2005 Mercedes SL-Class Owner's Manual - Page 196

Controls in detail Power windows Opening the windows Press switch 1 or 2 to the resistance point. The corresponding window will move downwards until you release the switch. Closing the windows Pull switch 1 or 2 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 or 2 past the resistance point and release. The corresponding window opens completely. i If the hardtop is open, the respective rear window will open automatically as soon as the front window is completely open. Opening the rear windows if the hardtop is closed: Open the front window. Press switch 1 or 2 to the resistance point again. The corresponding rear window will open completely. G i If the hardtop is open, the respective rear window will open automatically as soon as the front window is completely open. 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. Closing the rear windows if the hardtop is closed: Close the front window. Pull switch 1 or 2 to the resistance point again. The corresponding rear window will close completely. 194