How The System Works - Buick 2009 Enclave Owner's Manual

URPA uses three color-coded lights to provide distance
and system information.

How the System Works

URPA comes on automatically when the shift lever is
moved into R (Reverse). The rear display will then briefly
illuminate to let you know the system is working.
URPA operates only at speeds less than 3 mph (5 km/h).
If the vehicle is above this speed, the red light on the rear
display will flash.
2-38
The display is located
above the rear window and
can be seen by looking
over your right shoulder.
To be detected, objects must be at least 10 inches
(25.4 cm) off the ground and below trunk level. Objects
must also be within 5 feet (1.5 m) from the rear
bumper. This distance may be less during warmer or
humid weather.
A single beep will sound the first time an object is
detected between 20 inches (0.5 m) and 5 feet (1.5 m)
away. Repeated beeping will occur when you are
closer than 20 inches (0.5 m) from the object.
The following describes what will occur with the URPA
display as the vehicle gets closer to a detected
object:
Description
amber light
amber/amber lights
amber/amber/red
lights/continuous beep
amber/amber/red
lights flashing and
continuous beep
English Metric
5 ft 1.5 m
40 in 1.0 m
20 in 0.5 m
1 ft 0.3 m