BMW M4 COUPE Owner's Handbook Manual page 173

▷ LED off: ambient air is constantly entering
the car.
▷ LED on, recirculated-air mode: the ambient
air supply is permanently shut off.
The recirculated-air mode automatically
switches off after a given time depending on
the ambient conditions, to avoid condensation.
Continuous recirculated-air mode deteriorates
the air quality in the interior and condensation
on the windows increases.
In the event of condensation, switch off the re‐
circulated-air mode and increase the air flow if
necessary.
Adjusting the air flow manually
Principle
The air flow for air conditioning can be set
manually.
Operation
Press left or right side of button: re‐
duce or increase air flow.
The air flow of the air conditioning system is
reduced as necessary to save the battery.
Adjusting the air distribution manually
Principle
The air distribution for air conditioning can be
set manually.
Operation
Turn the wheel to select the de‐
sired programme or the desired
intermediate setting.
Online Edition for Part no. 01402981699 - VI/17
Air conditioning
▷ Windows.
▷ Upper body area.
▷ Windows, upper body area and footwell.
▷ Footwell.
Defrosting windows and removing
condensation
Perform the following settings to defrost the
windows and remove condensation:
▷ Direct the air distribution onto the win‐
dows.
▷ Increase the air flow.
▷ Increase the temperature.
▷ Switch on the cooling function if needed.
Rear window heating
Press the button. The LED is illumina‐
ted.
The rear window heating is switched off auto‐
matically after a certain period of time.
Microfilter
In outside and recirculated-air mode, the mi‐
crofilter filters dust and pollen from the air.
Have this filter replaced during maintenance,
see page 229, of the vehicle.
Controls
173