BMW 318i Owner's Handbook Manual page 88

Defrosting windows
1. Air distribution 1 in position
2. Deactivate the recirculated-air mode 2.
3. Air flow control 3 all the way to the right.
4. Switch on the cooling function 4.
5. Temperature 5 to the right, red.
6. Switch on rear window heater 6 to defrost
the rear window
Ventilation
1 Knurled wheels to open and close the air
outlets continuously
2 Levers for changing the direction of the air-
flow
Ventilation for cooling
Adjust the outlets so that cool air is directed
towards you, e.g. if the car's interior has
become hot.
Draught-free ventilation
Adjust the outlets so that the airflow passes the
occupants without striking their bodies directly.
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Micro-filter
The micro-filter traps dust and pollen in the
incoming air. The micro-filter is changed by
BMW Service during routine maintenance
work.