NHTSA service bulletin

NHTSA Service Bulletin 11031729: 2014-2018 Mercedes Benz Amg C43

Official manufacturer communication context for 2014-2018 Mercedes Benz Amg C43, with affected products, buyer checks and links into Carchieve recall, problem and VIN research.

NHTSA service bulletin 11031729 summary graphic for 2014-2018 Mercedes Benz Amg C43
11031729NHTSA document ID
Warranty program / extensioncommunication type
25affected product rows
90/100quality score

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

The purpose of this letter is to advise you of additional benefits that Mercedes-Benz is providing to you regarding your vehicle ownership. Whats Included In our continuing efforts to assure the proper performance of Mercedes-Benz products and to enhance the satisfaction of our customers, Mercedes-Benz is extending the warranty of the engine control unit software for fault codes related to the outside temperature sensor for the affected vehicles to a total of 10 years or 120,000 miles (whichever occurs first) from the vehicles original New Vehicle Limited Warranty start date. This addendum to the ECU software coverage applies to the vehicle regardless of ownership. This warranty extension only covers updates of the engine control unit (ECU) software to resolve faults related to the outside temperature sensor. The following vehicles are included:

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 BenzC 300 4matic2018Ask for service records and run the exact VIN before purchase.
Mercedes-benzAmg C432016-2018Ask for service records and run the exact VIN before purchase.
Mercedes-benzAmg Glc432016-2018Ask for service records and run the exact VIN before purchase.
Mercedes-benzAmg Gle432016-2018Ask for service records and run the exact VIN before purchase.
Mercedes-benzC 3002018Ask for service records and run the exact VIN before purchase.
Mercedes-benzC3002015-2017Ask for service records and run the exact VIN before purchase.
Mercedes-benzCla2502014-2017Ask for service records and run the exact VIN before purchase.
Mercedes-benzCls 4002016Ask for service records and run the exact VIN before purchase.
Mercedes-benzCls4002015Ask for service records and run the exact VIN before purchase.
Mercedes-benzE 3002018Ask for service records and run the exact VIN before purchase.
Mercedes-benzE 4002018Ask for service records and run the exact VIN before purchase.
Mercedes-benzE 400 4matic2018Ask for service records and run the exact VIN before purchase.
Mercedes-benzE 400 4matic Cabriolet2018Ask for service records and run the exact VIN before purchase.
Mercedes-benzE 400 4matic Coupe2018Ask for service records and run the exact VIN before purchase.
Mercedes-benzE 400 4matic Wagon2018Ask for service records and run the exact VIN before purchase.
Mercedes-benzE3002016, 2017Ask for service records and run the exact VIN before purchase.
Mercedes-benzE3502015-2017Ask for service records and run the exact VIN before purchase.
Mercedes-benzE4002015-2017Ask 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 11031729?

The purpose of this letter is to advise you of additional benefits that Mercedes-Benz is providing to you regarding your vehicle ownership. Whats Included In our continuing efforts to assure the proper performance of Mercedes-Benz products and to enhance the satisfaction of our customers, Mercedes-Benz is extending the warranty of the engine control unit software for fault codes related to the outside temperature.

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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