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Old 10-11-2019, 06:09 AM
robnitro robnitro is offline
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Join Date: Aug 2016
Location: Brooklyn, NYC, NY
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If the battery is not agm, even if it works well the ibs will complain even if coded as flooded. I gave up and got an agm. The flooded battery runs a bit lower resting voltage but whoever programmed the ibs parameters has no clue on what's normal.

To test alternator, use a voltmeter or check voltage in ista. It should be more than 13.8v at idle depending on temperature. Then turn on defrosters, fan max, headlights and see if it stays at that voltage or goes down. If it goes down, alt is weak.
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