Jeep Cherokee 2014 Owner's Manual page 218

216 UNDERSTANDING THE FEATURES OF YOUR VEHICLE
If an obstacle is detected in the left and/or right rear
region, the display will show a single flashing arc in the
left and/or right rear region and will produce a fast
sound tone. As the vehicle moves closer to the obstacle,
the display will show the single arc moving closer to the
vehicle and the tone will change from fast to continuous.
Slow Tone/Solid Arc
Single 1/2 Second Tone/Solid Arc