Is it okay to lock the car without turning off the air conditioner?

[McMakayla]

There is a certain impact. If you lock the car without turning off the air conditioner, it should not cause the battery to drain, as the power to the air conditioner is cut off after locking. However, since the air conditioner was not turned off before locking the car, the fan switch remains on. The next time you start the car engine, the fan will start directly. Since the fan draws a large current when starting, it will affect the lifespan of the switch contacts and increase the engine load. Therefore, it is advisable to turn off the air conditioner and fan before locking the car. Here are some precautions for using the car air conditioner: 1. Avoid using the air conditioner for too long in a single session: If the temperature inside the car has reached a comfortable level, you can turn off the air conditioner or turn it on again after a while. Prolonged use of the air conditioner can increase the pressure on the condenser, causing wear and tear on the cooling system. Therefore, it is recommended not to use the air conditioner for extended periods. 2. Ventilate by opening the windows: When you first enter the car, open the windows and turn on the external circulation to expel the hot air. 3. Avoid using the internal circulation mode for too long: Internal circulation recirculates air within the enclosed space of the car, leading to a continuous decrease in oxygen levels. Additionally, if the gasoline in the cylinders does not burn completely, unburned carbon monoxide from the engine may leak into the cabin, deteriorating the air quality inside the car and potentially causing harm to the occupants.