Tire Pressure Monitor (TPM) Module
WARNING: This page is about a different car, the 2014 Lincoln MKX and 2014 Ford Edge. However, it is still accessible from the selected car via links, so may be relevant.
The Tire Pressure Monitor (TPM) module has a dedicated power and ground. It communicates all IA and Remote Keyless Entry (RKE) information to the RFA module through a dedicated single circuit network. The TPM module is a receiving antenna that receives the high frequency signals from an IA key. It also receives the signals from an RKE command.