What does 'use-with' mean on the air conditioner?
2 Answers
use-with on the air conditioner refers to the forced activation of powerful defrosting, where the air conditioner automatically switches to blowing air towards the windshield and changes to external circulation. Below are the related details: Introduction to external circulation: It means drawing air from outside the vehicle, directing it into the air conditioning system for heating or cooling, and then blowing it out through the vents. External circulation replenishes fresh air and improves the air quality inside the vehicle. Conditions for using external circulation: Turn on external circulation when you feel the air inside the car is stuffy. Using internal circulation during high-speed driving can lead to insufficient oxygen inside the vehicle, causing driver fatigue.
Just a few days ago, I finally figured out the 'use-with' labels in my car. When the air conditioning panel displays a 'use-with' button (e.g., 'use-with AUTO'), it means this function requires the main feature to be activated first. For example, my car has a 'use-with AUTO' button, indicating that after turning on the automatic air conditioning, pressing that key will activate a specific mode (like automatic recirculation switching). Essentially, it's a 'master-slave relationship'—without enabling AUTO first, pressing that button alone won’t trigger any response. Different car models have varying configurations, and German cars often use this design for layered function control. If you accidentally press the wrong button, don’t panic—just hit the AUTO button to reset the system. The answer was actually hidden in the manual; I only confirmed this anti-misoperation design after digging the handbook out of the glove compartment last time.
