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How to Replace the Key Fob Battery for the Mercedes E-Class W211

Model: Mercedes Classe E W211 - Years 2002-2009
Part: Key

In this video, you will see how to replace the dead battery in a Mercedes-Benz E-Class key fob, model W211. The battery you will need is a 2025, 3V, commonly used in many car key fobs. Start by pressing the button on the top of the key fob to extract the metal key. Now, disassemble the casing using the key or a screwdriver. The compartment containing the battery will come out, and you can replace it with the new one. Reassemble everything and check the key fob's proper functioning. As we have seen, this is a quick operation.

Updated on 26 May 2026 by ScegliAuto

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