2008 Mercedes S-Class Owner's Manual - Page 382

Controls in detail Windshield wipers Windshield wipers ! Do not operate the windshield wipers when the windshield is dry. Dust that accumulates on a windshield might scratch the glass and/or damage the wiper blades when wiping occurs on a dry windshield. If it is necessary to operate the windshield wipers in dry weather conditions, always operate the windshield wipers with windshield washer fluid ( page 382). ! If anything blocks the windshield wipers (leaves, snow, etc.), switch them off immediately. For safety reasons, stop the vehicle in a safe location and, remove SmartKey from starter switch or turn off the engine by pressing the KEYLESS-GO* start/stop button ( page 346) and open the driver's door (with the driver's door open, starter switch is in position 0, same as with SmartKey removed from starter switch) before attempting to remove any blockage. Remove blockage. Turn the windshield wipers on again. If the windshield wipers fail to function at all in the combination switch position U or V, set the combination switch to the next higher wiper speed have the windshield wipers checked at the nearest authorized Mercedes-Benz Center Switch on the ignition ( page 344). Switching on/off windshield wipers Turn the combination switch to the desired position depending on the intensity of the rain. M Windshield wipers off U Slow intermittent wiping (rain sensor operation with low sensitivity) V Fast intermittent wiping (rain sensor operation with high sensitivity) u Slow continuous wiping t Fast continuous wiping Combination switch 1 Switching on windshield wipers 2 Single wipe Wiping with windshield washer fluid ! If the windshield wipers leave smears on the windshield after the car has been driven through an automatic car wash, then wax or other residue is on the windshield. Shortly after washing the car in an automatic car wash, clean the windshield with windshield washer fluid ( page 382). 381