Lincoln 2011 Navigator - Manual (Page 238)

FORWARD AND REVERSE SENSING SYSTEMS
The forward and reverse sensing system will warn the driver of obstacles
within a certain range of the front and rear bumpers.
The front sensors will be active
when the gearshift is in any position
other than P (Park) or N (Neutral)
and the vehicle speed is below
8 mph (13 km/h). The rear sensors
will only be active when the
gearshift is in R (Reverse).
The front sensors cover an area up
to 27.6 inches (70 cm) from the
front of the vehicle and about
6–9 in. (15–23 cm) to the side of
the front end of the vehicle. See the
illustration for approximate sensor
area coverage.
Driving
238
2011 Navigator (nav)
Owners Guide, 1st Printing
USA (fus)