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How to Replace the Remote Battery on a Mercedes?

Model: Mercedes Mercedes Various
Part: Key

If the battery of the Mercedes SmartKey runs out and needs replacing, but you don't know how to do it, you can follow this quick tutorial that shows all the steps. First, you need to get a replacement battery of type CR2025. Start by removing the emergency metal key using the designated button located at the top. Take the key and insert it into the slot opposite to where it was inserted, as shown in the video. Pressing down, open the rear cover where the battery is located. Replace it, ensuring to respect the polarity.

Updated on 27 April 2026 by ScegliAuto

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