2009 BMW M3 Owner's Manual - Page 100

Climate switched on. In the Convertible program, the automatic air conditioning system is optimized for driving with the top open. In addition, the air flow rate is increased as vehicle speed increases. The effectiveness of the Convertible program can be enhanced considerably by installing the wind deflector.< the system automatically switches back to outside air supply. > Right-hand LED on, recirculated-air mode: the supply of outside air is permanently shut off. The system then recirculates the air currently within the vehicle. If condensation starts to form on the inside window surfaces during operation in the recirculated-air mode, you should switch it off while also increasing the air flow rate as required. The recirculated-air mode should not be used continuously for lengthy periods, otherwise the quality of the air inside the car will gradually deteriorate.< Adjusting air flow rate manually Press the left side of the button to reduce airflow. Press the right side of the button to increase it. You can reactivate the automatic mode for the air flow rate with the AUTO button. The air flow rate may be reduced or the blower may be switched off entirely to save on battery power. The display remains the same. Via the button on the steering wheel You can switch quickly between the recirculated-air mode and the previous mode using an individually programmable button on the steering wheel, refer to page 50. Switching the system on/off With the blower at its lowest setting, press the left side of the button to switch off the automatic climate control. All displays are cleared except for the rear window defroster if it is switched on. Press any button except REST or rear window defroster to reactivate the automatic climate control. The recirculated-air mode is switched on when you switch off the automatic climate control. If the air quality deteriorates or the window fogs over, switch the system back on and increase the air volume.< Residual heat The heat stored in the engine is used to heat the passenger compartment, e.g. while stopped at a school to pick up a child. The function can be switched on when the following conditions are met: > Up to 15 minutes after the engine has been switched off > While the engine is at operating temperature > As long as battery voltage is sufficient > At an outside temperature below 77 7/ 25 6 The LED is lit when the function is on. As of radio readiness, you can set the interior temperature, the air flow rate and the air distribution. Automatic recirculated-air control AUC/Recirculated-air mode Switch on the desired operating mode by pressing this button repeatedly: > LED off: outside air flows in continuously. > Left-hand LED on, AUC mode: a sensor detects pollutants in the outside air. If necessary, the system blocks the supply of outside air and recirculates the inside air. As soon as the concentration of pollutants in the outside air has decreased sufficiently, 98 Online Edition for Part no. 01 41 2 600 999 - © 08/08 BMW AG