How to Replace the Battery in an Older Mercedes-Benz G63 AMG Key?
2 Answers
The back of the older Mercedes-Benz G63 AMG key has a button. Press this button and slide the back cover forward to open the key. The battery is located in the adjacent slot. Be sure to note the battery model for the key. Most Mercedes key batteries are model 3V CR2025. After opening the slot, remove the old battery and replace it with a new one. Here is more information about Mercedes keys: 1. Mercedes has used three generations of car keys over the past twenty years. The key design is not related to the vehicle model or series. For example, keys for C-Class, E-Class, and S-Class are essentially the same within the same era, and the battery replacement method is also similar. 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 where the tab was and apply slight pressure to pop open the back cover. Then remove the depleted old battery, replace it with a new one, and close the back cover.
I'm quite familiar with replacing the battery in an old Mercedes G63 AMG key. Last time my car key ran out of battery, it took me a while to figure it out. First, prepare your tools—find something thin and flat like a small screwdriver or a credit card, gently insert it into the key's seam, and slowly pry open the shell. Don’t use too much force, or you might scratch the plastic. Once opened, you’ll see a small round coin battery inside, usually a CR2032 model—just grab a new one from the supermarket. When removing the old battery, pay attention to the positive and negative sides; take a photo to remember the orientation to avoid putting it in backward. Align the new battery correctly, press it gently to ensure good contact, then close the shell and press firmly. Finally, test the remote function by pressing the lock button to see if the light turns on. If it doesn’t respond, reinstall the battery. The whole process takes about five minutes, but be patient—use soft tools to avoid scratching the key. After replacement, the battery should last one to two years. Just make sure to stock the right battery model and don’t buy the wrong one.
