What does maxAC mean in BMW 3 Series?

[MirandaRose]

In BMW 3 Series, maxAC refers to activating the maximum cooling mode of the air conditioning system. A/C is the abbreviation for air condition, which can be understood as air control or air regulation. In automobiles, its function can be interpreted as the air conditioning cooling switch. When the A/C light is on, it indicates that the air conditioning compressor is activated, increasing engine load and fuel consumption. When this button is pressed, the air conditioning compressor starts working, and the air blown by the blower becomes cold. Pressing the AC button causes the electromagnetic clutch of the air conditioning compressor to engage, making the compressor rotate with the engine and enter the cooling state. When the A/C button is activated, the vehicle's cooling equipment operates, generating moisture during its operation. Combined with the hot and stuffy environment of the engine compartment, this creates an ideal condition for the growth of mold and bacteria. Over time, the air conditioning system may develop unpleasant odors, such as sour smells. Therefore, it is recommended to turn off the A/C shortly before reaching your destination and increase the fan speed slightly to allow the air to dry out the ducts, making it harder for mold to grow.