How to Reset the Service Message on a Mercedes GLA MK1

Model: Mercedes Gla - Years: 2013, 2014, 2015, 2016, 2017, 2018, 2019
Part: Service warning light

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Video tutorial

Let's see how to reset the service light on a Mercedes GLA W156 (MK1). Turn on the ignition and activate the service menu by pressing the "ok" button (on the left side of the steering wheel) and the "telephone" button (on the right side of the steering wheel) simultaneously.

Then use the arrow keys to scroll through the options and select "assyst plus" and then press "ok" to enter.

Select "full service" and then choose "confirm full maintenance" and confirm with "ok". The system may ask you to select the type of oil used. Choose the correct option and confirm.

A message will appear: "maintenance completed?" Select "yes" and then "ok", select "confirm" and then "ok" again. At this point, the display will show "maintenance completed". You can exit the menu or turn off the ignition.

Task completed.

Posted on 20 October 2026 by ScegliAuto

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by ScegliAuto

How to Reset the Service Message on a Mercedes GLA MK1

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