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2002 Mercury Mountaineer Question: What does it mean when the check charging system indicator comes on?

 

Question

Tinsley, 4.0L V6, Dumfries, VA, November 21, 2012, 14:15
 Rookie

My battery level shows a high charge. The truck starts without any problem.

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  • Answer #1

    OIL GEEK November 21, 2012, 15:39
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     Technician

    it could mean the the alternater is not charging anymore.qick way to no is to start truck ten remove the positive from batery if truck stops then it is not charging and you are running on your battery.

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  • Answer #2

    ziptie12 November 21, 2012, 19:32
     Master

    It means to 'have the charging system checked'. Watch with a scan tool for proper command if PCM controled , or with a ampmeter or other suitable testing device. May still be charging at full voltage , just reduced current or voltage, for enough time to trigger the light. Voltmeter may not be accurate.

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