See also:

DSTC system
The Dynamic Stability and Traction Control system (DSTC) ...

Vehicles equipped with Park Assist
Colored fields (4-one per sensor) indicate distance If the vehicle is equipped with the optional Park Assist system, the distance to an object will be indicated more exactly and colored markers ...

Limitations
Even if a fairly small section of the screen image appears to be obstructed, this may mean that a relatively large area behind the vehicle is hidden and objects there may not be detected until ...