You don't need any special tools or techniques! You need just some new windshield wiper blades!
No parts required.
First grab the windshield wiper blade at the base and lift in a motion directed away from windshield.
Rotate the end piece of the windshield wiper so that the blade faces your direction.
Check the joint of the right edge of the blade; remove it from the blade (It would help if you looked at the blade from the front of the car).
After removing the joint, pull the blade out of its holder.
Insert the new blade by sliding it in the opposite way that you took off the old blade.
Reattach the joint in the opposite way that you took it off the first time.
Return the windshield wiper blade back to its original direction.
And finally, return the windshield wiper to its original position.
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