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How to Replace the Key Battery in the Mercedes S-Class W222

Model: Mercedes Classe S W222, MK 6 - Years 2013-2020
Part: Key

The procedure to replace the button battery located inside the key of your Mercedes S-Class W222 (2013-2020) is very simple, and by following this guide, you can complete it in just a few minutes without any difficulty. Let's see how to do it. First, locate the button on the back of the cover and press it to remove the physical emergency key. Next, use this key to easily detach the rear cover. Finally, remove the battery's protective cap and proceed with its replacement.

Updated on 1 July 2026 by ScegliAuto

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