Backup Transceiver
WARNING: This page is about a different car, the 2013 Ford Explorer. However, it is still accessible from the selected car via links, so may be relevant.
The backup transceiver is used as a backup device. If the vehicle fails to start conventionally, an Intelligent Access (IA) key can be placed in the backup slot to allow the vehicle to start. The backup transceiver is located next to the slot and activates any Intelligent Access (IA) key that is placed in the slot. The transceiver is wired to the RFA module and when activated it sends out a signal to activate an Intelligent
Access (IA) key. Once the key is activated, it sends a signal back to the transceiver which is then sent to the RFA module.