Jeep Grand Cherokee 2020 Owner's Manual page 238

236 STARTING AND OPERATING
The vehicle is close to the obstacle when the instrument cluster display shows one flashing arc and sounds a continuous tone. The following chart shows
the warning alert operation when the system is detecting an obstacle:
Greater than
Rear Distance
79 inches
(inches/cm)
(200 cm)
Audible Alert
None
Chime
Arcs-Left None
Arcs-Center None
Arcs-Right None
Radio Volume
No
Reduced
Front Distance Greater than 47 inches
(inches/cm)
Audible Alert Chime
Arcs-Left
Arcs-Center
Arcs-Right
Radio Volume
Reduced
WARNING ALERTS FOR REAR
79-59 inches 59-47 inches
(200-150 cm) (150-120 cm)
Single 1/2
Second Tone
None None
6th Solid 5th Solid
None None
Yes
WARNING ALERTS FOR FRONT
47-39 inches
(120 cm) (120-100 cm)
None None
None None
None 4th Solid
None None
No No
47-39 inches
(120-100 cm)
Slow Slow
None
4th Solid
None
Yes Yes
39-25 inches
(100-65 cm)
None
None
3rd Flashing
None
No
39-25 inches 25-12 inches
(100-65 cm) (65-30 cm)
Fast Fast
None 2nd Flashing
3rd Flashing 2nd Flashing
None 2nd Flashing
Yes Yes
25-12 inches Less than 12 inches
(65-30 cm)
Fast
2nd Flashing
2nd Flashing
2nd Flashing
Yes
Less than
12 inches
(30 cm)
Continuous
1st Flashing
1st Flashing
1st Flashing
Yes
(30 cm)
Continuous
1st Flashing
1st Flashing
1st Flashing
Yes