2013 Chevrolet Volt Owner Manual - Page 228

9-42 Driving and Operating Turning the System On and Off The system can be turned on and off by pressing the park assist button located in the overhead console. To be detected, objects must be at least 25 cm (10 in) off the ground and below hatch level. Objects must also be within 1.2 m (4 ft) in front of the vehicle and 2.5 m (8 ft) from the rear bumper. This distance may be less during warmer or humid weather. Objects Detected by Both the Front and Rear Sensors (If Equipped) In general, if objects are detected at the same time near both the front and rear bumpers while backing up, the beeps only sound to indicate that objects are close to the rear bumper. However, if an object comes within 0.3 m (1 ft) of the front bumper while the vehicle is backing up and at the same time there is another object further than 0.3 m (1 ft) from the rear bumper, then the beeps only sound to indicate the object that is closer to the front bumper. When the System Does Not Seem to Work Properly The following messages may be displayed on the DIC: SERVICE PARKING ASSIST: If this message occurs, check the following conditions: . The indicator light next to the park assist button lights up when the system is on and turns off when it has been disabled. When the system is off, PARK ASSIST OFF displays on the Driver Information Center (DIC). The message disappears after a short period of time. The system defaults to the on setting each time the vehicle is started. The ultrasonic sensors are not clean. Keep the vehicle's bumpers free of mud, dirt, snow, ice, and slush. For cleaning instructions, see Exterior Care on page 10‑79. The park assist sensors are covered by frost or ice. Frost or ice can form around and behind the sensors and may not always be seen; this can occur after washing the vehicle in cold weather. The message may not clear until the frost or ice has melted. . If the above conditions do not exist, take the vehicle to your dealer to repair the system.