2005 Mercedes C-Class Owner's Manual - Page 226

Controls in detail Power windows i You can also open or close the windows using the SmartKey (summer opening/convenience closing feature) ( page 225). You can close and reopen the windows using the air recirculation button , in the climate control panel ( page 175). Switch on ignition ( page 33). Opening the windows Press switch 1 to 4 to the resistance point. The corresponding window will move downwards until you release the switch. Closing the windows Pull switch 1 to 4 to the resistance point. The corresponding window will move upwards until you release the switch. Warning! Fully opening the windows (Express-open) Press switch 1 to 4 past the resistance point and release. The corresponding window opens completely. Fully closing the windows (Express-close) Pull switch 1 to 4 past the resistance point and release. The corresponding window closes completely. G If you pull and hold the switch up when closing the window, and upward movement of the window is blocked by some obstruction including but not limited to arms, hands, fingers, etc., the automatic reversal will not operate. 224