by just flipping the car in reverse and than back to drive will activate the camera . Problem is that even if you would have more physical buttons they not really hardware buttons anymore. Meaning if sensus is frozen or acting slow by pressing defrost or w.e wont work until sensus is ready to process the request. Unlike on older cars even if your screen is blank or frozen you can still activate things by pressing the button.I love Sensus and find it very intuitive when compared to other competitive systems (BMW example).
But I would have definitely appreciated some physical buttons that can be configured with functions chosen by the customer.
For example when approaching in a tight area, I find it very inconvenient and slow to scroll and search for the 360 camera button.