After few minutes i put the gear box in P mode and give it a go: it started but a message saying ” battery convenience functions temporarily unavailable ” was on the dash of the millage and nothing else was going : A/C, Radio, Chairs … When one of my friends put his car diagnostic laptop on my Mercedes, the following errors where found : Battery Energy Control Module – BSG211 (battery energy control module 4 fault codes) : 9051 Consumer shutoff, stage 1 Intermittent 9050 Consumer shutoff, stage 2 Intermittent 9092 Auxiliary battery Intermittent 9071 Auxiliary battery relay Intermittent.Īlso i managed to identify and change the auxiliary battery that was the original Mercedes Benz, and on it had the code 34 04. (dashboard black, engine stopped and the ignition ” dead”). Before my car switched off completely, the radio went on hi volume for 1-2 seconds, all the dashboard lights lighted up (like a Christmas tree) and after that it stopped completely. I was driving one day from home to go to a restaurant when my car entered in some kind of ” LIMP MODE ” that resulted in my car standing still, not moving at all. If you have any questions or comments, please post them below in the comments section.Ī problem that i have with My w211 E-Class 220 CDI from 2005. Connecting the additional battery if necessary (through the battery isolating relay K57/2).Switching off consumers (energy management).The tasks of the battery control module are: The battery control module is installed in the trunk to monitor the batteries (the installation position depends on the equipment. – engaging additional batteries in critical on-board network situations The battery control module (BCM) activates the battery isolating relay (K57/2) if necessary.In this case, you may get an error message: malfunction electrical consumers switched off. Depending on the performance measured for the battery, consumers can be switched off in 2 priorities (switched off using CAN message).The battery control module monitors the operating states and the vehicle’s voltage conditions.
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