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How to replace the battery in the key remote of the Mercedes CLA

Model: Mercedes CLA C118, X118 - Years: 2019, 2020, 2021, 2022, 2023, 2024, 2025
Part: Key

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Video tutorial

We will briefly discover the instructions that will allow us to disassemble and replace the battery of the Mercedes CLA key remote. First, let's take our remote in hand and start removing the plastic back cover by pressing on the small back button; then, using a thin tool, we remove the battery tray located on the side, as shown in the video.

At this point, we remove and replace the battery with a new one of the correct type and with the same code; let's insert it in the correct direction and reassemble the remote.


Posted on 15 January 2026 by ScegliAuto


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Watch the video!


by ScegliAuto

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