That mysterious car button with a circular arrow activates air recirculation, recycling cabin air instead of pulling in air from outside.It helps block unpleasant odors and outside pollution while keeping the cabin comfortable and reducing the load on the A/C.Recirculated air can help the car stay cool more efficiently because already-cooled air is reused.
It’s generally safe, but switching to fresh-air mode periodically helps ventilate the cabin, especially on longer drives…
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