What does the MAX button in a car represent?

[McRyder]

"MAX" stands for "maximum." When the MAX button on a car's air conditioning system is activated, it represents the strongest cooling mode. Below are detailed explanations of MAX in cars: 1. After turning on the air conditioning cooling switch (A/C) and then pressing MAX, the air conditioning will enter the strongest cooling mode with the blower operating at maximum airflow. Its purpose is to lower the interior temperature as quickly as possible. 2. In the engine compartment, various fluid reservoirs also have MAX markings. Here, MAX similarly means "maximum" or "highest," sometimes simply denoted by the letter M. 3. The MAX marking on fluid reservoirs indicates the upper limit of the fluid level. The highest point of the fluid level should not exceed the horizontal line corresponding to MAX.