Warning Buzzer Frequency

The warning buzzer cycle changes between 4 levels (for front center and rear center) and 3 levels (for corner) according to the detection distance.
The nearest sensor from the detected obstacle determines the buzzer cycle if plural sensors detect any obstacle simultaneously detected obstacles.
If both the front and the rear sensor detect different objects simultaneously, the sensor which detects the closer object is prior to another sensor. If the detection distance is equal between the front and the rear, warning buzzer of rear sounds. (The front and the rear buzzers do not output the sounds simultaneously.)

Courtesy of NISSAN NORTH AMERICA, INC.

NOTE:

The warning buzzer of the corner sensor sounds as follows:

As for the first, second and third stages, the warning buzzer sound for 3 seconds at maximum.
As for the fourth stage, the warning buzzer does not stop even after a lapse of 3 seconds.
Buzzer stops when the vehicle moves away from an obstacle and the warning level decreases.