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How to Replace the Key Battery of a Mercedes

Model: Mercedes Mercedes Various
Part: Key

Video tutorial

A key that does not respond to the central locking activation and deactivation commands, unless damaged by impact, certainly has a discharged battery, model CR2032, 3 volts. Let's see how to replace it in this video guide, easily and without using tools: Extract the emergency key from the remote shell, use it to pry open the back of the remote, access the battery compartment, which is covered by a small plastic cover secured with a screw.

Remove this screw, take out the discharged battery, and insert the new one.


Posted on 1 February 2026 by ScegliAuto


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Watch the video!


by ScegliAuto

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