In this video you can watch my demo on how to properly change the Mercedes Smart Key battery tutorial. It's actually very easy and you can do it yourself - DIY! There is no need to go to a dealership for that. Good for Mercedes Smart Keys from 2009 till present..br br If you have any questions, please leave your comments below.br br Music Credit:br You’re free to use this song in any of your videos, but you must include the following in your video description:br United We Groove by Audionautix is licensed under a Creative Commons Attribution license ( Artist: br Music: www.bensound.combr br Visit: for more details..