So, while my S is in for routine service, Villa Park (IL) has loaned me a P85+ "ride". VERY different! The UI navigation is different. (Aside from being governed at 80.) Right steering wheel thumbwheel reacts differently to mine. As delivered, click it and instantly pano roof vents, click again, closes it. Huh? The only way to access a different app is to use the button underneath scrollwheel and make a different app "active". Never seen this before. Firmware says 4.5.5, same as mine. Is mine is a "different" mode setting? Other thing odd was as we approached the car yesterday, handles extended themselves, and before we got into the car, wide open pano roof closed all on its own. All else seems to be "normal".