After washing the car (by hand) and letting it sit overnight... next morning opening the pano roof won't go past "vent" position, doesn't even completely do the vent pop-up.. just a half-hearted semi-popped position. There she stops. Multi-tries on the UI control panel just give an error tone and the slider goes back to "vent". It will close if I move slider to close position. And trying an open again still won't open any wider than a half-vent. Until, I push the pano roof up with a finger to fully pop it up in the vent position. Then I can dial in any % opening, and it will. From then on, will close, vent, and % open to anything I want. Just the initial use is sticky on vent. I've only ever noticed this after washing the car. pano vent only - YouTube It could be something as simple as lube... dunno. Got the call in and we'll see. I also have the rubber o-cord gasket seal detaching at the pano roof, inside the car. Getting a new one of those too.