Ventilation system, function

P83.10-2456-76

Shown on vehicle with code (581) Comfort automatic air conditioning

Function

The ventilation system prevents windows from misting up, provides oxygen to the occupants and ensures that uniform and pleasant temperatures in the interior are reached quickly.

Ventilation is achieved with the support of the blower motor (A32m1) during normal operation, when vehicle is stationary or to increase the air flow. When the air recirculation flap is positioned accordingly, fresh air is admitted over the air inlet in the engine hood into the air conditioner housing.

Depending on the preselection of the air distribution on the AAC [KLA] control and operating unit (N22) (without code (581) Comfort automatic air conditioning) or on the comfort AAC [KLA] control and operating unit (N22/7) (with code (581) Comfort automatic air conditioning) air is routed through air ducts via air outlets into the interior. In air recirculation mode, the blower motor draws in air from the vehicle interior and routes it into the air conditioner housing.

In order to prevent the windows from fogging up, the defroster flaps and the air recirculation flap are closed and the footwell flaps opened completely approx. 2 min after switching off the ignition. After starting the engine, the defroster flaps and footwell flaps remain in this position for approx. 30 s. The air recirculation flap is immediately adjustable.