Jeep Cherokee Owner's Manual page 233

UNDERSTANDING THE FEATURES OF YOUR VEHICLE 231
show the single arc moving closer to the vehicle and the
sound tone will change from slow, to fast, to continuous.
If an obstacle is detected in the left and/or right rear
region, the display will show a single flashing arc in the
3
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.
Single 1/2 Second Tone/Solid Arc