2004 Mercedes SL-Class Owner's Manual - Page 279

Operation Vehicle care Warning G Window cleaning ! Fold the windshield wiper arms away from the windshield to a vertical position only. They could otherwise damage the hood. Turn on the wipers and place them in a vertical position. For information how to position the wipers in a vertical position, see "Replacing wiper blades" ( page 337). Warning Use a window cleaning solution on all glass surfaces. An automotive glass cleaner is recommended. For safety reasons, switch off wipers and remove SmartKey from starter switch before cleaning the wiper blade. Otherwise, the wiper motor might suddenly turn on and cause injury. ! Fold the windshield wiper arm 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. Clean the wiper blade inserts with a clean cloth and detergent solution. ! 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. G For safety reasons, switch off wipers and remove SmartKey from starter switch before cleaning the wiper blade. Otherwise, the wiper motor might suddenly turn on and cause injury. 278