FORD 2003 Excursion v.1 - Manual (Page 136)

indicator light on the control will illuminate when the system is turned
off. If the indicator light illuminates when the RSS is not turned off, it
may indicate a failure in the RSS.
Keep the RSS sensors (located on the rear bumper/fascia) free
from snow, ice and large accumulations of dirt (do not clean the
sensors with sharp objects). If the sensors are covered, it will
affect the accuracy of the RSS.
If your vehicle sustains damage to the rear bumper/fascia, leaving
it misaligned or bent, the sensing zone may be altered causing
inaccurate measurement of obstacles or false alarms.
FOUR-WHEEL DRIVE (4WD) OPERATION (IF EQUIPPED)
For important information regarding safe operation of this type
of vehicle, see Preparing to drive your vehicle in this chapter.
Four–wheel drive (4WD) supplies power to all four wheels. 4WD should
not be operated on dry pavement; driveline damage may occur.
If equipped with the Electronic Shift 4WD System, and 4WD Low
is selected while the vehicle is moving, the 4WD system will not
engage. This is normal and should be no reason for concern. Refer
to Shifting to/from 4WD Low for proper operation.
The 4WD system also uses hub locks that can be engaged and
disengaged based on the 4WD mode selected. Refer to Front wheel hub
locks (if equipped) for more information.
4WD system indicator lights
• 4X4 - illuminates when 4WD High
is selected.
• LOW RANGE - illuminates when
4WD Low is selected.
4x4
Driving
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