What does the auto switch on the car dashboard mean?

[Charles]

The auto switch in a car refers to the automatic headlight switch, which means the headlights will automatically turn on or off based on the ambient brightness without manual control. Here is some relevant information about automatic headlights: 1. Introduction: Automatic headlights are controlled by a light sensor installed on the car. The headlights automatically turn on when the light dims and turn off when the light brightens. They can also automatically switch between high and low beams during encounters with other vehicles. 2. Principle: The working principle of automatic headlights involves a photosensitive sensor that generates a voltage signal in response to changes in external light. This signal is fed back to the automatic headlight control module, which analyzes the data to determine whether the headlights should be turned on. The system consists of components such as a photoresistor, control module, headlights, and speed sensor.