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How to reset the automatic transmission control unit of the Mercedes GLA

Model: Mercedes Gla W156, MK 1 - Years: 2013, 2014, 2015, 2016, 2017, 2018, 2019
Part: Checks and maintenance

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Video tutorial

In this guide, we will see the instructions that will allow us to reset the control unit (ECU) of the automatic transmission of the Mercedes GLA in simple steps. First, get into the vehicle and start the instrument cluster; then press and hold the accelerator pedal for thirty seconds to execute the reset of the automatic transmission control unit, as shown in the video.

At this point, turn off the instrument cluster and start the engine; all that remains is to check the behaviour of the automatic transmission on the road.


Posted on 3 November 2026 by ScegliAuto


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by ScegliAuto

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