System Configuration: Notes
WARNING: This page is about a different car, the 2017 Kia Soul EV. However, it is still accessible from the selected car via links, so may be relevant.
PAS consists of 8 sensors (4 front & 4 rear) which detect the obstacles and transmit the result in 3 separate warning levels, the first, second and third to IPM (BCM) via Lin communication. IPM (BCM) determines the level of alarm based on the transmitted communication message from the slave sensors and then operates the buzzer or transmits the data for display.