NHTSA Service Bulletin 10251181: 2021-2024 Mercedes-benz Amg C43
Official manufacturer communication context for 2021-2024 Mercedes-benz Amg C43, with affected products, buyer checks and links into Carchieve recall, problem and VIN research.
Reviewed June 2026 from NHTSA manufacturer communication and service bulletin records. Carchieve is independent and not affiliated with any vehicle manufacturer or government agency.
Complaint Updating the RAMSES 1.1 module to the latest SW-version E139.4 will lead to an error in the modules vtime and therefore the following possible connectivity issues: Remote Status: The last updated timestamp shown in vehicle status leaf page will have the wrong information. Geofence: Geofence notifications will not be sent when vtime is invalid. Programming of Charge Settings: Updated timestamp in charge settings leaf page will have wrong timestamp. End of charging timestamp would have the wrong information. Status and end of charging are not displayed. Function itself is not affected, only the timestamps are wrong. Pre Entry Climate Control: The last updated timestamp shown in vehicle status leaf page will have the wrong information. Next departure time would be impacted. Function itself is not affected, only the timestamps are wrong. Software-Bug in RAMSES 1.1 Software E139.4. A fix for this issue will be implemented in the next coming RAMSES 1.1 SW E139.5 early 2024.
What this bulletin may mean before buying
Treat this as service research, not a verdict on one car. Before you buy, compare this communication with official recall campaigns, model-level owner complaint patterns, and the exact vehicle’s VIN-decoded specifications. A bulletin can help you ask a seller or dealer sharper questions about software updates, known repairs, warranty extensions and service history.
Affected products listed in this communication
Buyer checklist
- Run the 17-character VIN and confirm the year, make, model, engine and equipment match the listing.
- Check recall campaign pages for safety actions that may require dealer repair.
- Compare this bulletin with common problem pages for the same model and component area.
- Ask the seller or dealer whether the bulletin procedure, update or inspection has already been completed.
- Use the used-car buying checklist and get an independent inspection.
Frequently asked questions
What is NHTSA service bulletin 10251181?
Complaint Updating the RAMSES 1.1 module to the latest SW-version E139.4 will lead to an error in the modules vtime and therefore the following possible connectivity issues: Remote Status: The last updated timestamp shown in vehicle status leaf page will have the wrong information. Geofence: Geofence notifications will not be sent when vtime is invalid. Programming of Charge Settings: Updated timestamp in charge.
Is a service bulletin the same as a recall?
No. A recall is a safety campaign with a required remedy for affected VINs. A service bulletin or manufacturer communication usually describes diagnostic, repair, software, warranty or service information.
How should a used-car buyer use this bulletin?
Use it as a research signal. Compare it with recalls, owner complaints, service records, a VIN report and an independent inspection before buying.
Check the exact VIN before you buy
Model-level pages show public safety patterns. A full VIN report helps confirm the exact vehicle, decoded specs, recall applicability and buyer checks.
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