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Frequently asked questions about cars and motorcycles

How to Replace the Battery in a Smart Key

Model: Smart Smart 451 - Years: 2007, 2008, 2009, 2010, 2011, 2012, 2013, 2014, 2015
Part: Key

See other generations:
Video tutorial

Replacing the battery in a Smart key is a very simple operation that can be done independently, also thanks to our video guide. Start by removing the metal security key located inside the remote.

Simply pull it out. Once the security key is removed, proceed to open the remote. To open the remote, gently lever on the lower right side.

With the remote open, you can remove the microchip and the battery. Insert the new battery and close the remote.


Updated on 14 September 2026 by ScegliAuto


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by ScegliAuto

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