How to Remove the Battery from a Mercedes Key?

[Paula]

Method to remove the battery from a Mercedes key: There is a button on the back of the key. Press this button and slide the back cover forward to open the key. The battery is located in the slot nearby. Below are the precautions for battery replacement: 1. Pay attention to the battery model. Most Mercedes key batteries use the 3V CR2025 model. After opening the slot, remove the old battery and replace it with a new one. 2. For Mercedes keys from 2006 to 2013, first flip open the tab at the rear end of the key to remove the mechanical key. Insert the mechanical key into the slot at the tab position and apply slight force to pop open the back cover. Then remove the old battery, replace it with a new one, close the back cover, and the key battery replacement is complete.

[AriannaFitz]

A few days ago, my Mercedes key ran out of battery, and it was quite simple to replace it myself. There's usually a small gap or button on the back of the key. Use a coin or a small flathead screwdriver to gently pry open the cover—don't use too much force to avoid damaging the plastic. Inside, there's a CR2025 coin cell battery; just pop out the old one. When inserting the new battery, make sure the positive side faces up to avoid malfunction. Press the cover back until you hear a click to ensure it's secure. This battery typically lasts one to two years, and keeping it away from high-temperature areas like pockets can extend its lifespan. You can buy the battery at supermarkets or online—it's cheap and convenient—just make sure you get the right model. After replacing it, test the remote locking function to ensure it works properly and avoid sudden failure when you're out.

[CoraFitz]

As someone who frequently tinkers with small gadgets, changing the battery in a Mercedes key is a piece of cake for me. First, flip the key over and look for a release slot or hidden button. Use a thin blade or a dedicated pry tool to gently wedge into the gap and give it a slight push—the cover will pop right off. Remove the old CR2025 battery, check the polarity markings, and insert the new battery in the same orientation. The whole process takes no more than two minutes, and you can use any handy tool—just avoid using excessive force. If the key is a waterproof model, the cover might be tighter; gently pry from the edges rather than the center. After replacing the battery, if the remote range improves, you’ve succeeded. Here’s a handy tip: regularly replacing the battery prevents car lock mishaps, especially before long trips—it saves money and gives peace of mind.

[OMadeline]

I recently replaced the dead battery in my key myself, and it only took a few simple steps. First, locate the seam on the back of the key and gently pry open the cover using a fingernail or a small pry tool—avoid using excessive force. Inside, you'll find a CR2025 round coin-cell battery. Simply remove the old one and insert the new one, ensuring the positive side faces up and aligns with the slot (don't place it upside down). When closing the cover, press firmly until you hear a click. It's recommended to clean the key before the operation to prevent dust interference. These batteries typically last about two years and are inexpensive whether bought online or in stores. After replacement, test the remote immediately—if it doesn't work, just reseat the cover as poor contact may occur. The whole process is quick and hassle-free, so don't worry about damaging anything.