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Automotive Glossary

Actively ventilated seats

Actively ventilated seats

Leather-trimmed actively ventilated high-comfort seats are optionally available for the S-Class. Built into the seat cushions and backrest are a number of small fans, which draw in air from underneath the seat. Even if extreme heat has built up inside the car, this air will be perceived as agreeable in temperature because it is slightly below the normal temperature of the skin. The air is distributed evenly across the entire surface of the seat via plastic ducts, an air-permeable fabric and fine perforations in the leather, in this way continuously transferring perspiration moisture away from the passengers. Active seat ventilation can be activated by pressing a button in the door panel. This initially engages the highest of three different speeds, or stages. Three blue LEDs above the switch indicate the currently engaged speed. In order to prevent chilling, the ventilation automatically switches from stage three to stage two after approximately ten minutes, then after a further ten minutes switches to stage one.

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