Service bulletin NCU - 2024020012

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

This is to notify you of the Service Campaign Launch to update the Engine Control Unit Software in 51234 Model Year ("MY") 2022- 2023 SL (232 platform). The vehicles will be visible and flagged in VMI as "OPEN" on March 1, 2024. Mercedes-Benz AG ("MBAG"), the manufacturer of Mercedes-Benz vehicles, has determined that on certain MY 2022-2023 SL (232 platform) vehicles, the Engine Control Unit software might not correspond to the current production specifications. As a consequence, the engine fan may run for an excessive amount of time after the vehicle is shut off. MBUSA will conduct a service campaign. An authorized Mercedes-Benz dealer will update the Engine Control Unit software.

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

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

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