Article in English: This depends on what kind of fob you have. Car key fobs for example typically hold the key when it is not in use. You have to open the key, although in some fobs the key is removable. Either slide the key out or spring it away from the fob.  A fob with a sliding key has a small button on the top. Hold the button down while pulling on the key to remove it. For a fob with a springing key, press the spring button on the fob or pull the key forward to get it out of the way. Flip the key fob over and look for at least 1 screw holding in the plastic. These screws are tiny, so you will need a small Phillips head screwdriver. Rotate the screw counterclockwise to remove it. Work slowly to avoid stripping the screw. Set the screw aside in a safe spot, such as inside a resealable bag or small cup, to avoid losing it. Many, but not all, fobs have a small indentation on the side. Use a small coin or a flat head screwdriver. Push the end into the slot, then turn the object to separate the fob’s halves. Your fob will have a seam around the side edges. This is where the fob’s halves meet. Push the tip of a flat head screwdriver into the seam to separate the halves. Then, lift the screwdriver to pry the cover off. Prying a stuck cover is easier if you use the screwdriver on all of the fob’s sides. Work the blade into the seam in a few different spots to separate the halves.

Summary in Indonesian:
Pindahkan kunci kalau berada di dalam key fob. Buka sekrup di belakang key fob. Puntir koin dalam celah samping, kalau key fob memilikinya. Bongkar penutup key fob kalau tidak memiliki celah.