NHTSA service bulletin

NHTSA Service Bulletin 10244776: 2020-2024 Mercedes-benz Amg C43

Official manufacturer communication context for 2020-2024 Mercedes-benz Amg C43, with affected products, buyer checks and links into Carchieve recall, problem and VIN research.

NHTSA service bulletin 10244776 summary graphic for 2020-2024 Mercedes-benz Amg C43
10244776NHTSA document ID
Manufacturer communicationcommunication type
39affected product rows
39source rows grouped

Reviewed June 2026 from NHTSA manufacturer communication and service bulletin records. Carchieve is independent and not affiliated with any vehicle manufacturer or government agency.

Quick answer

Mercedes me connect services inoperative (me-Call, Remote Status, etc.). Mercedes me services - activation not possible. Notes: - In the quick test, no fault code and no event code is stored in the RAMSES control unit (N112/2). The SIM card may be defective. A defective SIM card can be identified as follows: With XENTRY Diagnosis, open the "ACTUAL values" menu of the RAMSES control unit and read out the values for "EUICC, ICCID, IMEI, IMSI". ACTUAL values in the event of a defect: 1. EUICC:null 2. ICCID: null 3. IMEI: null 4. IMSI: null If all the values for "EUICC, ICCID, IMEI, IMSI" = null, then it is highly likely that the SIM card inside the RAMSES control unit is defective. Recommissioning the RAMSES control unit may rectify the problem. If the problem is still present after the recommissioning, then the RAMSES control unit must be replaced. In this case, please create a TIPS case and forward it to HQ. The part is required for analysis. Information on the return delivery of the module will be communicated via TIPS case.

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

MakeModelModel yearsBuyer note
Mercedes-benzAmg C432020-2024Ask for service records and run the exact VIN before purchase.
Mercedes-benzAmg C632021Ask for service records and run the exact VIN before purchase.
Mercedes-benzAmg C63 S2021-2023Ask for service records and run the exact VIN before purchase.
Mercedes-benzAmg C63 S E2023Ask for service records and run the exact VIN before purchase.
Mercedes-benzAmg Eqe2023, 2024Ask for service records and run the exact VIN before purchase.
Mercedes-benzAmg Eqs2022-2024Ask for service records and run the exact VIN before purchase.
Mercedes-benzAmg Eqs 532022, 2023Ask for service records and run the exact VIN before purchase.
Mercedes-benzAmg S632020, 2021Ask for service records and run the exact VIN before purchase.
Mercedes-benzAmg S652020Ask for service records and run the exact VIN before purchase.
Mercedes-benzAmg Sl432022-2024Ask for service records and run the exact VIN before purchase.
Mercedes-benzAmg Sl552022-2024Ask for service records and run the exact VIN before purchase.
Mercedes-benzAmg Sl632022, 2023Ask for service records and run the exact VIN before purchase.
Mercedes-benzAmg Sl63 S E2024Ask for service records and run the exact VIN before purchase.
Mercedes-benzC 3002021-2024Ask for service records and run the exact VIN before purchase.
Mercedes-benzEqe 350+2023, 2024Ask for service records and run the exact VIN before purchase.
Mercedes-benzEqe 5002023, 2024Ask for service records and run the exact VIN before purchase.
Mercedes-benzEqe3502023Ask for service records and run the exact VIN before purchase.
Mercedes-benzEqe350+2023Ask for service records and run the exact VIN before purchase.

Buyer checklist

  1. Run the 17-character VIN and confirm the year, make, model, engine and equipment match the listing.
  2. Check recall campaign pages for safety actions that may require dealer repair.
  3. Compare this bulletin with common problem pages for the same model and component area.
  4. Ask the seller or dealer whether the bulletin procedure, update or inspection has already been completed.
  5. Use the used-car buying checklist and get an independent inspection.

Frequently asked questions

What is NHTSA service bulletin 10244776?

Mercedes me connect services inoperative (me-Call, Remote Status, etc.). Mercedes me services - activation not possible. Notes: - In the quick test, no fault code and no event code is stored in the RAMSES control unit (N112/2). The SIM card may be defective. A defective SIM card can be identified as follows: With XENTRY Diagnosis, open the "ACTUAL values" menu of the RAMSES control unit and read out the values for.

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.

Get Full Report