How the System WorksURPA comes on automatically when the shift lever ismoved into REVERSE (R) and the vehicle speed is lessthan 3 mph (5 km/h). When the system turns on, thethree lights on the display will illuminate for one and ahalf seconds to let you know that the system isworking. If your vehicle is moving in REVERSE (R) at aspeed greater than 3 mph (5 km/h), the red light willflash to remind you that the system does not work at aspeed greater than 3 mph (5 km/h).If an object is detected at a REVERSE (R) speed ofless than 3 mph (5 km/h), one of the following will occur:Description English MetricAmber light 5 ft 1.5 mAmber/amber lights 40 in 1.0 mAmber/amber/red lights &continuous chime 20 in 0.5 mAmber/amber/red lightsflashing & continuouschime1 ft 0.3 mA chime will sound the first time an object is detectedbetween 20 inches (0.5 m) and 5 feet (1.5 m) away.URPA cannot detect objects that are above trunk level.In order for the rear sensors to recognize an object,it must be within detection range behind the vehicle.When the System Does Not Seem toWork ProperlyThe light may flash red when the vehicle is inREVERSE (R), if the ultrasonic sensors are not keptclean. So be sure to keep your rear bumper free of mud,dirt, snow, ice and slush. Other conditions that mayaffect system performance include things like thevibrations from a jackhammer or the compression of airbrakes on a very large truck. If after cleaning therear bumper and then driving forward at least 15 mph(25 km/h), the display continues to flash red, seeyour dealer.If a trailer was attached to your vehicle, or a bicycle oran object was hanging out of your trunk during yourlast drive cycle, the light may also flash red. The light willcontinue to flash whenever in REVERSE (R) untilyour vehicle is driven forward at least 15 mph (25 km/h)without any obstructions behind the vehicle.For cleaning instructions, see Washing Your Vehicle onpage 5-98.3-45
