2008 Mercedes CL-Class Owner's Manual - Page 499

Controls in detail Automatic climate control The side windows and/or tilt/sliding sunroof will return to their previous position. You can release button , once the opening procedure has begun. The windows and tilt/sliding sunroof continue opening until they have reached their previous positions. The indicator lamp on the button goes out. The air recirculation mode is deactivated. Residual engine heat and ventilation With the engine switched off, it is possible to continue to heat or ventilate the interior. This feature makes use of the residual heat produced by the engine. The closing of the side windows and the tilt/sliding sunroof can be reversed by again pressing and holding button ,. Convenience closing: Press button , for approximately 2 seconds. The side windows and/or tilt/sliding sunroof will close. You can release button , once the closing procedure has begun. The windows and tilt/sliding sunroof continue closing until they are fully closed. The indicator lamp on the button comes on. The air recirculation mode is activated. Convenience opening: Press button , for approximately 2 seconds. i If you switch on the residual heat function when outside temperatures are high, only the ventilation will be switched on. i A window or tilt/sliding sunroof will only return to its previous position if it has not been moved to another position using the respective window switch or tilt/sliding sunroof switch after it was closed with button ,. A window or tilt/sliding sunroof that has been moved will remain in its current position if button , is used to reopen the remaining windows or tilt/sliding sunroof. i Regardless of the selected air volume, the blower operates at low speed when heating. In case of ventilation the blower operates at higher speed. i How long the system will provide heating depends on the coolant temperature the temperature set by the operator 498