The other day my rear wiper went below the rear windshield and onto the paint. (No damage whatsoever, phew!). Then the wiper wouldn't move at all. It seemed like the moter was completely underpowered/worn out. So after looking up prices on the web to see that the motor is ~160 bucks, I decided to see if I could fix the problem. Low and behold the nut under the wiper cap was completely loose! So After rearanging the wiper so to how I like it, I tightened the nut and she works like a champ now.

Hope others see this thread before they go have it serviced and lied too. After I realized the problem, it was a 30 second fix.

 

good one