NHTSA service bulletin

NHTSA Service Bulletin 10240156: 2019-2023 Mercedes-benz Amg G63

Official manufacturer communication context for 2019-2023 Mercedes-benz Amg G63, with affected products, buyer checks and links into Carchieve recall, problem and VIN research.

NHTSA service bulletin 10240156 summary graphic for 2019-2023 Mercedes-benz Amg G63
10240156NHTSA document ID
Manufacturer communicationcommunication type
2affected product rows
2source 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 The customer may complain of the vehicle not starting after being turned off, a yellow 12v Battery Warning message in the instrument cluster and/or a CEL that upon investigation points towards one or more exhaust flaps not responding. The alternator charging management strategy in the software must be modified. Update the ME control unit software. The software should include 177021216. If the vehicle already has this software, stop and open a TIPS case. If there is no newer software available, stop and open a TIPS case. After updating a sensor rotor adaptation MUST be conducted. Once completed the vehicle can be released to the customer.

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 G632019-2023Ask for service records and run the exact VIN before purchase.
Mercedes-benzG632019, 2020Ask 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 10240156?

Complaint The customer may complain of the vehicle not starting after being turned off, a yellow 12v Battery Warning message in the instrument cluster and/or a CEL that upon investigation points towards one or more exhaust flaps not responding. The alternator charging management strategy in the software must be modified. Update the ME control unit software. The software should include 177021216. If the vehicle.

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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