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How to Replace the Key Battery for the Mercedes Benz S-Class

Model: Mercedes Classe S W223 - Years 2020-2026
Part: Key

Replacing the key battery for a Mercedes Benz S-Class, model W223, is a very simple task. First, extract the emergency metal key by pressing the silver button located on the back of the key. Next, open the remote into two parts using a screwdriver or the key itself to pry it open. Once opened, remove the battery cover in the same manner. The third step is to remove the old battery and insert a new one, then complete the replacement by closing the remote.

Updated on 20 August 2026 by ScegliAuto

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