METHOD AND SYSTEM FOR OPERATING IN-VEHICLE AIR CONDITIONER

A method for operating an air conditioner installed in a vehicle is provided. The method includes a step of operating the air conditioner according to an operation instruction for the air conditioner when the operation instruction is received from a mobile terminal of an operator of the vehicle, and a step of displaying a notification related to an operation of the air conditioner on a screen of the mobile terminal while the air conditioner is operated according to the operation instruction, the step being a step in which the notification related to the operation of the air conditioner is continuously displayed on the screen without being deleted by a predetermined operation of the mobile terminal by the operator when the mobile terminal is located outside the vehicle.