Which Fuse and Relay Control Trailer Charging Circuit in 2017 Ford F-250
Question:
My camper is not charging when hooked up too the truck. Is it possible I have blown it when I accidentally reversed the polarities on the camper battery. I know stupid thing to do. I am also getting a service charging system now on the dash of my truck. It doesnt stay on long but it has done it a couple of times. I dont get this warning driving without the campwr Also will I ba able to purchase this relay at an auto parts store?
asked by: Danny
Expert Reply:
Yes, it is possible that accidentally reversing your battery connection polarity could blow the fuse or relay that protects the trailer charging circuit in your 2017 Ford F-250. The online owner's manual indicates on page 313 that the 30-amp fuse in position 27 and the relay in position 37 protect this charging circuit and these two items should be checked or replaced. I suggest obtaining both a fuse and relay at your local auto parts store; bringing in the old parts will make it easy to find correct replacements. The error code should disappear once you get the new fuse and relay installed.
Separately I will send you a link to the online manual I reviewed; please refer to page 313.
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