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How to Replace the Key Battery in Your Smart 451

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

See other generations:
Video tutorial

The steps required to replace the battery in your Smart 451 key are few and simple. Let's discover what they are. First, obtain a standard flat-head screwdriver.

Insert it into the lower area of the cover and apply a slight upward force to fully open the cover. Once this is done, locate the exhausted battery and proceed with the actual replacement (ensuring the new battery is compatible with your key model).

Finally, reassemble the cover and you're finished.


Updated on 8 July 2026 by ScegliAuto


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by ScegliAuto

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