Passive Start Antennas
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.
There are three passive start antennas. The passive start antennas are hardwired to the Remote Function Actuator (RFA) module and when activated by the RFA module, they transmit a low frequency signal that activates an Intelligent Access (IA) key.