Replacing windshield wiper blades
The wiper blades help remove water from the windshield and rear window. Along with the washer fluid, they clean the glass and help improve visibility while driving. The windshield and rear window wiper blades can be replaced.
Replacing wiper blades
Raise the wiper arms to the service position. Service position is activated/deactivated via the function view in the center display when the car is stationary and the windshield wipers are not on.
Put the wiper blade in removal position by folding it out from the wiper arm until it clicks.
Press and hold the button on the wiper blade attachment and pull the wiper blade straight out 
, parallel with the wiper arm.Slide in the new wiper blade until it clicks into place.
Fold the blade back toward the arm until it clicks into place. The blade is no longer in its removal position and can once again be moved.
Check to make sure the wiper blade is securely in place.
Press the wiper blade back against the windshield.
Note
The wiper blades are different lengths. The blade on the driver's side is longer than the one on the passenger side.