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Just pulled a trailer, everything was working, unhooked the trailer and this light is on my dash? The owners manual doesn’t have this symbol. What does it mean?
That's the trailer brake diconnected warning light. Means you have a brake fault or wiring fault in the trailer. The truck "senses" that the trailer has electric brakes but is not getting the proper feedback fro them. I have had that happen when disconnecting the trailer with the truck running. Went away on it's own after a key/sleep cycle.
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