Passive Key

WARNING: This page is about a different car, the 2017 Ford F-550 Super Duty, 2017 Ford F-450 Super Duty, 2017 Ford F-350 Super Duty, and 2017 Ford F-250 Super Duty. However, it is still accessible from the selected car via links, so may be relevant.

The passive key incorporates both the PATS and the RKE transmitter functions in a single device. The passive key must be located inside the vehicle for the ignition to transition out of off and on the outside for keyless entry features. During key programming procedures, the PATS and the RKE transmitter of the passive key are both programmed into the BCM. Passive keys are programmed into the BCM using the passive key backup starting location. The vehicle accepts programming of up to 4 passive keys.

The passive key receives the low frequency signals from the PATS center antenna and the PATS rear antenna. When the passive key is activated by one of the low frequency signals, it sends out a high frequency signal that is received by the RTM. The passive key also contains a removable key blade that unlocks the driver door in the event of an electrical failure (such as a drained battery).