NHTSA service bulletin

NHTSA Service Bulletin 11000735: 2021 Mercedes-benz S 500

Official manufacturer communication context for 2021 Mercedes-benz S 500, with affected products, buyer checks and links into Carchieve recall, problem and VIN research.

NHTSA service bulletin 11000735 summary graphic for 2021 Mercedes-benz S 500
11000735NHTSA document ID
Manufacturer communicationcommunication type
3affected 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

An MBUX System software update is available for your vehicle that includes functional improvements for route guidance, Apple CarPlay, and Android Auto. An authorized Mercedes-Benz dealer can update the MBUX System software on your vehicle, free of charge. We are dedicated to delivering the best-in-class customer experience, and respect for your time is a top priority. While this software update may take up to 1 hour, your dealer can provide you with a better estimate of the overall time for this visit. Please schedule an appointment to update the MBUX System software on your vehicle by contacting our Customer Assistance Center at 1-800-367-6372, or locate your nearest dealer using the QR code and Find a Dealer section on the website.

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-benzS 5002021Ask for service records and run the exact VIN before purchase.
Mercedes-benzS 5802021Ask for service records and run the exact VIN before purchase.
Mercedes-maybachS 5802021Ask 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 11000735?

An MBUX System software update is available for your vehicle that includes functional improvements for route guidance, Apple CarPlay, and Android Auto. An authorized Mercedes-Benz dealer can update the MBUX System software on your vehicle, free of charge. We are dedicated to delivering the best-in-class customer experience, and respect for your time is a top priority. While this software update may take up to 1.

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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