How do you replace keyless remote battery on BMW X3?

To replace the keyless remote battery on a BMW X3, first, locate the small slot or indentation on the side of the key fob. Use a flathead screwdriver or a coin to gently pry open the key fob casing. Once open, remove the old battery, noting its orientation, and replace it with a new CR2032 battery. Finally, snap the fob casing back together and test the remote to ensure it’s functioning properly.