See also:

Trailer tow false alerts
When towing a trailer, the sensors may detect the trailer thus causing a false alert. It may be desirable to turn the BLIS off if the false alerts become annoying. ...

CTA and Reverse Sensing System (RSS) interaction
CTA works along with the Reverse Sensing System (RSS) (if equipped). Become familiar with the warning tones of both systems. ...

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 ...