What does the SYNC button on the car's air conditioner mean?

[Margaret]

SYNC refers to the synchronization button of the dual-zone automatic air conditioning system, and its operation is very simple. Pressing the SYNC button ensures that the air outlets on both sides of the car maintain the same temperature and adjust synchronously. When the air conditioner is turned on, if the temperatures on both sides are set differently, the SYNC function will automatically deactivate. Below are the functions of SYNC: The SYNC button cancels the temperature synchronization between the two sides, allowing independent temperature control for each side. This creates a dual-zone effect where the left side can blow warm air while the right side blows cool air. Whenever the temperatures on both sides differ, the SYNC button will light up. Pressing SYNC again at this point will immediately synchronize the passenger side temperature with the driver's side temperature. If you then adjust the passenger side temperature knob to change the temperature, the SYNC button will light up again. In other words, the passenger side temperature will follow the driver's side temperature changes, but the driver's side temperature will not be affected by adjustments made to the passenger side temperature.