BMW Z4 Roadster Owner's Handbook Manual page 228

CONTROLS
Automatic air recirculation
control AUC
Principle
Automatic air recirculation control AUC detects
pollutants in the outside air. The supply of out‐
side air is shut off and the interior air is recircula‐
ted.
General
When the system is activated, a sensor detects
pollutants in the outside air and controls shut-off
automatically.
When the system is deactivated, outside air
flows into the interior continuously.
Continuous recirculated-air mode deteriorates
the air quality in the interior and condensation on
the windows increases.
Switching on/off
Via iDrive:
1. "CAR"
2. "Settings"
3. "Climate comfort"
4. "Air quality"
5. "Automatic"
If there is condensation, shut down recirculated-
air mode or remove the condensation, see
page 229.
Recirculated-air mode
Principle
If the air outside the vehicle has an unpleasant
odour or contains pollutants, the supply to the in‐
terior of the vehicle can be shut off. The air inside
the vehicle is then recirculated.
Operation
Press the button repeatedly to call up
an operating mode.
228
Climate
The LED is illuminated when the recirculated-air
mode is switched on. The outside air supply is
permanently shut off.
Via iDrive:
1.
2.
3.
4.
5.
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.
If there is condensation, shut down recirculated-
air mode or remove the condensation, see
page 229.
To adjust the air flow manually
Principle
The air flow for air conditioning can be set man‐
ually.
General
To be able to adjust the air flow manually, first
switch off the AUTO programme.
Operation
Selected air flow is shown on the climate display.
In order to protect the battery the air flow rate is
reduced, if necessary.
Online Edition for Part no. xxx - X/18
"CAR"
"Settings"
"Climate comfort"
"Air quality"
Select the desired setting:
▷ "Fresh air"
▷ "Air recirculation"
▷ "Automatic air recirculation"
Press upper or lower side of button: re‐
duce or increase air flow.