What are the reasons why the car cannot detect the smart key?

[VonJohn]

The reasons why the car cannot detect the smart key are: 1. The car key battery is dead; 2. Severe signal interference in the surrounding environment; 3. The adjustment unit of the key is damaged; 4. The key code does not match. The functions of the car key are: 1. Press the unlock button once to open only the driver's door, press twice to unlock all four doors; 2. Press the trunk button to open it automatically; 3. Long press the lock button after exiting the car to remotely close the windows. The maintenance methods for the car key are: 1. Avoid frequently placing it with metal items; 2. Do not place the spare key in the car door; 3. Prevent the smart key from dropping or being impacted; 4. Avoid exposing the smart key to high temperatures or contact with liquids; 5. Do not place the key with electronic devices.