Troubleshooting Trailer Brake Module Fault on 2008 Ford F-250 w/ a Factory Controller
Updated 05/07/2025 | Published 05/02/2025
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Question:
I have a 2008 F-250 4x4 6.4 litre engine and I get trailer brake module come up on my screen then my brakes lock up, now theyre staying locked up. Is the a relief for this that isnt going to cost me an arm and a leg?
asked by: Jeff C
Expert Reply:
Are you talking about the factory brake controller? If so it sounds like you may have a short in the wiring on your 2008 Ford F-250. You can use a Multimeter like item # PT29ZR to check this at your 7-way by checking for continuity with the brake wire and any other wire on the 7-way. You can see the terminals in the image below.
If this is a factory controller, I recommend checking with your local dealer as well to see if there are any required re-flashes needed for it.
Have you checked your brake away kit? The plunger may have come out or it could've gone bad, dead battery, bad wiring, etc.
What kind of brake controller do you have?
(click to enlarge)
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Jeff C.
5/6/2025
it is factory installed