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I have a '15 jk, battery light came on this morning on way to work.
It started up, made it home and got the multi meter out and tested battery. It's putting out 14.04 at idle. With engine off battery is reading 12.68.
Any ideas what else would make light come on? All cables and wires are tight on battery end.


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Honestly, I would take it to PepBoys, AutoZone, Advanced Auto or any local shop you trust and have it checked. Voltages can read good, but the battery itself could have a cell issue. Not charging properly or voltage is dropping too low during cranking.
 

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That is NOT a battery light. It is a charging system light meaning some part of your charging system is not performing properly. Check the codes in the system.
 
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