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Replacing the Key Battery of the Mercedes ML

Model: Mercedes Classe M W164 - Years 2005-2011
Part: Key

How to disassemble the key of the Mercedes M to replace the battery? Disassemble the working key and replace the battery inside. Take your ignition key and move the key fob release button. Pull the key out from inside the key cover. Use the key to pry between the two plastics until the battery cover flap separates. Extract the flat battery with a screwdriver and take a new one of the same size and voltage. Reattach the flap over the key fob cover until you hear it click into place.

Updated on 16 April 2026 by ScegliAuto

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