Intrusion Sensor
WARNING: This page is about a different car, the 2020 Ford F-150. However, it is still accessible from the selected car via links, so may be relevant.
The intrusion sensor is powered at all times and is monitored by the BCM. When the perimeter alarm is armed, the intrusion sensor monitors the passenger compartment for movement and, if movement is detected, it sends a signal to the BCM.
When the intrusion sensor is replaced, the LIN New Module Initialization procedure with the BCM must be carried out using a diagnostic scan tool.