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How to Replace the Key Battery on a Mercedes?

Model: Mercedes Mercedes Various
Part: Key

In this video tutorial, you can see how to replace the flat battery in a Mercedes remote control. This is the latest generation of remotes from the German manufacturer, provided for many recent models. You won't need any special tools, just a replacement battery, model CR2032, 3V. Start by extracting the emergency key by sliding the small top button, and with it, unlock the rear cover by inserting it into the slot indicated in the video. Remove the flat battery and insert the replacement, ensuring the polarity is correct, with the positive side facing you.

Updated on 29 April 2026 by ScegliAuto

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