See also:

The windshield wipers are inoperative
The windshield wiper drive is malfunctioning. Select another wiper speed on the combination switch. Have the windshield wipers checked at a qualified specialist workshop. ...

Important safety notes
WARNING For reasons of safety, have the NECK-PRO head restraints/NECK-PRO luxury head restraints checked at an authorized Mercedes-Benz Center after a rear-end collision. WARNING When p ...

Replacing the windshield wiper blades
Removing the wiper blades •► Remove the SmartKey from the ignition lock or turn it to position 0 (KEYLESS-GO). •► Fold the wiper arm away from the windshield until it engages. •` ...