NHTSA Service Bulletin 11011781: 2021, 2022 Mercedes-benz Amg G63
Official manufacturer communication context for 2021, 2022 Mercedes-benz Amg G63, with affected products, buyer checks and links into Carchieve recall, problem and VIN research.
Reviewed June 2026 from NHTSA manufacturer communication and service bulletin records. Carchieve is independent and not affiliated with any vehicle manufacturer or government agency.
Mercedes-Benz AG, the manufacturer of Mercedes-Benz vehicles, has determined that on certain Model Year 2021 - 2022 G-Class vehicles, the engine control unit software characteristics may not meet local regulatory requirements for the vehicle's On-Board Diagnostics and/or exhaust gas emissions. Our records indicate that your vehicle is included in the affected population. What is the issue? During low-load operations, the vehicle's air/fuel ratio diagnostic system may not be activated as intended. What will your Mercedes-Benz Dealership do? An authorized Mercedes-Benz dealership will check and, if necessary, update the Engine Control Unit Software. This vehicle repair will be provided at no cost to you. While the minimum repair time can be up to 30 minutes, your dealership can provide you with a better estimate of the overall time for this service visit. As a matter of normal service process, an authorized Mercedes-Benz dealer will also check for other repair measures which might be applicable to your vehicle and this may increase the required working time. You will not be charged for other service or repairs unless so requested. Steps to take. . Find your nearest authorized Mercedes-Benz dealership at mbusa.com/recall to schedule your recall repair. . Please mention you are scheduling an appointment for Mercedes-Benz Emissions Recall Campaign # 2024090003 (CA DMV # 240903) . You may be asked for your VIN, which for your convenience is located at the top of this letter.
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
Buyer checklist
- Run the 17-character VIN and confirm the year, make, model, engine and equipment match the listing.
- Check recall campaign pages for safety actions that may require dealer repair.
- Compare this bulletin with common problem pages for the same model and component area.
- Ask the seller or dealer whether the bulletin procedure, update or inspection has already been completed.
- Use the used-car buying checklist and get an independent inspection.
Frequently asked questions
What is NHTSA service bulletin 11011781?
Mercedes-Benz AG, the manufacturer of Mercedes-Benz vehicles, has determined that on certain Model Year 2021 - 2022 G-Class vehicles, the engine control unit software characteristics may not meet local regulatory requirements for the vehicle's On-Board Diagnostics and/or exhaust gas emissions. Our records indicate that your vehicle is included in the affected population. What is the issue? During low-load.
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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