Why does the Volkswagen Lavida still have airflow when the air conditioning is turned off?
2 Answers
Volkswagen Lavida still has airflow when the air conditioning is turned off because the external circulation is turned on, and the temperature control knob adjusts the temperature of the airflow from the external circulation. Working principle of car air conditioning: The car air conditioning refrigeration system consists of a compressor, condenser, liquid storage dryer, expansion valve, evaporator, and blower. These components are connected by copper pipes (or aluminum pipes) and high-pressure rubber hoses to form a sealed system. When the refrigeration system is operating, the refrigerant circulates in different states within this sealed system. Introduction to car air conditioning: The car air conditioning system, abbreviated as car AC, is used to adjust and control the temperature, humidity, air cleanliness, and airflow inside the car cabin to optimal conditions. It provides a comfortable environment for passengers, reducing travel fatigue, and creates favorable working conditions for the driver, playing a crucial role in ensuring safe driving as a ventilation device.
When I turned off the air conditioning in my Volkswagen Lavida, the wind still kept blowing out, which puzzled me at first. After some thought, I realized it's mainly related to the car's ventilation system. Volkswagen models are set by default to keep air circulating, especially when the external circulation mode is on, allowing outside airflow to naturally enter the car even with the AC off. There's also the fan control—if the fan isn't completely turned off or is set to auto mode, it will continue to run at a low speed to prevent condensation and fogging in the ducts. The solution is simple: first, press the AC off button to turn off the system, then turn the fan knob to the lowest setting or completely off; try switching to internal circulation mode to see if the airflow reduces. If it happens right after starting the car, it might be a system initialization bug, which can usually be fixed by disconnecting the battery for a while. If it persists long-term, it's advisable to check for switch wear or wiring issues, but most of the time, it's a minor problem that doesn't affect driving safety, and a simple adjustment can make your drive comfortable again.
