How The System Works - Cadillac STS 2011 Owner's Manual

How the System Works

URPA comes on automatically when the shift lever is
moved into R (Reverse). The rear display briefly
illuminates to indicate 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.
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. Beeping will occur when the vehicle is closer than
20 inches (0.5 m) from the object.
3-42
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