Turn the guidelines on or off.
The rear camera view is restricted. You cannot see the corner ends of the bumper or what is underneath the bumper. Its unique lens also makes objects appear closer or farther than they actually are.
Visually confirm that it is safe to drive before backing up. Certain conditions (such as weather, lightning, and high temperatures) may also restrict the rear view. Do not rely on the rearview display, which does not give you all the information about conditions at the rear of your vehicle.