This first began when we went to Oregon from dry Central Valley in California and hit rain. Multiple error messages appeared: Service Advance Trac, Check 4×4, Hill Assist Not Available, ABS, Steering Assist Fault, etc. Power steering assist was lost and is now intermittent which creates a dangerous situation. The ABS brakes made load groaning noises. I went to OReilleys and used their OBD2 scanner. It showed codes: U1012-00, U0212-00, U0121-00, P062C-00, all being communication errors. I got a new battery and had a shop scan it. The clockspring was bad so it was replaced with an M from Sunrise Ford. He cant get any communication with any of the other modules. I researched the issues and disconnected the battery while I cleaned the ABS controller connection with electrical contact cleaner. I checked some of the grounding points that werent checked by the shop. All of the error messages are now gone except the STEERING ASSIST FAULT. My research showed that this may be related to a wheel speed sensor or the front hub that contains the sensor. It also might be the ABS controller. I entered Engineering Test Mode and have the following continuous DTCs: C40182, C12100, C41582, C42082, C15100, C21200, C42982, C10200. Since they all end in 00 or 82 I think they are likely related. I was told in an online forum that they are communication errors. I think that might apply to the 00 errors, but dont know about the 82 errors. The truck has under 28,000 miles and the extended warranty expired in May 2024.