2007 Mercedes SL-Class Owner's Manual - Page 404

Practical hints Replacing wiper blades Replacing wiper blades Warning! G ! To avoid damage to the hood: The wiper arms should only be folded forward when in the vertical position. Never open the hood when the wiper arm is folded forward. Placing wiper arms in vertical position 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 replacing a wiper blade. Otherwise the wiper motor could suddenly turn on and cause injury. ! Never open the hood when the wiper arms are folded forward. 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. Do not allow the wiper arms to contact the windshield glass without a wiper blade inserted. Make sure the wiper blades are properly installed. Improperly installed wiper blades may cause windshield damage. For your convenience, we recommend that you have this work carried out by an authorized Mercedes-Benz Center. Wiper blades in vertical position Warning! G Wiper blades are components that are subject to wear and tear. Change the wiper blades twice a year, preferably in the spring and fall. Otherwise the windows will not be properly wiped. As a result, you may not be able to observe surrounding traffic conditions and could cause an accident. Vehicles with SmartKey Turn SmartKey to starter switch position 1 ( page 39). Turn combination switch to wiper setting II ( page 57). With wiper arms in the vertical position, turn SmartKey in starter switch to position 0. Remove SmartKey from starter switch. 403