Almost every modern vehicle has a small dashboard button showing a car with a curved arrow inside. Many drivers press it occasionally—often without thinking—while others never touch it at all. Yet this modest-looking symbol controls one of the most important comfort and air-quality features in your car: the air recirculation system.
Understanding how this function works, when to use it, and when not to use it can improve cabin comfort, protect your health, enhance fuel efficiency, and even extend the life of your vehicle’s air-conditioning system.
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