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How to Open the Mercedes GLA Key Fob?

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

In this tutorial, you will see how to open the key fob of the Mercedes GLA, a very simple operation to perform if you need to replace the flat battery. You won't need any special tools for this. Start by extracting the emergency metal key using the dedicated upper button, then lever in the indicated slot with the tip of the key itself until you unlock the rear cover. At this point, you can remove the old battery and insert the replacement, which should be of type CR2025. Ensure you position it the correct way.

Updated on 13 May 2026 by ScegliAuto

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