How to Replace the Key Battery for Sonata 8?

[McReagan]

Method for replacing the Sonata 8 key battery: 1. Flip to the tail end of the key, where there is a push button. Push it upwards, and the internal metal key will pop out. At this point, you can pull out the key. 2. Next, look at the tail end of the key to find a gap. Use a tool to assist in prying it open with slight force, and the outer shell of the key can be opened. 3. After opening the shell, the key is positioned relatively deep inside. Use a thin object to slide in from the side gap and pry upwards to remove the old battery, then replace it with a new one. 4. After replacing the new battery, be sure to check it, ensuring the positive side faces upwards. 5. Once the battery is confirmed to be properly installed, insert the shell back into place and close it, then reinsert the mechanical key.