# Service campaign NCU \- 2025040004

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.

- Type: Service campaign
- NHTSA id: 11017220
- Published by NHTSA: 2025\-04\-24
- Manufacturer's number: NCU \- 2025040004
- Manufacturer's date: 2025\-04\-17
- NHTSA component: ENGINE; ELECTRICAL SYSTEM

## NHTSA's summary

Mercedes\-Benz AG, the manufacturer of Mercedes\-Benz vehicles, has determined that on certain subject vehicles, the engine control unit software may not correspond with current production specifications. There is a possibility that the dynamic driving profile may not be accurately calculated, which could possibly lead to an unsuccessful diagnostic routine for the lambda sensors. 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)](https://static.nhtsa.gov/odi/tsbs/2025/MC-11017220-0001.pdf)
- [If that address does not open, try this one](https://static.nhtsa.gov/odi/tsbs/2025/MC-11017220-9999.pdf)

The document is the manufacturer's. This site does not hold it.

## Components

Electrical system, Engine

## Vehicles listed

- 2023 to 2024 MERCEDES\-BENZ AMG C43
- 2023 MERCEDES\-BENZ AMG C43 4MATIC
- 2023 MERCEDES\-BENZ AMG C63 S
- 2023 to 2024 MERCEDES\-BENZ AMG C63 S E
- 2023 to 2024 MERCEDES\-BENZ AMG SL43
- 2024 MERCEDES\-BENZ AMG SL53E
- 2023 MERCEDES\-BENZ AMG SL55
- 2023 MERCEDES\-BENZ AMG SL55 4MATIC\+
- 2023 MERCEDES\-BENZ AMG SL63
- 2024 MERCEDES\-BENZ AMG SL63 S E
- 2023 to 2024 MERCEDES\-BENZ C 300

JSON: [/v1/bulletins/11017220](/v1/bulletins/11017220)

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