Warning Buzzer Frequency

The warning buzzer cycle changes between 4 levels (for rear center) and 3 levels (for rear corner), according to the detection distance.
The nearest sensor from the detected obstacle determines the buzzer cycle if plural sensors simultaneously detect obstacles.

Fig 1: Warning Buzzer Frequency Pattern

Courtesy of NISSAN NORTH AMERICA, INC.

NOTE:

The warning buzzer of the corner sensor sounds as follows:

As for the second and third stages, the warning buzzer sounds 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.