Perimeter alarm system

The perimeter anti-theft system will help protect your vehicle from unauthorized entry.
If there is any potential perimeter anti-theft problem with your vehicle, ensure ALL integrated keyhead transmitters are brought to the authorized dealer to aid in troubleshooting.
See also:
CTA False Alerts
Due to the nature of radar technology, there may be certain instances
when the BLIS will alert with no object present when backing up. This
is known as a false alert. Some level of false alerts ar ...
BLIS and/or CTA fault operation
If the BLIS and/or CTA senses a fault on either the left or right sensor,
the BLIS alert indicator will go on and remain on and the message
center will display BLIND SPOT SYSTEM FAULT or CROSS TRA ...
Second generation (2003–2006)
The Navigator was updated in 2003, along with the Ford Expedition, on the new
Ford U platform. The interior was also substantially revised to bring it up to
the level expected by luxury buyers. So ...
