I had pretty much all the same issues you have https://www.ford-trucks.com/forums/1...l#post11232271. After locating, removing and checking almost all the modules and their connectors, I found the problem. The violet wire that runs to all the modules (stability assist, climate controlled seat, parking aid, vsm etc...) was broken.



It was broken under the drivers side kick plate about 6-8 inches from where the wire bundle comes off the A pillar. The union from 1-3 wires is where it was broken. The ends of the break were corroded. I'm not sure what caused it to break but, once I fixed it, all the issues went away except for the check advancetrac message, advancetrac off issue.



The only code I get now it a C1998 and the recommended fix is to reprogram the stability assist module. I didn't get this code until I unplugged the module and turned the key on (with it unplugged).



If you need a good source for the wiring schematics and connector pin outs, let me know.