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On my 2013 w/5.0L At cold start up there are 3 warning messages. Hill descent control fault, power steering assist fail, service advace track system. The absence of power steering is the worst thing of coarse. 1st event had no choice but get to work on time. shut down and restarted after warming up driving it was fine. Have managed with it for several weeks. Lower morning temperatures are requiring too long of a warm up period. When it's mad there are no turn signals, or power steering with traction control/ABS or vehicle stability. haven't tested other controls on steering wheel etc. While out of state hunting a dealer suggested my steering column control module to be the issue but did not have one. So interesting that it performs normally above freezing. The old truck mechanic in me says moisture in a relay some where. Modern vehicle technician thinks a bad printed circuit board could be responsible for my new arm work out program. All advice is greatly appreciated thank you.