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How to Reset the Service in the Mercedes GLS?

Model: Mercedes Gls X166 - Years 2013-2019
Part: Service warning light

In this tutorial, we will see how to reset the service in the Mercedes GLS, an extremely simple and quick operation to perform only after completing all scheduled maintenance work. Start by entering the cabin, then turn on the instrument cluster and navigate to the screen showing the odometer. Next, press and hold both the call button and the "OK" button; in the menu that appears, enter "ASSYST PLUS", "Full Service", and perform the reset by selecting the "Conf. Full Serv." option. To complete the procedure, simply restart the vehicle.

Posted on 17 February 2026 by ScegliAuto

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