The function of Mercedes Benz W211 battery control module are: Monitors the voltages of (G1) and (G1/7) Monitors alternator voltage (terminal 61) via CAN B Controls auxiliary battery relay (K57/2) Controls consumer prioritization function Optimizes charging of auxiliary battery (G1/7) Notes emergency operation and sets fault codes (CAN communication / DTC’s) Notes emergency operation resulting in IC / MF fault message displays The following schematic shows the Mercedes Benz W211 Read more […]