Chrysler 300 2018 Owner's Manual page 264

262 STARTING AND OPERATING
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