Buick Lucerne 2007 Owner's Manual page 181

The display has three color-coded lights.
The URPA lights are used to provide distance
and system information, along with beeps played
out the speakers.
How the System Works
When the shift lever is moved into REVERSE (R),
the rear display will briefly illuminate to let you
know the display is operating correctly. URPA
comes on automatically when the shift lever
is moved into REVERSE (R). The system also
does not work at a reverse speed greater than
5 mph (8 km/h). To remind you of this, the red light
on the rear display will flash.
The display is located
near the rear window
and can be seen
by looking over your
right shoulder.
The system can be disabled using the Driver
Information Center (DIC). See DIC Controls and
Displays on page 214.
How the System Works when Backing
If the shift lever is in REVERSE (R), URPA detects
objects close to the rear bumper. The first time an
object is detected a single beep will sound. If an
object is detected at a REVERSE (R) speed
between 0 mph (0km/h) and 5 mph (8 km/h), the
following describes what will occur based on your
distance to a detected object located behind the
vehicle:
•
At distances between 40 inches (1 m) and
8 ft (2.5 m), a single amber light will be lit.
•
At distances between 23 inches (0.6 m) and
40 inches (1 m), both amber lights will be lit.
•
At distances between 12 inches (0.3 m) and
23 inches (0.6 m), all three lights (amber/
amber/red) will be lit.
•
At distances less than 12 inches (0.3 m), a
beeping sound will repeat for a short time and
all three lights (amber/amber/red) will be lit and
flashing.
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