What does the mode button in the car mean?

[Phil]

The mode button in the car varies depending on its location: 1. On the steering wheel, it refers to switching between FM radio, AM radio, CD, or USB modes; 2. In the central control panel's air conditioning control area, it refers to switching the air outlet mode of the car's air conditioning. The buttons in the car and their functions are divided into: 1. Fuel tank opening button: remotely opens the fuel tank cap from inside the car; 2. Parking sensor button: turns the car's parking sensor system on or off; 3. Central lock button: controls the vehicle's central door lock; 4. Rear sunshade button: controls the opening and closing of the electric rear sunshade inside the car; 5. Headlight cleaning button: controls the automatic cleaning function of the headlights.