I have a 2011 Cayenne. I had my windshield replaced due to a crack. The body shop replaced the windshield with a replacement Porsche windshield. Ever since I had this done, my intermittent wipers don't work consistently, no matter what speed it is on. It will work sometimes and then it waits long periods before wiping the window when it is raining. Sometimes, I end up pushing the wiper control all the way down to manually wipe the window. Does anyone have any thoughts on this? Please help. Thanks.

 

Is the sensor correctly positioned? Did they use genuine Porsche parts or some after market part?

 

my only thought is the position of the speed. is it in auto or fixed?
do you have it adjusted in the PCM as something differently?