The front sensors are active when the transmission is in any position other than park (P) or neutral (N), and your vehicle is moving but at a speed below 6 mph (10 km/h).
Front Sensing Zone
Coverage area of up to 28 in (70 cm) from the front bumper. The coverage area decreases at the outer corners.
When your vehicle approaches an object, a warning tone sounds. When your vehicle moves closer to an object, the warning tone repeat rate increases. The warning tone sounds continuously when an object is 12 in (30 cm) or less from the front bumper.
If the transmission is in reverse (R), the front sensing system provides audio warnings when your vehicle is moving and the detected obstacle is stationary or moving towards your vehicle.
If the transmission is in drive (D) or any other forward gear (for example, low (L), sport (S) or any forward gear in a manual transmission), the front sensing system provides audio warnings when your vehicle is moving below a speed of 7 mph (12 km/h) and an obstacle is located inside the detection area.