Re: New windscreen. Wiper rain sensor fault
Just wanted to add my recent experience with this issue.
I had my windshield replaced with OEM on August 19th by a non-dealer. The new windshield was OEM/Mopar brand. After replacment, I got the same "one wipe" at start and searching on the interwebs pointed to an error in rain sensor module. Drove in rain 2 weeks after replacement and it was not as sensitive as it was earlier.
Called the installer who came and tested it again. they basically told me that I need to get it "re-calibrated" at the dealership. I took it to the dealership and they said the sensor was stuck in "open" position. They replaced the sensor and it works great now. No more "one wipe" at starts.
The dealership did not mention anything about the sensor "learning" after a few days, etc. Nor did they say that it needed calibration. All they did was plug the Jeep to the Chrysler computer and it pulled the error code and perhaps, the recommendation was to replace the sensor.
Hope this helps...
2012 Jeep Grand Cherokee Limited
2008 Porsche Cayenne S
2002 Aprilia SL1000R
2000 Porsche Boxster (Sold)
1998 Jeep Grand Cherokee SE (Sold and still missed)