What is the meaning of usewith?

[RubyLynn]

usewith refers to activating the defrosting function with the external circulation turned on. Its function is: the air conditioning automatically turns on to blow strong defrosting air towards the front windshield and activates the external circulation to remove fog inside the car. External circulation means drawing air from outside the vehicle, directing it to the air conditioning system for heating or cooling, and then blowing it out from the vents to replenish fresh air and improve the air quality inside the car. The method for cleaning the air conditioning is: 1. Turn off the engine and the fan, and set the air conditioning mode in the intake; 2. Spray freshener into the air conditioning vents and continuously inject los; 3. Start the engine, turn on the air conditioning switch and the fan switch, and set the air conditioning to internal circulation mode; 4. Use a cooling agent in the internal circulation of the intake.