Technical Rear wiper

[Leroypanda]

Do you really have to replace the rear wiper arm with the blade?
Cant see any way to just change the blade.

 

[Herts Hillhopper]

Yes, you can by just the blade... Here's an example, but ECP not the cheapest... https://www.eurocarparts.com/p/bosch-super-plus-specific-wiper-blade-rear-h840-485773580
You remove it by pulling away from the rest of the arm - there are two plastic lugs that are a tight fit but do unclip

Edit: cheaper here Amazon product ASIN B0031GUR6C