Check and see if the 4 bolts holding the wiper motor have not rattled loose. It's common and just need tightening. I think it is a 10mm bolt. You will have to remove the plastec air dam. Shouldn't take longer than ten minutes and it is held down with plastic twist clips.

If the bolts rattle loose on the wiper motor it wil block the wiper from moving.

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2010 X5M /// R63 AMG...Wifey's 540HP Family Hualer

2001 X5 3.0i Sport 335,448 miles & counting...
SMG M3 Steering wheel
E46 Stainless Racing Headers
4.6is Exhaust
Turner Pulleys
Afe Intake
Brembo drilled rotors
PowerFlex Bushings
Hualingan
30mm H&R Spacers rear
20mm H&R Spacers front
Bavarian Autosport High-Performance Coils
Active Autowerke's Performance Software