FORD 2004 - Manual (Page 256)

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 High or
4WD Low 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 above 3 mph (5 km/h), 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.
System indicator lights
• 4X4 - momentarily illuminates
when the vehicle is started.
Illuminates when 4X4 HIGH
(4WD High) is selected.
• 4X4 LOW – momentarily
illuminates when the vehicle is
started. Illuminates when 4X4
LOW (4WD Low) is selected.
Using the Control Trac 4WD system
4X4 AUTO - Provides electronically-controlled four-wheel drive with
power delivered to all four wheels as required for traction. This mode is
appropriate for all on-road driving conditions, including dry road
surfaces, wet pavement, snow and gravel.
4X4 HIGH (4WD High) - Provides locked four-wheel drive power to all
four wheels. This mode is not intended for use on dry pavement. This
4x4
4x4
LOW
2007 07+ Explorer Sport Trac (esp)
Owners Guide (post-2002-fmt)
USA (fus)
Driving
256