How to Replace the Battery in a Hyundai Elantra Car Key?

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Steps to replace the battery in a Hyundai Elantra car key: 1. First, use a screwdriver to remove the remote cover. 2. Gently remove the key blade. 3. Insert the screwdriver into the hole indicated by arrow 1 and turn it clockwise as shown to completely separate the two parts of the remote. 4. After opening, remove the battery and detach the circuit board. 5. Finally, replace with a new battery and reassemble in the reverse order of disassembly. Below are the functions of the remote key: 1. Vehicle locator. There is a button on the remote key with a horn symbol; pressing it will trigger the car alarm, effective at a distance of over 40 meters, but use with caution in residential areas or late at night. 2. One-touch window closing. Press and hold the lock button on the remote to automatically close the windows. 3. Automatic trunk opening. Press and hold the trunk unlock button or press it twice in succession to automatically open the trunk.