2007 Mercedes GL-Class Owner's Manual - Page 521

Practical hints Replacing wiper blades Front wiper blades ! Never open the hood when the wiper arms are folded forward. Fold the wiper arms forward until they engage. Warning! G 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 Light Truck Center. 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 motor could suddenly turn on and cause injury. Warning! G Removing Remove the SmartKey from the starter switch. Vehicles with KEYLESS-GO*: Make sure the vehicle's on-board electronics have status 0 ( page 44). Wiper blades are components that are subject to wear and tear. Replace 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. 1 Wiper blade 2 Cover 3 Attachment 4 Tab 5 Removing Press tabs 4 together and tilt wiper blade 1 to detach tabs 4 on both recesses of attachment 3. Wiper blade 1 is released on one end. Maintaining its tilted position, slide wiper blade 1 out of attachment 3 in direction of arrow 5. ! Do not pull on the wiper blade inserts. They could tear. 520