Engine Off Load Shed

The BCM uses the battery monitoring sensor to keep track of the battery state of charge. When the engine is off and the BCM determines the battery state of charge is below 50%, or 45 minutes have elapsed, a load shed message is sent over the CAN. This message turns off the audio/navigation system to save the remaining battery charge. Under this condition the FCDIM (without touchscreen controls) displays System Off to Save Battery Turn Ignition Off, or the FDIM (with touchscreen controls) displays SYSTEM OFF TO SAVE BATTERY PLEASE TURN IGNITION OFF OR START ENGINE to notify the driver that battery protection actions are active.

Engine off load shedding occurs when the engine is not running and the ignition is in the ACC, RUN or delayed accessory position. This load shed state clears once the vehicle has been started and the battery state of charge recovers. If the engine off load shed occurs, the audio/navigation system turns off.

When the ignition is in the RUN position and load shed occurs, the IPC message center may display either TURN POWER OFF TO SAVE BATT (base message center) or TURN POWER OFF TO SAVE BATTERY (optional message center). The audio/navigation system shuts down after the message center displays the warning.

If a fault occurs with the battery monitoring sensor or circuit(s), the only engine off load shed strategy that is active is a 45 minute timer. After 45 minutes have elapsed, the audio/navigation system turns off. To clear the load shed state, restart the engine.

When the ignition is in the OFF position or the ignition key is removed, the infotainment extended play feature can be enabled. When infotainment extended play is enabled and a load shed message is received over the CAN extended play will turn off to save the remaining battery charge. Under this condition FCDIM displays SYSTEM OFF TO SAVE BATTERY to notify the driver that battery protection are active. For more information, Refer to: Message Center - System Operation and Component Description .