I know i must sound stupid but, how do i change the rear wiper? It wont lift up so i can't change the blade. I've taken the bottom plastic part off. do i have to unscrew anything? I don't think they would make it that hard, but i've tried alot to get the wiper up it just won't go. Plz Help.

 

The wiper snaps onto the arm. It's easier to see and figure out on the windshield wipers. Once you figure out how to remove one of them, the rear is the same way.

Here's instructions from the owners manual.

 

My arm won't move. the part hooked up to the Z right at the bottom. I cant lift the thing up to tilt the blade... sorry if i didnt describe it well.

 

Correct, the rear wiper doesn't lift off the window like the windshield wipers do. You have to work at it to get the rear one off, but practicing on the front ones is a lot easier.

 

There is little room to work but it can still be done. I pushed the locking clip with a small screwdriver.