Emissions NCU - 2025020002

A bulletin is a manufacturer's communication to its dealers, as NHTSA indexes it. The summary is NHTSA's. The document is the manufacturer's: read it at NHTSA. A bulletin is not a recall, and listing a model year does not mean every vehicle of it is concerned.

NHTSA's summary

Mercedes-Benz AG, the manufacturer of Mercedes-Benz vehicles, has determined that on certain Model Year (“MY”) 2023 – 2025 S-Class (223 platforms) vehicles, a fault code would not be cleared and persist in the permanent memory (Mode$0A) of Drivetrain Control Unit along with the illumination of the check engine Malfunction Indicator Lamp (MIL) due to a repair of the starter line after a break/failure. This issue has no impact on exhaust emissions and fuel consumption. MBUSA will conduct an Emission Service Campaign. An authorized Mercedes-Benz dealer will update the drivetrain control unit software on the affected vehicles. Affected customers will be notified via First Class letter to have the update performed on their vehicle.

The document

• NHTSA's copy of the document (PDF)
• If that address does not open, try this one

The document is the manufacturer's. This site does not hold it. NHTSA files a document at one of these two addresses; we have not asked NHTSA which.

Components

Electrical system, Transmission and driveline

Listing a model year does not mean every vehicle of it is concerned: the document says which.

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