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How to Change the Battery in a Mercedes Key

Model: Mercedes Mercedes Various
Part: Key

In today's video, you will learn how to replace the battery in Mercedes keys. Remove the metal key blade from the key fob. Then, open the plastic cover and take out the battery compartment. Replace the unit with one of the same type, then finish your work, ensuring to test the correct functioning of the device. If everything is okay, you can complete your work. This tutorial applies to keyless keys from the mid-2000s, used across much of the German manufacturer's range. As you have seen, it is a quick operation.

Updated on 26 June 2026 by ScegliAuto

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