Circuit/System Description
WARNING: This page is about a different car, the 2017 GMC Acadia. However, it is still accessible from the selected car via links, so may be relevant.
When the ignition is turned ON, the parking assist control module, frontview camera module, radar sensor modules and active safety control module receive the vehicle identification number (VIN) from the body control module. The modules will compare the VIN received to the VIN stored in memory.