Mercedes Key Fob Battery Change Replacement Black Key by MercedesMedic.com

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
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Get instructions with pictures as well.
How to replace your car key remote fob battery on Mercedes Benz A, C, E, S, SL, SLK, CLK, ML, vito

[@sudevjoshi78]

Worked perfectly and saved me from a stressful situation. Thanks a lot very much appreciated