Battery Control Switch Module BCSM (4/153) [2017-2022]: Variants

Vehicles with a starter motor 

The battery control switch module BCSM swaps the power consumption between the main battery and another power source during crank. Depending on the vehicle battery configuration, the other power source is either the support battery or the Mid Voltage Battery Module (MVBM) through the Mid Voltage Conversion Module (MVCM). The BCSM will effectively connect/disconnect the batteries from the electrical system.

The battery control switch module BCSM monitors the amount of current being drawn to the starter motor solenoid. A software fuse stops the flow of current to the starter motor if the current is too high.

Vehicles without a starter motor 

The battery control switch module BCSM ensures that the 12 V system is supplied with voltage and current from the 12 V battery.