How to Replace the Battery in a Mercedes S Key?

1 Answers
Braylen
07/30/25 5:31am
To replace the battery in a Mercedes S key, follow these steps: 1. Press the button on the top of the remote key to remove the mechanical key inside. 2. Insert a tool into the gap of the remote key and gently pry it upward. This will cause a slight opening along the seam. Use the tool to slide downward along this gap to open the back cover of the remote key. 3. After opening the back cover, use a toothpick to remove the old battery. Then, place the new battery into the battery slot. Finally, snap the separated battery cover back into place to complete the battery replacement.
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