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My battery light sensor came on so I took my car to autozone to check the battery,it said good battery so what is the problem??

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While you were at the parts store did they perform an alternator output test. If not then the alternator is suspect. A winding could've failed, rectifier bridge(diodes), or the internal voltage regulator(if not in the ECU). Get it tested. that may be your problem Greg. Hope this helps
Brad

Posted on Dec 10, 2012

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The warning light is for the alternator or something in the wiring between the alternator and the battery.
It means the alternator is not charging the battery.

Posted on Dec 10, 2012

  • Greg Suenaka Dec 10, 2012

    Thanks Stephen!!

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