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

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

To replace the dead battery in a Mercedes A-Class remote, follow a few simple steps. First, remove the emergency key, then use a screwdriver to pry open the exposed slot. Next, pull out the block containing the battery from the remote. Use the screwdriver to lift the metal tab that holds the battery and remove it. Replace the dead battery with a new compatible one. Reattach the tab and close the remote by reversing the steps, reinserting the emergency key.

Updated on 2 May 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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