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How to Replace the Key Battery in Mercedes A-Class

Model: Mercedes Classe A W177 - Years 2018-2026
Part: Key

The key is undoubtedly one of the most used components of your car, and periodically, it is necessary to replace the battery inside. Fortunately, the cost of this operation is very low, and it can be done in just a few minutes by following these steps. Press the button located on the back of the cover and remove the key. Hold the same button and slide off the back cover. The battery holder is located on the left side; locate it and remove it using a flathead screwdriver. Now you can take out the old battery and replace it with a new, fully functional one. Insert the holder back into its original position and then do the same with the back cover.

Updated on 4 May 2026 by ScegliAuto

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This video shows where the spare wheel is located in the Peugeot 5008 and how to access it, useful in case of a puncture. As shown, the wheel is not in the usual boot compartment but underneath it, outside the vehicle. To free the wheel, first gather the tools provided, then open the boot, locate the small indicated hatch, and open it. Next, loosen the bolt just released using the large socket wrench enough to lower the wheel to the ground.

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