You’ve likely seen it: a small icon on your dashboard showing a car with a circular arrow. Most drivers recognize it—but few understand what it actually does. This unassuming button controls your vehicle’s air recirculation system, a simple yet powerful feature that can dramatically improve comfort, air quality, and even fuel efficiency when used correctly.
Whether you’re battling summer heat, stuck in traffic behind a diesel truck, or navigating pollen-heavy spring air, knowing when to engage—or disengage—this function can make every drive noticeably more pleasant.
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