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April 18, 2024 Service bulletin

The update of the RAMSES 1.1 module to the SW version E139.4 results in a fault in the vtime of the module...

Mercedes-Benz technical service bulletin LI82.85-P-077312 for 2022-2024 Mercedes-Benz C300, 2023-2024 Mercedes-Benz GLC 300 and 2022-2023 Mercedes-Benz EQS 450 and others.

Bulletin number
LI82.85-P-077312
Component
Electrical system
Summary
The update of the RAMSES 1.1 module to the SW version E139.4 results in a fault in the vtime of the module and therefore to the following possible connection problems: Remote status: The time stamp of the last update that is displayed on the side of the sheet with the vehicle status contains the wrong information. Geofence: Geofence notifications are not sent if vtime is invalid. Programming of charging settings: The update timestamp on the side of the sheet with the loading settings features an incorrect timestamp. The timestamp for the end of the charging process would contain the wrong information. The status and end of the charging process are not displayed. The function itself is not affected; only the timestamps are incorrect. Pre-entry climate control: The time stamp of the last update that is displayed on the side of the sheet with the vehicle status contains the wrong information. The next departure time would be affected. The function itself is not affected; only the timestamps are incorrect. NOTE: The functionality of the eCall system is not affected. RAMSES 1.1 software E139.4. Perform a SW update of the RAMSES 1.1 module to the latest E139.5 software.

Owners of these vehicles have filed 119 complaints in the electrical category.

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