How to Open a Mercedes Key to Replace the Battery?

1 Answers
GenevieveLynn
07/29/25 8:00pm
To open a Mercedes key and replace the battery, follow these steps: 1. Flip to the back of the key and push the button to pull out the mechanical key; 2. Use a flathead screwdriver to pry open the gap at the back of the key, and the outer shell will open; 3. Remove the old battery and replace it with a new one; 4. After confirming the battery is properly installed, close the outer shell and reinsert the mechanical key. Mercedes models include: Mercedes GLS, Mercedes GLE, Mercedes GLC, Mercedes GLA, Mercedes CLA, etc. Taking the 2021 Mercedes GLS as an example, it is a mid-to-large-sized car with dimensions of length 5214mm, width 1956mm, height 1823mm, and a wheelbase of 3135mm.
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