Jeep 2009 Grand Cherokee - Owner Manual - Manual (Page 151)

The system dimly illuminates the two outer most yellow
LEDs when it is ON and detecting no obstacles. The
following chart shows the warning display operation
when the system is detecting an obstacle:
WARNING DISPLAY DISTANCES
DISPLAY LED OBSTACLE DISTANCE FROM: LED COLOR AUDIBLE SIGNAL
REAR CORNERS REAR CENTER
1st LED 59 in (150 cm) Yellow Yes, Half Second
2nd LED 51 in (130 cm) Yellow None
3rd LED 45 in (115 cm) Yellow None
4th LED 31.5 in (80 cm) 39 in (100 cm) Yellow None
5th LED 25.5 in (65 cm) 33.5 in (85 cm) Yellow None
6th LED 20 in (50 cm) 28 in (70 cm) Yellow None
7th LED 16 in (40 cm) 20 in (50 cm) Red Yes, Intermittent
8th LED 6 in (15 cm) 12 in (30 cm) Red Yes, Continuous
NOTE: The Rear Park Assist system will MUTE the
radio, if on, when the system is sounding an audio tone.
UNDERSTANDING THE FEATURES OF YOUR VEHICLE 149
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