2. If it is a manual air conditioner, turn on the air conditioner switch, switch the air conditioner button to the position where the air conditioner light is off, and then turn the hot and cold knob to the red direction to the end.
Precautions for turning on the air conditioner in the car: 1. Don't turn on the heating and air conditioning immediately when the car is hot, and turn on the warm air after the water temperature in the engine water tank rises; 2, there is fog outside the window, to increase the warm wind speed.