Why Can't the Car Key Control Start the Vehicle?

[ElijahMarie]

The reasons why the car key control cannot start the vehicle are: 1. The car key battery is dead; 2. The car's battery is dead, and the key cannot be sensed; 3. There is a problem with the key fob or the sensor module. Precautions for using the car key are: 1. Avoid placing it with electronic devices, as the smart key uses low-intensity radio waves and may not function properly under magnetic interference; 2. Do not throw or drop it carelessly; 3. If the smart key gets wet, open the casing, lay it flat, dry it with a hairdryer, and then take it to a repair shop for inspection; 4. Do not expose the smart key to direct high temperatures; 5. Do not leave the spare key inside the car; 6. Do not use the wrong battery—always use the original battery; 7. Avoid contact with metal objects, as the smart key may malfunction when in contact with metal.