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Audible Warnings
Distance to Object Warning
Speed below 2.5 mph (4 km/h)
up to 1.4 feet (.4 meters) Solid
1.4 feet (.4 meters) to 3 feet (.9 meters) Fast beep
3 feet (.9 meters) to 4.5 feet (1.4 meters) Medium beep
4.5 feet (1.4 meters) to 6.3 feet (1.9 meters) Medium/slow beep
6.3 feet (1.9 meters) to 8.7 feet (2.6 meters) Slow beep
8.7 feet (2.6 meters) to 16.4 feet (5 meters) No sound
The reverse sensing system is automatically enabled when the gear
selector is placed in R (Reverse) and the ignition is ON. A control in the
message center allows the driver to disable the system only when the
ignition is ON and the gear selector is in R (Reverse). Refer to Message
center in the Driver Controls chapter.
The message center will indicate the system is OFF and will not allow
the driver to switch the system ON to indicate a failure of the reverse
sensing system.
The radar sensor is located behind the rear bumper/fascia. Always
keep the rear bumper/fascia free from snow, ice and large
accumulations of dirt. These elements may cause the system to
operate inaccurately.
If the 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.
CONTROL TRAC FOUR-WHEEL DRIVE (4X4) OPERATION
(IF EQUIPPED)
For important information regarding safe operation of this type
of vehicle, see Preparing to drive your vehicle in this chapter.
If equipped with the Control Trac 4x4 System, and 4L (4x4 LOW)
is selected while the vehicle is moving, the system will not
engage. This is normal and should be no reason for concern.
Before 4L (4x4 LOW) can be engaged, the vehicle must be
brought to a complete stop and the transmission placed in
N (Neutral).
Do not use 4H (4X4) or 4L (4X4 LOW) on dry, hard surfaced roads.
Doing so will produce excessive noise, increased tire wear and may
2007 Expedition (exd)
Owners Guide (post-2002-fmt)
USA (fus)
Driving
274