How to Replace the Battery in a Sonata 8 Key?

[Jim]

After opening the key shell, you can see the battery. Remove the old battery and install the new one correctly. The method to replace the battery in a Sonata 8 key is as follows: 1. Turn to the tail of the key, where there is a push button. Push it upwards, and the metal key inside will pop out. Then, pull out the key. Next, look for a gap at the tail of the key. You can use a tool to assist in prying it open slightly, and the key shell can be opened. 2. After opening the shell, the key may be positioned deep inside and difficult to remove. In this case, you can slide along the side gap and pry upwards to take out the old battery, then replace it with a new one. After replacing the battery, be sure to check that the positive side is facing upwards. Once the battery is securely installed, insert the shell back and cover it, then insert the mechanical key back in.