Requires Two CR2025 Batteries.
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Learn how to replace your smart key fob battery. It's very simple. If your key looks different, see instructions with pictures for all keys


If you need further instructions visit: http://www.mercedesmedic.com/keybatt...


How to replace your car key remote fob battery on Mercedes Benz A, C, E, S, SL, SLK, CLK, ML, vito