Sunday, October 28, 2018

Electrical - Consumer Shutoff Intermittently Active

Mercedes Benz C 250 4MATIC (204.085) (CAN) V6-2.5L (272.911) Technical Service Bulletin # LI54-10_P-051049 Date: 120405



Electrical - Consumer Shutoff Intermittently Active



Consumer shutoff intermittently active



Topic number LI54.10-P-051049



Version 1



Design group 54.10 Battery, voltage supply, voltage converter



Date 04-05-2012



Validity Model series 169, 245, 204, 207, 212, 216, 221 (as of SA code 809)



Reason for change



Complaint:



- Consumer shutoff intermittently active.



- Head unit and/or other consumers are shut off after a short time.



Cause:



The voltage value transmitted by the battery sensor to the rear signal acquisition and actuation module (rear SAM) via the LIN bus is too low,



causing the rear SAM to shut off consumers.



2010 Mercedes Benz C 250 4MATIC (204.085) (CAN) V6-2.5L (272.911) Page 34



Remedy:



Use diagnosis in the SAM to read out the actual voltage value transmitted by the battery sensor to the rear SAM, and compare it with the voltage



measured directly at the battery using a multimeter.



If a difference> 1V is measurable, the battery sensor must be replaced.

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