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How to Reset the Service Light on Mercedes A 180 CDI

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

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To reset the "service" light on the Mercedes A-Class, follow this simple procedure: insert the key and turn on the ignition while keeping the engine off. Use the steering wheel buttons to select the odometer display. Press and hold the call accept button and the "ok" button on the left side of the steering wheel simultaneously.

At this point, a secret menu will open; from here, select the "assistant plus" option and press "ok", then select "general maintenance" and confirm with "ok". Finally, to exit, press the back arrow button to return to the main menu.


Updated on 23 May 2026 by ScegliAuto


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