Charge Mode
WARNING: This page is about a different car, the 2006 Buick LaCrosse and 2006 Buick Allure. However, it is still accessible from the selected car via links, so may be relevant.
The BCM will enter Charge Mode when ever one of the following conditions are met:
- The headlamps are ON, low or high beam.
- The wipers are ON for more than 3 seconds.
- The electric cooling fans are on high speed for more than 1 minute and either fluid head pressure is greater than 1600 kpa (232 PSI) or engine coolant temperature is greater than 105°C (221°F).
- The rear defogger is ON for more than 1 minute.
- The HVAC front blowers are on high speed for more than 1 minute and estimated battery temperature is greater than 32°C (89°F).
- The estimated battery temperature is less than 0°C (32°F).
- Battery SOC is less than 80 percent.
Once one of these conditions is met, the generator battery control module will set the targeted generator output voltage to a charging voltage between 13.9 volts and 15.5 volts, depending on battery SOC and estimated battery temperature.