Chrysler Town & Country 2010 Owner's Manual page 176

UNDERSTANDING THE FEATURES OF YOUR VEHICLE 175
The system will indicate a detected obstacle by showing
three solid arcs and will produce a 1 ⁄ second tone. As the
2
vehicle moves closer to the object the EVIC display will
show fewer arcs and the sound tone will change from
slow, to fast, to continuous.
3
Fast Tone
Slow Tone