Why can't the Nissan Sylphy detect the key with one-key start?

[Malachi]

"The reasons why the Nissan Sylphy cannot detect the key with one-key start include insufficient key battery, key malfunction, and electromagnetic interference. Insufficient key battery: If the key cannot be detected and the one-key start fails, the first thing to check is whether the car key has enough battery. Try replacing the key's battery and then attempt the one-key start again to see if it returns to normal. If it doesn't recover, it could also be due to poor battery contact, and the car key may need to be taken for repair. Key malfunction: You can try using the car's spare key to check if the first key is malfunctioning. If the spare key works, it indicates that the first key has a problem. If the spare key also doesn't work, you need to take the car to a repair shop for inspection. Electromagnetic interference: Analyze whether there are other sources of electromagnetic interference or signal interference. Sometimes, placing a mobile phone near the car key can cause interference, or the car's dashcam may also interfere with the car key. You can place the key in a separate location and try starting the car again. If it still doesn't start, you need to check the transmitter and receiver."