Ram Trucks 2012 3500 - Owner Manual - Manual (Page 178)

ParkSense
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Display
When the vehicle is in REVERSE, the warning display
will turn ON indicating the system status.
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 object the EVIC
display will show fewer arcs and the sound tone will
change from slow, to fast, to continuous.
Park Assist System On
Park Assist System Off
176 UNDERSTANDING THE FEATURES OF YOUR VEHICLE