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How to Reset the Service Warning on a Mercedes S-Class

Model: Mercedes Classe S W221, MK 5 - Years: 2005, 2006, 2007, 2008, 2009, 2010, 2011, 2012, 2013
Part: Service warning light

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Video tutorial

In this guide, discover the instructions to reset the maintenance warning light (service) on a Mercedes S-Class. First, get inside the vehicle and turn on the ignition; then press and hold the "ok" button and the call button to enter the service menu, as shown in the video.

At this point, select "assyst plus" and then go to full service, registering the new maintenance interval in the history; verify the correct reset of the service!


Posted on 27 February 2026 by ScegliAuto


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On the instrument cluster of the MG ZS, the tire pressure light that appears can be reset by inflating the tires to the correct pressure: this value will be indicated on the sticker attached to the driver's door pillar. Once the tires have been properly inflated, you can turn on the instrument cluster and navigate through the menu until you find the option that indicates tire pressure: if this screen shows the new values, the light will turn off; otherwise, you will need to drive for a few miles so that the sensors can read the new values and turn off the light afterward.

Watch the video!


by ScegliAuto

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