
Changing a Battery in a BMW Key Fob involves replacing the depleted battery with a new one to restore the key fob’s functionality. A key fob is a small wireless device that allows you to lock, unlock, and open the trunk of your BMW remotely. It typically consists of buttons for these functions, a small screen that may display information, and a battery that powers the device.
A key fob battery usually lasts several years, but it will eventually need to be replaced. Signs that the battery in your BMW key fob may be dying include: