What to Do When a Mercedes Key Runs Out of Battery?

[McElliott]

When a Mercedes key runs out of battery, you can use the mechanical key to open the door. Below is an introduction to replacing the car key battery: Standard Key: The method for replacing the battery in a car key is generally similar. Most remote keys come with a mechanical key, and some keys have the mechanical part folded or hidden. If it's a folding type, after popping out the mechanical key, you can see a latch at the folding position. Use a tool to press the latch, and you can remove the outer shell. Hidden Mechanical Key: The small key can also be used to pry open the key. After removing the outer shell, take out the old button battery and check if the model matches the new one. Then, replace it with a new button battery of the correct specification. Be careful not to install it backwards during replacement.