do not know what i am talking about. I would like to get this fixed before winter. Where is this part located? Is it an easy swap or does the dealer need to program? I tried asking the dealer but after they charged me $139 for a diagnostic and found out that is all they could get , they stopped providing me information, i.e. part number or a way to rectify the issue. Any and all help is appreciated. I tried searching older threads but nothing seemed to match what I was looking for.

Summers22

iTrader: (2)

Go talk to the service manager. They will provide you a part number. Sounds like an A-hole was helping you.

greasyknuckles

I think that module is in the b-pillar (between front and rear doors) drivers side. before
you replace it remove the scuff plate (drivers door opening plastic piece) the wire harness is under it. near the front of where that scuff plate mates up to the kick
panel (park brake pedal-colored plastic behind it) look for a purple wire right about where
the harness bends down onto the floor it will go into a splice as 1 and come out as 2 wires, look for green corrosion, and tug on it a little to see if that connection comes
apart. have seen this many times misdiagnosed as a module.