Do it yourself
Frequently asked questions about cars and motorcycles

Replacing the Key Battery on Mercedes Cars

Model: Mercedes Mercedes Various
Part: Key

Video tutorial

By pressing the appropriate button on the remote, extract the manual key from it. Now, using the key or, even better, a small flat screwdriver, pry inside the tab while simultaneously pulling it with a fingernail. This tab corresponds to the small internal seat where the battery is located.

As shown in the video, by performing this step, you will be able to extract this seat and replace the battery. Proceed in reverse by reinserting everything in its place, thus reassembling the remote.

As you can see, this is a small maintenance task that is within everyone's reach.


Updated on 26 April 2026 by ScegliAuto


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