2007 Mercedes SL-Class Owner's Manual - Page 204

Controls in detail Retractable hardtop Unlocked status noticed when stopped Switch on the ignition ( page 39). To lock the retractable hardtop in its fully closed position, press retractable hardtop switch forward ( page 200). or: To lock the retractable hardtop in its fully opened position, pull up on the retractable hardtop switch ( page 200). Warning! Unlocked status noticed while driving Problems when operating the retractable hardtop Several conditions may cause the retractable hardtop to not open, close, or lock properly: The luggage cover in the trunk is not closed. Close the luggage cover in the trunk. The trunk lid is open. Close the trunk lid. The battery voltage is too low. Start engine and let run while opening/closing the retractable hardtop. G Stop the vehicle in a safe location or as soon as it is safe to do so and lock the hardtop before continuing to drive. You could otherwise endanger yourself and others. Stop the vehicle in a safe location or as soon as it is safe to do so. Leave the ignition switched on. To lock the retractable hardtop in its fully closed position, press retractable hardtop switch forward ( page 200). or: To lock the retractable hardtop in its fully opened position, pull up on the retractable hardtop switch ( page 200). 203