NHTSA service bulletin

NHTSA Service Bulletin 11011767: 2016-2025 Mercedes-benz A 220

Official manufacturer communication context for 2016-2025 Mercedes-benz A 220, with affected products, buyer checks and links into Carchieve recall, problem and VIN research.

NHTSA service bulletin 11011767 summary graphic for 2016-2025 Mercedes-benz A 220
11011767NHTSA document ID
Manufacturer communicationcommunication type
29affected 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

Complaint <p> After a software update, the MBUX multimedia system (A26/17) may incorrectly display the fault code B19C804 "Software tampering has been detected. There is an internal fault". </p> <p> </p> <p> Note: If there are no relevant customer complaints, then the DTC can be ignored as it does not directly affect functionality. If there is a customer complaint in addition to the above DTC, further diagnostic measures must be performed. </p> Cause The current software release of the MBUX multimedia system (A26/17) Remedy <p>Update the A26/17 to newest available software release.</p><p> </p><p>Note: Do not replace any parts.</p>

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-benzA 2202019-2022Ask for service records and run the exact VIN before purchase.
Mercedes-benzAmg A352020, 2021Ask for service records and run the exact VIN before purchase.
Mercedes-benzAmg Cla352020-2024Ask for service records and run the exact VIN before purchase.
Mercedes-benzAmg Cla452020-2024Ask for service records and run the exact VIN before purchase.
Mercedes-benzAmg Glb352021-2025Ask for service records and run the exact VIN before purchase.
Mercedes-benzAmg Glc432017-2023Ask for service records and run the exact VIN before purchase.
Mercedes-benzAmg Glc632018-2021Ask for service records and run the exact VIN before purchase.
Mercedes-benzAmg Glc63 S2020, 2021Ask for service records and run the exact VIN before purchase.
Mercedes-benzAmg Glc63s2018, 2019Ask for service records and run the exact VIN before purchase.
Mercedes-benzAmg Gle532021-2024Ask for service records and run the exact VIN before purchase.
Mercedes-benzAmg Gle63 S2021-2024Ask for service records and run the exact VIN before purchase.
Mercedes-benzAmg Gls632021-2024Ask for service records and run the exact VIN before purchase.
Mercedes-benzCla 2502020-2024Ask for service records and run the exact VIN before purchase.
Mercedes-benzGlb 2502020-2025Ask for service records and run the exact VIN before purchase.
Mercedes-benzGlc 3002018-2023Ask for service records and run the exact VIN before purchase.
Mercedes-benzGlc 350 E2018, 2020Ask for service records and run the exact VIN before purchase.
Mercedes-benzGlc3002016, 2017Ask for service records and run the exact VIN before purchase.
Mercedes-benzGlc350e2019Ask 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 11011767?

Complaint <p> After a software update, the MBUX multimedia system (A26/17) may incorrectly display the fault code B19C804 "Software tampering has been detected. There is an internal fault". </p> <p> </p> <p> Note: If there are no relevant customer complaints, then the DTC can be ignored as it does not directly affect functionality. If there is a customer complaint in addition to the above DTC, further diagnostic.

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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