
Magic Vision Control, available on the 2013 Mercedes Benz SL Roadster, adjusts washer performance to match the season and the driving situation. To prevent snow-and-ice buildup in cold weather, electric heating elements warm both the wiper blades and the fluid. The system also reduces the flow of fluid and sprays the windshield only during downward wiper strokes, keeping occupants dry when the driver puts the top down.