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Replacing Battery and Key Shell for Mercedes W 203

Model: Mercedes Classe C W203 - Years: 2000, 2001, 2002, 2003, 2004, 2005, 2006, 2007
Part: Key

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Video tutorial

To replace the battery, first remove the metal portion of the key from the remote by activating the release lever next to it. Once removed, use a small screwdriver or similar tool to detach the chrome elements of the shell and disassemble the plastic cover.

Carefully extract the battery and the electronic board by removing it from its mounting pins, taking care not to damage the electronic component.

Once extracted, proceed to reassemble everything by reversing the steps taken earlier. After reassembling the remote, you can insert the metal key, and the job is complete.


Updated on 20 March 2026 by ScegliAuto


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by ScegliAuto

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