Mercedes Benz

Campaign - Update Control Module Software Campaign No. 2012120002 April 2013 Revision Date Purpose A 04/05/13 Revision to work Procedure - 03/28/13 Initial release TO: ALL MERCEDES-BENZ CENTERS SUBJECT: Model 906, Model Years 2010 - 2011 Update Engine Control Module Software This Service Campaign has been initiated because Daimler AG (DAG), the manufacturer of Mercedes-Benz and Freightliner Sprinter vehicles, has determined that humidity can enter the exhaust gas recirculation (EGR) valve which may cause an electrical short circuit. As a result, the feedback signal from the valve to the engine control module (ECM) may fail. As a consequence, the EGR valve may be switched-off and the vehicles will experience a loss of power and enter a limp home mode. In addition, certain software parameters in the ECM may not respond properly to brief control deviations of the EGR valve position. Under certain circumstances, this ECM programming can cause an unfavorable response which can deactivate th...

Campaign - Update Control Module Software Campaign No. 2012120002 April 2013 Revision Date Purpose A 04/05/13 Revision to work Procedure - 03/28/13 Initial release TO: ALL MERCEDES-BENZ CENTERS SUBJECT: Model 906, Model Years 2010 - 2011 Update Engine Control Module Software This Service Campaign has been initiated because Daimler AG (DAG), the manufacturer of Mercedes-Benz and Freightliner Sprinter vehicles, has determined that humidity can enter the exhaust gas recirculation (EGR) valve which may cause an electrical short circuit. As a result, the feedback signal from the valve to the engine control module (ECM) may fail. As a consequence, the EGR valve may be switched-off and the vehicles will experience a loss of power and enter a limp home mode. In addition, certain software parameters in the ECM may not respond properly to brief control deviations of the EGR valve position. Under certain circumstances, this ECM programming can cause an unfavorable response which can deactivate th...