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How to Replace the Key Battery of a Mercedes A-Class

Model: Mercedes Classe A W169 - Years: 2004, 2005, 2006, 2007, 2008, 2009, 2010, 2011, 2012
Part: Key

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Video tutorial

Start by pressing the button located at the top of the key fob for your Mercedes A-Class, which will open the physical key. Next, you need to pry off and remove the back cover of the key. Once you have removed the back cover, you will access the dead battery of the key. Proceed by extracting the battery from its compartment, and the disassembly will be complete.

To install the new battery and close the key, simply reverse these instructions, and you will have finished the replacement.


Updated on 12 April 2026 by ScegliAuto


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How to reset the tyre pressure warning light on the Kia Niro EV?

To reset the tyre pressure warning light on the Kia Niro EV, inflate the tyres until they reach the correct pressure value. This value is indicated on the sticker attached to the driver's door pillar. Once the tyres are inflated, turn on the instrument cluster to check that the warning light has completely disappeared from the display. If it is still present, you may need to drive for a few miles to ensure it disappears completely from the screen.

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by ScegliAuto

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