2009 Mercedes SLR McLaren Owner's Manual - Page 198

Controls in detail Open air Synchronizing power windows The power windows must be synchronized each time after the battery has been disconnected if the power windows cannot be fully opened (Express-open) or closed (Express-close) Switch on the ignition ( page 40). Pull the power window switches until the windows are closed. Hold the switches for approximately 1 second. The power windows are synchronized. Opening and closing the soft top Warning! For safety reasons, the soft top can only be opened and closed when the vehicle is stationary. Also for safety reasons, the door windows open automatically if the soft top is not opened or closed completely and a door is open. G To prevent possible accidents, only drive the vehicle with the soft top either completely closed and locked, or fully lowered into its storage compartment. If the soft top does not open or close completely, the soft top hydraulic system is depressurized and the soft top is lowered: after approximately seven minutes when the ignition is switched on after approximately 15 seconds when the ignition is switched off Shortly before the soft top is lowered, a warning will sound and the K symbol and the message Top Lowering appear in the multifunction display. Lock the soft top again before driving any further. Otherwise, the unlocked soft top could open while the vehicle is in motion and cause you to lose control of the vehicle. You or others could be injured as a result. 198