Mercedes Benz C-class (W204) is equipped with several interesting functions. If you press hard, the wipers and the glass washer are turned on. If you press faintly, then only the wipers are included.
Also, if the windshield wipers operate at an average speed in constant mode, a slight pressure on the lever will run 9 cycles of fast cleaning. This is a very important and convenient function, for example, if during rain a car is covered by a stream of water from a series of cars.
