Dodge 2014 Charger Owner's Manual page 279

UNDERSTANDING THE FEATURES OF YOUR VEHICLE 277
The system will indicate a detected obstacle by showing
three solid arcs and will produce a one-half second tone.
As the vehicle moves closer to the obstacle, the EVIC
display will show fewer arcs and the sound tone will
change from slow, to fast, to continuous.
3
Fast Tone
Slow Tone