2011 Mercedes R-Class Owner's Manual - Page 131

Windshield wipers Installing the wiper blades 129 The windshield wipers are not working The windshield wiper drive is malfunctioning. X Select another wiper speed on the combination switch. X Have the windshield wipers checked at a qualified specialist workshop. ! Make sure that the wiper blade is installed properly. A wiper blade that has not been properly installed can damage the rear window. Problems with the windshield wipers The windshield wipers are obstructed Leaves or snow, for example, may be obstructing the windshield wiper movement. The wiper motor has been deactivated. X For safety reasons, you should remove the key from the ignition lock. or X Switch off the engine using the Start/Stop button and open the driver's door. X Remove the cause of the obstruction. X Switch the windshield wipers back on. Z Lights and windshield wipers X Place the new wiper blade ; onto wiper arm :. X Hold wiper arm : and press wiper blade ; in the direction of the arrow until it engages. X Make sure that wiper blade ; is seated correctly. X Position wiper blade ; parallel to wiper arm :. X Carefully fold wiper arm : back onto the rear window.