2005 Mercedes SLK-Class Owner's Manual - Page 241

Controls in detail Retractable hardtop Unlocked status noticed when stopped Switch on the ignition ( page 35). To lock the retractable hardtop in its fully closed position, push the retractable hardtop switch forward until the retractable hardtop is fully closed. The message Retractable roof closed briefly appears in the multifunction display. or: To lock the retractable hardtop in its fully opened position, push the retractable hardtop switch rearward until the retractable hardtop is fully open. The message Retractable roof open briefly appears in the multifunction display. Warning! Unlocked status noticed while driving To lock the retractable hardtop in its fully closed position, push the retractable hardtop switch forward until the retractable hardtop is fully closed. The message Retractable roof closed briefly appears in the multifunction display. or: To lock the retractable hardtop in its fully opened position, push the retractable hardtop switch rearward until the retractable hardtop is fully open. The message Retractable roof open briefly appears in the multifunction display. G Stop the vehicle and lock the retractable hardtop before continuing to drive. You could otherwise endanger yourself and others. Stop the vehicle and leave the ignition switched on. 241