Jeep 2014 Grand Cherokee Owner's Manual page 221

The vehicle is close to the obstacle when the warning
display shows one flashing arc and sounds a continuous
tone. The following chart shows the warning alert opera-
tion when the system is detecting an obstacle:
Rear Distance Greater than
(in/cm) 79 in (200 cm)
Audible Alert
Chime
Arc
Radio Volume
Reduced
NOTE: ParkSense® will reduce the volume of the radio,
if on, when the system is sounding an audio tone.
WARNING ALERTS
79-39 in
(200-100 cm)
None Single 1/2
Second Tone
None 4th Solid
No Yes
UNDERSTANDING THE FEATURES OF YOUR VEHICLE 219
39-25 in 25-12 in
(100-65 cm) (65-30 cm)
Slow Fast
3rd 2nd
Solid Flashing
Yes Yes
3
Less than
12 in (30 cm)
Continuous
1st
Flashing
Yes