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How to Reset the Service Light in a Mercedes-Benz A-Class W177?

Model: Mercedes Classe A W177 - Years: 2018, 2019, 2020, 2021, 2022, 2023, 2024, 2025, 2026
Part: Service warning light

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Video tutorial

Is it time for the scheduled maintenance that was previously performed? Don't worry, you need to check which services are due for the mileage reached, such as engine oil change, spark plugs, timing belt, and so on, and conclude everything by turning off the specified warning light.

For this, turn on the instrument cluster, press the buttons shown in the video on the left side of the steering wheel to access the Menu, select the wrench symbol, then Assyst Plus, Service B, and when prompted to reset, press Ok.


Posted on 26 May 2026 by ScegliAuto


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