Can anybody who has a SE tell me how many sensors the front/rear have. A quick look round yesterday while my wife was checking the T-Roc out and I could only see 2 at the front and 2 at the back. My Tiguan has 4 front/back. I wonder if you have to get the "park assist" to get the 4. Unless they are that well camoflaged I didn't see them. Thanks