NHTSA service bulletin

NHTSA Service Bulletin 11030316: 2022-2026 Mercedes-benz Amg C43

Official manufacturer communication context for 2022-2026 Mercedes-benz Amg C43, with affected products, buyer checks and links into Carchieve recall, problem and VIN research.

NHTSA service bulletin 11030316 summary graphic for 2022-2026 Mercedes-benz Amg C43
11030316NHTSA document ID
Manufacturer communicationcommunication type
37affected product rows
37source 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

Complaint No heating output is available during electric driving operation. In conventional (combustion engine) driving operation, full heating output is available. Cause Possible defect in the N33/5 water heater (high-voltage PTC booster heater) Remedy If the N33/5 water heater (PTC booster heater, high voltage) is defective, it must be replaced with the latest part number. Note: Please refer to the information in XENTRY Parts Information and the latest WIS description. For vehicles manufactured before December 2025 with a BorgWarner water heater, the coolant hoses (inlet and outlet) must also be ordered and installed. For vehicles produced after December 2025, only the N33/5 water heater (PTC booster heater high voltage) needs to be replaced.

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 C432023, 2024Ask for service records and run the exact VIN before purchase.
Mercedes-benzAmg C43 4matic2023-2026Ask for service records and run the exact VIN before purchase.
Mercedes-benzAmg C63 S E2024Ask for service records and run the exact VIN before purchase.
Mercedes-benzAmg C63 S E 4matic+2024, 2025Ask for service records and run the exact VIN before purchase.
Mercedes-benzAmg C63 S E Performance 4matic+2026Ask for service records and run the exact VIN before purchase.
Mercedes-benzAmg Cle532024Ask for service records and run the exact VIN before purchase.
Mercedes-benzAmg Cle53 4matic2026Ask for service records and run the exact VIN before purchase.
Mercedes-benzAmg Cle53 4matic Cabriolet2026Ask for service records and run the exact VIN before purchase.
Mercedes-benzAmg Cle53 4matic+2024, 2025Ask for service records and run the exact VIN before purchase.
Mercedes-benzAmg Cle53 4matic+ Cabriolet2025Ask for service records and run the exact VIN before purchase.
Mercedes-benzAmg Glc432024Ask for service records and run the exact VIN before purchase.
Mercedes-benzAmg Glc43 4matic2024-2026Ask for service records and run the exact VIN before purchase.
Mercedes-benzAmg Glc43 4matic Coupe2024, 2025Ask for service records and run the exact VIN before purchase.
Mercedes-benzAmg Glc63 S E2025Ask for service records and run the exact VIN before purchase.
Mercedes-benzAmg Glc63 S E 4matic+2025, 2026Ask for service records and run the exact VIN before purchase.
Mercedes-benzAmg Glc63 S E 4matic+ Coupe2025, 2026Ask for service records and run the exact VIN before purchase.
Mercedes-benzC 3002022-2026Ask for service records and run the exact VIN before purchase.
Mercedes-benzC 300 4matic2022-2026Ask 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 11030316?

Complaint No heating output is available during electric driving operation. In conventional (combustion engine) driving operation, full heating output is available. Cause Possible defect in the N33/5 water heater (high-voltage PTC booster heater) Remedy If the N33/5 water heater (PTC booster heater, high voltage) is defective, it must be replaced with the latest part number. Note: Please refer to the information in.

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