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Replace the Key Fob Battery on Mercedes A-Class

Model: Mercedes Classe A W176 - Years: 2012, 2013, 2014, 2015, 2016, 2017, 2018
Part: Key

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Video tutorial

Let's see how to replace the key fob battery on a Mercedes A-Class. Take the ignition key and remove the metal key. Once the metal key is removed, insert it into the plastic part of the key to unlock the back.

Use a small screwdriver to extract the dead battery, take a new one (same size and voltage), and replace it. Reassemble the key fob cover by pressing on the key cover until you hear it click into place. Check the key's operation after replacing the battery: press the buttons on the key.


Updated on 29 March 2026 by ScegliAuto


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    Frequently Asked Questions

    • Classe A 2012-2018 - Why is my Mercedes A-Class W176 key not recognized? Read answer

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by ScegliAuto

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