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 use of recirculated-air mode wor‐
sens air quality inside the vehicle and increases
condensation on the windows.
Switching on/off
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.
Recirculated-air mode
Principle
If the air outside the vehicle has an unpleasant
odour or contains pollutants, the air supply to the
interior of the vehicle can be shut off. The air in‐
side the vehicle is then recirculated.
Adjusting
Using the button:
Press the button.
The LED is illuminated when recirculated-air
mode is switched on. The outside air supply is
shut off.
When recirculated-air mode is switched off, fresh
air is directed into the vehicle's interior.
Via iDrive:
1. "CAR"
2. "Settings"
3. "Climate comfort"
4. "Air quality"
5. Select the desired setting:
▷ "Air recirculation"
▷ "Fresh air"
The recirculated-air mode automatically switches
off after a given time depending on the ambient
conditions, to avoid condensation.
Continuous use of recirculated-air mode wor‐
sens air quality inside the vehicle and increases
condensation on the windows.
If there is condensation, shut down recirculated-
air mode or remove the condensation.
Air flow, manual
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.
Adjusting
Press upper or lower side of button: re‐
duce or increase air flow.
The selected air flow is shown on the climate
display.
In order to protect the battery the air flow rate is
reduced, if necessary.
Seite 312
CONTROLS
Air conditioning
312
Online Edition for Part no. 01405A1EA53 - X/20
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