Replacing the Battery in a New Mercedes-Benz Key
2 Answers
Replacing the battery in a new Mercedes-Benz key involves the following steps: 1. First, locate the sliding switch on the car key and slide it to open the mechanical key. 2. Pull out the mechanical key. 3. After removing the mechanical key, you can see the inside of the car key. Insert the metal key to pry open the car key cover. 4. Then remove the old battery. 5. Insert the new battery and close the car key cover. Notes: 1. Do not apply too much force when the mechanical key is facing downward, as this may break the cover latch. 2. Pay attention to the battery's positive and negative terminals when installing the new battery.
I also encountered the issue of replacing the Mercedes key battery before. When the remote response slowed down while using the new Mercedes, I realized the battery was dead. This type of key usually has a small slider or latch on the back cover. Gently pushing it open reveals the battery slot, and a CR2032 battery is all you need. I found a video tutorial online and followed it—it was quite simple and took just a few minutes. Avoid using off-brand batteries; last time I tried a cheap one, it failed shortly after. Original or well-known brands last much longer. I usually test the key from a distance every month to avoid the embarrassment of being locked out while out. If the key is accidentally dropped, it might affect the battery contacts—just cleaning them should fix it. Overall, replacing it yourself saves time and money, but being gentle to avoid damaging the shell or parts is crucial. Keeping a spare battery in the car for emergencies is also a good habit.
