deteriorate.
Fresh air and defrost settings can help remove excess moisture.
For safe driving, maintaining clear windows should take priority
over keeping recirculation switched on.
Why Fresh Air Matters
use of recirculation can increase carbon dioxide levels inside a vehicle, particularly when several people are present. This does not mean that the cabin suddenly runs out of oxygen, but stale air and rising carbon dioxide can contribute to discomfort, drowsiness, or headaches in some circumstances.
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Switching to fresh-air mode periodically can improve ventilation, especially during longer journeys or when several occupants are inside the vehicle.
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Winter
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