Distance Sensor (ICC Sensor)

WARNING: This page is about a different car, the 2018 Nissan Maxima. However, it is still accessible from the selected car via links, so may be relevant.

Distance sensor (ICC sensor) is installed behind the front bumper and detects a vehicle ahead using millimeter waves.

Courtesy of NISSAN NORTH AMERICA, INC.
Distance sensor (ICC sensor) detects radar reflected from a vehicle ahead by irradiating radar forward and calculates a distance from the vehicle ahead and relative speed, based on the detected signal.
Distance sensor (ICC sensor) transmits the presence/absence of a vehicle ahead and the distance from the vehicle to ADAS control unit via ITS communication.