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How to replace the battery of the Mercedes B-Class car remote control

Model: Mercedes Classe B W245, MK 1 - Years 2005-2011
Part: Key

The car remote control stops working in two cases: when the battery is low, and when it needs to be reprogrammed. Today we will explain how to replace the battery of the Mercedes Class B car remote control in case of malfunction. To change the battery, we need to press the side button on the remote control to remove the top part containing the emergency metal key. Remove the cover of the remote control using a flat-head screwdriver. Remove the battery and insert the new one, keeping the same model, CR 2032, so as not to change the power. Close the cover of the remote control and insert the emergency metal key inside it. Stand in front of the vehicle to test the functioning of the remote control.

Posted on 28 August 2025 by ScegliAuto

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