Passive Key
WARNING: This page is about a different car, the 2016 Ford Expedition. However, it is still accessible from the selected car via links, so may be relevant.
The passive key incorporates both the PATS functions and the RKE transmitter functions in a single device.
During key programming procedures, the PATS and RKE transmitter ID of a passive key are both programmed. Up to a maximum of 4 passive keys can be programmed.
If the passive key battery fails, the passive key contains a key blade to unlock the door manually. Additionally, the passive key must be placed in the backup starting location to start the vehicle.