2006 Mercedes SL-Class Owner's Manual - Page 328

Operation Vehicle care Wiper blades Clean the wiper blade inserts with a clean cloth and detergent solution. Cleaning the windows and the wiper blades ! The windshield wipers must be in a vertical position before folding them away from the windshield. They could otherwise damage the hood. Turn on the wipers and place them in a vertical position. For information on how to position the wipers in a vertical position, see "Replacing wiper blades" ( page 397). Warning! ! Fold the windshield wiper arms back onto the windshield before turning the SmartKey in the starter switch. Hold on to the wiper when folding the wiper arm back. If released, the force of the impact from the tensioning spring could crack the windshield. ! The windshield wipers must be in a vertical position before folding them away from the windshield. They could otherwise damage the hood. Never open the hood when the wiper arms are folded forward. Switch on the ignition ( page 36). Turn combination switch to wiper setting II ( page 54). With wiper arms in vertical position, switch off the ignition ( page 36). G For safety reasons, switch off wipers and remove SmartKey from starter switch (vehicles with KEYLESS-GO*: Make sure the vehicle's on-board electronics have status 0) before cleaning the wiper blades. Otherwise the wiper motor could suddenly turn on and cause injury. 327