NHTSA service bulletin

NHTSA Service Bulletin 10044601: 2011, 2012 Mercedes Benz C-class

Official manufacturer communication context for 2011, 2012 Mercedes Benz C-class, with affected products, buyer checks and links into Carchieve recall, problem and VIN research.

NHTSA service bulletin 10044601 summary graphic for 2011, 2012 Mercedes Benz C-class
10044601NHTSA document ID
Manufacturer communicationcommunication type
8affected 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

XENTRY (MERCEDES): CHECK ENGINE LIGHT (CEL) IS ACTIVATED; STORED IN ENGINE CONTROL UNIT IS VERY FINE LEAK. AUTOMATIC FUEL TANK LEAK TEST SOFTWARE IS SENSITIVE AND CAN PRODUCES AN ERRONEOUS DIAGNOSIS. MODELS 204, 212, 218, 221, 216,AND 166 WITH NO MODEL YEARS LISTED. *PE UPDATE 11/22/13. *PE

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-class2012Ask for service records and run the exact VIN before purchase.
Mercedes BenzE2011Ask for service records and run the exact VIN before purchase.
Mercedes BenzS Class2012Ask for service records and run the exact VIN before purchase.
Mercedes-benzC2502012Ask for service records and run the exact VIN before purchase.
Mercedes-benzC3002011Ask for service records and run the exact VIN before purchase.
Mercedes-benzCl5502011Ask for service records and run the exact VIN before purchase.
Mercedes-benzE3502011, 2012Ask for service records and run the exact VIN before purchase.
Mercedes-benzMl3502011, 2012Ask 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 10044601?

XENTRY (MERCEDES): CHECK ENGINE LIGHT (CEL) IS ACTIVATED; STORED IN ENGINE CONTROL UNIT IS VERY FINE LEAK. AUTOMATIC FUEL TANK LEAK TEST SOFTWARE IS SENSITIVE AND CAN PRODUCES AN ERRONEOUS DIAGNOSIS. MODELS 204, 212, 218, 221, 216,AND 166 WITH NO MODEL YEARS LISTED. *PE UPDATE 11/22/13. *PE

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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