2009 BMW Z4 Owner's Manual - Page 98

Climate Switching the cooling function on and off The cooling function cools and dehumidifies the incoming air before reheating it as required, according to the temperature setting. This function is only available while the engine is running. The cooling function helps prevent condensation on the windows or removes it quickly. Depending on the weather, the windshield may fog over briefly when the engine is started. The cooling function is automatically switched on along with the AUTO program. AUTO program climate level The climate levels can be used to vary the intensity when the AUTO program is switched on. For example, air flow is adjusted automatically to optimize climate control. When the AUTO program is switched on, you can select the climate level of the AUTO program using the buttons for controlling the manual air flow rate. The selected climate level is displayed by an LED. Convertible program When the hardtop is open, the convertible program is activated as well. In the convertible program, the automatic climate control is optimized for driving with the hardtop 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.< Maximum cooling Maximum cooling is achieved most quickly at outside temperatures above 327/0 6 and when the engine is running. The automatic climate control goes into recirculated-air mode at the lowest temperature. Air flows at maximum rate from the vents for the upper body area. You should therefore open the vents for maximum cooling. Adjusting air flow rate manually Press the left side of the button to reduce air flow. Press the right side of the button to increase it. The air flow rate may be reduced to save battery power. The display remains the same. AUTO program The AUTO program automatically adjusts the air distribution to the windshield and side windows, towards the upper body area, and into the footwell and knee area. The air flow rate and air distribution, in addition to your temperature specifications, will be adapted to outside influences as a result of seasonal changes, e.g. sunlight or window condensation. The cooling is switched on automatically with the AUTO program. 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 the rear window defroster to reactivate the automatic climate control. Switching on/off Press the button. Residual heat Manual air distribution and air flow rate are activated when the AUTO program is deactivated. 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. 96 Online Edition for Part no. 01 41 2 602 116 - © 01/09 BMW AG