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Home >> Buick >> 2015 >> Regal GS, AWD >> Repair and Diagnosis >> External Pages >> Different variant/trim >> Section 13 (Battery, Charging System And Starting System (12-Volt) - Hybrid (Hp6)) >> Description and Operation >> Charging System Description and Operation >> Battery Sulfation Mode

Battery Sulfation Mode

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The BCM will enter this mode when the interpreted charging system voltage is less than 13.2V for 30 minutes. When this condition exists the BCM will enter Normal Mode for 5 minutes. The BCM will then determine which mode to enter depending on voltage requirements.