Will not crank over?

2012 FORD F-250
280,000 MILES • 6.7L • V8 • TURBO • 4WD • AUTOMATIC
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CHUCK.STER
  • MEMBER
  • 1 POST
The batteries are fully charged, try to start lights on dash flicker and go out totally and run start really clicks even with key out.
May 31, 2022 at 7:32 AM
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STRAILER
  • CAR REPAIR CONTRIBUTOR
  • 54,274 POSTS
Even though the battery charger may say the batteries are charged it sounds like the batteries are bad, but to be sure we can use a simple voltmeter to check the surface voltage which should be about 12.4 volts with the doors closed ignition switch off. Here is a guide to help you do the test:

https://www.2carpros.com/articles/how-to-use-a-voltmeter

If the batteries test good let's clean the battery cables. here is a guide to help with that repair as well:

https://www.2carpros.com/articles/everything-goes-dead-when-engine-is-cranked

Please run down these guides and report back. Let us know what happens and please upload pictures or videos of the problem.

May 31, 2022 at 12:03 PM
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Repair Safety Notice: This information is for general instructional purposes only. Vehicle repair can be dangerous. Verify all information, follow manufacturer service procedures, use proper tools and safety equipment, and consult a qualified repair shop when needed.