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How to Replace the Key Battery on a Mercedes W203

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

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Video tutorial

The steps to replace the key battery on a Mercedes C-Class model W203 are: -First step: press the button/lever at the end of the key to extract the emergency metal key. -Second step: insert the key into the remote to release the battery housing. -Third step: remove the battery. -Fourth step: insert a CW2032 battery. -Fifth step: reinsert the housing. -Sixth step: reinsert the metal key. Go near the vehicle to test the key's functionality.


Updated on 25 October 2026 by ScegliAuto


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by ScegliAuto

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