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How to Reset the Service on the Mercedes GLA

Model: Mercedes Gla MK 1, W156 - Years 2013-2019
Part: Service warning light

To reset the service on the Mercedes GLA, start by turning the ignition to position 1 (instrument cluster on); using the left arrow button (left spoke of the steering wheel), scroll until the vehicle's mileage (trip) appears; press the right spoke button (with the phone icon) and the "ok" button (left spoke) simultaneously until a settings list appears; scroll down with the left arrow until you reach "assyst plus" and press the "ok" button; scroll down to "full service" and press the "ok" button; scroll down to "conf. Full serv." and press the "ok" button; select the type of oil grade used by scrolling down and press the "ok" button; scroll down to "yes" and press the "ok" button; scroll down to "confirm" and press the "ok" button. The message "full service carried out" will appear, and finally, verify that the reset was successful by checking the "assyst plus" status.

Updated on 24 June 2026 by ScegliAuto

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