Why can't the car start with one key?

[DeLila]

The main reasons why the car cannot start with one key are: 1. The smart key for one-key start is low on battery. The system cannot detect the weak signal emitted by the key. In this case, you should place the smart key on the start button and then press the button to start. 2. Incorrect gear position. For automatic transmission cars, the gear must be in P (Park) or N (Neutral) to start. If it is in R (Reverse) or D (Drive), the car will not start. 3. Dead battery. This could be due to leaving the headlights on for too long or the battery reaching the end of its lifespan. Generally, the battery should be replaced every 2 years. 4. Out of fuel. If the fuel gauge shows below the red line, the car will not start. Also, pay attention to the quality of the fuel.