When cold, won't turn over and shows security lock-out. Starts normal if warmed
What is your question?
Going through diagnostic sequence, it shows "Check Brake System" and "Trailer Brake Module Failure". When cab is warmed up (with small ceramic heater) to about 75 degrees, the truck starts normally with no diagnostic messages. Truck does not have a chipped key (no PAT).
What makes this problem better or worse?
Warm up cab
How long has your 2008 Ford F-350 Super Duty had this problem?
last month or so; had the same trouble kast winter
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