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How to activate the alarm and set other modifications on the onboard computer of the Mercedes Benz GLA.

Model: Mercedes Gla MK 1, W156 - Years 2013-2019
Part: Onboard computer

Today we will explain how to activate the alarm and set the changes on the onboard computer of the Mercedes GLA. Let's turn on the instrument panel and the onboard computer. From the onboard computer, we select the option related to consumption display so that we can set it to show kilometers. After that, we go back and enable the option to see the vehicle's consumption directly on the display. To activate the alarm, we need to go to the settings section and select the security option. To set the Start & Stop system, we need to press the button on the central dashboard.

Posted on 18 December 2025 by ScegliAuto

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