[groos]

My 8 yo M3 has radar and it still is active since the yellow radar symbols light up when passing by obstacles. It's also used to figure out obstacles in the front and back and if disabled, the relatively poor cameras on my car would not be able to figure out the distance to the next car in the front.

[hbarka]

That’s your ultrasonic sensors. The millimeter-wave-radar was front only and designed for far focusing out front.

[kube-system]

Yes, for parking obstacles. But their vehicle probably also has radar sensors in the rear corners of the bumper for cross-traffic alert.