Mercedes Benz

2020 Mercedes Benz Truck ML 63 AMG Technical Service Bulletin # LI27-57_P-0534962 Date: 120522 A/T - ECO Start/Stop Inoperative, DTC P0944 Stored In TCM ECO start/stop inoperative, fault code P0944 in transmission control unit Topic number LI27.57-P-053496 Version 2 Design group 27.57 Oil pump Date 05-22-2012 Validity NAG2 FEPlus (722.9) with auxiliary oil pump with code B03 up to transmission sequence number 7.248.200 Reason for change Model series 251 deleted because model series 251 does not have ECO start/stop. Complaint: ECO start/stop inoperative, fault code P0944 in transmission control unit. Attachments Cause: Check valve in torque converter housing may be damaged. Leakage between torque converter housing and auxiliary oil pump. May affect transmissions with transmission sequence numbers starting with -07-xxx xxx. Page 54 Remedy: Access via fault code P0944; and perform there the following test according to the instructions: Check the check valve in the torque converter...