Dodge 2010 Grand Caravan - Owner Manual - Manual (Page 175)

The system will indicate a detected obstacle by showing
three solid arcs and will produce a
1 ⁄
2
second tone. As the
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.
Slow Tone
174 UNDERSTANDING THE FEATURES OF YOUR VEHICLE