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How to Replace the Key Battery in the Mercedes CLA C118

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

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Video tutorial

In this new guide for your Mercedes CLA C118, discover how to replace the battery inside the key. First, locate the metal part on the top and pull it outward to completely remove the physical emergency key. Next, remove the back cover and the protective cap of the battery.

At this point, proceed to remove the dead battery and replace it with a new one. Finally, reposition the protective cap and reattach the previously removed back cover.


Updated on 1 June 2026 by ScegliAuto


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by ScegliAuto

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