BMW 3 Owners & Service Manuals

BMW 3: Recirculated-air mode


You may react to unpleasant odors or pollutants in the immediate environment by temporarily suspending the supply of outside air. The system then recirculates the air flow within the vehicle.


Press the button.

The LED is illuminated when recirculated- air mode is switched on. The supply of outside air 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 control".

4. "Air quality".

5. Select the desired setting:

  • "Fresh air"
  • "Air recirculation"
  • "Auto-recirculate"

To prevent window fogging, recirculated-air mode switches off automatically after a certain amount of time, depending on the environmental conditions.

With constant recirculated-air mode, the air quality in the car's interior deteriorates and window fogging increases.

If there is window condensation, switch off recirculated- air mode or defog the windows.

Adjusting the air flow manually


The air flow for climate control can be adjusted manually.

General information

To adjust the air flow manually switch off AUTO program first.


Press the lower or upper side of the button: decrease or increase air flow.

The selected air flow is shown on the climate control display.

The air flow may be reduced automatically to save battery power.

Adjusting the air distribution manually


The air distribution for climate control can be adjusted manually.


Press the button repeatedly to select a program:

  • Windows, upper body region, and floor area.
  • Upper body region and floor area.
  • Floor area.
  • Windows and floor area.
  • Windows.
  • Windows and upper body.
  • Upper body region.

The selected air distribution is shown on the climate control display.

SYNC program


The following settings of the driver's side can be transferred to the front-passenger side:

  • Temperature.
  • Air flow.
  • Air distribution.
  • AUTO program.

Switching on/off

Via iDrive:

1. "CAR".

2. "Settings".

3. "Climate control".

4. "Synchronize".

The program is switched off automatically if the settings on the front passenger side are changed.

Defrosting windshield and remove condensation


Ice and condensation are quickly removed from the windshield and the front side windows.

Switching on/off

Press the button.

The LED is illuminated with the system switched on.

The air flow can be adjusted manually with the system switched on.

If there is window condensation, press the button or switch on the air conditioning to utilize the condensation sensor. Make sure that air can flow to the windshield.

Rear window defroster

Press the button. The LED lights up.

The function is available with the engine running.

The rear window defroster switches off automatically after a certain period of time.

Microfilter/activated-charcoal filter

The microfilter removes dust and pollen from the incoming air.

The activated-charcoal filter also removes gaseous pollutants from the outside air that enters the vehicle.

Have this combined filter changed during vehicle maintenance.



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