E 320 CDI (211.026) L6-3.2L DSL Turbo (648.961) (2005)
Window defrost switch (N22s3)
The temperature is set to "maximum" and the air flow distributed to the defroster and lateral nozzles. All the other flaps are closed.
The blower is controlled depending on the coolant temperature. The function LED in the window defrost switch (N22s3) comes on.