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How to Replace the Battery in the Remote for Mercedes A-Class

Model: Mercedes Classe A W169 - Years 2004-2012
Part: Key

In this video, we will show you how to replace the battery in a Mercedes A-Class key remote. Take your ignition remote and pull out the metal key (located inside). Once the metal key is removed, use a screwdriver to pry open the plastic cover of the remote and press inside. When you hear a click, it means the cover is open. Use a small screwdriver to remove the dead battery, take a new one (same size and voltage), and replace it. Reassemble the key remote cover by pressing on the key cover until you hear it click into place. Check that it functions correctly.

Updated on 2 March 2026 by ScegliAuto

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How to Repair the Key Spring of the Peugeot 207?

Over time, frequent use of the key's flip mechanism in the vehicle, dozens of times a day, inevitably leads to wear of the internal spring. As shown in this video, replacing the spring is quite simple and takes little time. After opening the casing halfway, first position the key, then the spring housing, and finally insert the spring into the previously mentioned housing. Close the casing by rotating it clockwise, ensuring all components fit perfectly, and test the key's flip mechanism.

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