2004 Cadillac SRX Owner's Manual - Page 145

The URPA display is located inside the vehicle, above the liftgate glass. It has three color-coded lights that can be seen through the rearview mirror or by turning around. If an object is detected at a REVERSE (R) speed of less than 3 mph (5 km/h), one of the following will occur: Description amber light amber/amber lights amber/amber/red lights & continuous chime amber/amber/red lights flashing & continuous chime English 5 ft. 40 in. 20 in. 1 ft Metric 1.5 m 1.0 m 0.5 m 0.3 m How the System Works URPA comes on automatically when the shift lever is moved into REVERSE (R) and the vehicle speed is less than 3 mph (5 km/h). When the system turns on, the three lights on the display will illuminate for one and a half seconds to let you know that the system is working. If your vehicle is moving in REVERSE (R) at a speed greater than 3 mph (5 km/h), the red light will flash to remind you that the system does not work at speed greater than 3 mph (5 km/h). A chime will sound the first time an object is detected between 20 inches (0.5 m) and 5 feet (1.5 m) away. URPA cannot detect objects that are above liftgate level. In order for the rear sensors to recognize an object, it must be within detection range behind the vehicle. 3-23