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How to Reset the Service Light on a Mercedes A-Class?

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

Video tutorial

In this tutorial, we will see how to reset the service light on a Mercedes A-Class, a very simple and quick operation to perform only after completing all scheduled maintenance tasks. First, enter the cabin, then turn on the ignition and navigate to the odometer screen.

Next, press and hold both the "Back" button and the selection button, enter the general menu, and select "Workshop." At this point, just enter "Full Service," "Confirm Service," and select the type of oil used.


Posted on 15 October 2026 by ScegliAuto


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How to reset the AdBlue warning light on the Renault Trafic?

If the AdBlue warning light on the Renault Trafic remains on even after refilling with the additive, it is possible that a programming error has occurred in the AdBlue management unit: this unit is located inside the engine compartment and must be removed and disconnected to perform a diagnosis. The unit must then be connected to the appropriate diagnostic tool so that all stored errors can be reset correctly; after the reset, reinstall the unit, ensuring everything functions correctly.

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by ScegliAuto

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