Alternator Not Charging Fix October 15, 2025, 02:59:38 pm This one's for general information if you ever experience a no-charge situation.In another thread I mentioned that I wired in a louder turn beeper. Weirdly, after experiencing the joy of listening to that little siren, I started the engine to see what it sounded like in a noisy passenger compartment (engine cowling was off). The beeper beeped well but I noted that the alternator was not charging the battery. Turned out that when I was screwing around with the interior fuse box I had jiggled loose #15. The owner's manual indicates that #15 is the "Trailer battery charge relay, Cluster, BSM." Anyhow, no fuse in #15 = no charging.The Ford provided me with a Check Engine Light but I had loaned my scanner to my son-in-law so I'm not sure if the CEL would have pointed me to the fuse.jor 1 Likes
Re: Alternator Not Charging Fix Reply #1 – October 15, 2025, 03:14:15 pm I have caused many problems working on things like this; it's part of the game. You were smart enough to check the area you were working in to see if something could have been knocked loose.I doubt that any code would have directed you to the fuse; it would probably have been a message that the alternator wasn't charging. Codes indicate a problem, but many times do not give a cause. It's up to the mechanic to decipher the code and track down the issue.Good catch.Larry 1 Likes