Why do the car lights stay on after removing the key?

[Clark]

Car lights remaining on after removing the key is due to the delayed shutdown function of the headlights after the vehicle is turned off. Below are the specific details about automatic headlights: 1. Working principle: The sensor consists of electronic components such as photoresistors, which send electronic signals to the ECU to control the turning on or off of the headlights and the switching between high and low beams. When driving into a suddenly dark environment, the headlights will automatically turn on. They will automatically turn off when the light is sufficient. They will also automatically switch between high and low beams during nighttime encounters with other vehicles. 2. Function: Automatic headlights can turn on automatically when the owner forgets to turn them on, eliminating the need to manually switch them on when needed. They can also automatically turn off based on the intensity of light.