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Home >> Buick >> 2007 >> Lucerne CX >> Repair and Diagnosis >> External Pages >> Different car >> Section 36 (Battery, Charging System And Starting System) >> Description and Operation >> Charging System Description and Operation >> Charging System Operation >> Charge Mode >> Fuel Economy Mode

Fuel Economy Mode

WARNING: This page is about a different car, the 2005 Buick LaCrosse and 2005 Buick Allure. However, it is still accessible from the selected car via links, so may be relevant.

The BCM will enter Fuel Economy Mode when the estimated battery temperature is above 0°C (32°F), the calculated battery current is less than 15 amperes and greater than -8 amperes, and the battery SOC is greater than 80 percent. Its targeted generator output voltage is the open circuit voltage of the battery and can be between 12.56 volts and 13.2 volts. The BCM will exit this mode once the criteria are met for Charge Mode.

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