battery warning light

Asked by GuruH7WCP Aug 10, 2019 at 04:25 PM about the 2012 Ford F-150 XL LB

Question type: Maintenance & Repair

The battery warning light comes on after about 30 seconds after I start my truck.  Just replaced the alternator and still the same thing.   A guy at the auto parts store said to check the ring around the negative battery cable.  Not sure how to do that and where I can get a replacement.

3 Answers
41,110

TDolby answered 5 years ago

You might need another alternator. Drive back over and have it tested. Some remanufactured ones are faulty out of the box. By ring I assume I assume he meant the felt pad for the battery terminal that is installed to prevent corrosion?

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GuruH7WCP answered 5 years ago

The alternator is checks out ok. The ring is a plastic ring that goes around the negative battery cable and has a 3 wire terminal plugged in to it.

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27,460

oilyspill answered 5 years ago

Is the generator rebuilt or brand new? Rebuilders have a tough time rebuilding ford generators, correctly. It may charge just fine, but, there may be a lite on the dash. If you go to ford dealership and buy brand new generator, will it fix your problem? I don't know? Granted, rebuilt generator doesn't cost as much. I am as cost conscience as the next person.

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