• 4H (4X4 HIGH) provides mechanically locked four-wheel drive power
to front and rear wheels. The “4X4 HIGH” light will illuminate in the
instrument cluster when this position is selected. This position is not
recommended for use on dry pavement. This position is only intended
for severe winter or off-road conditions, such as deep snow, ice or
shallow sand.
• 4L (4X4 LOW) provides mechanically locked four-wheel drive when
extra power at reduced speeds is required. The “4X4 LOW” light will
illuminate in the instrument cluster when this position is selected.
This position is not recommended for use on dry pavement. Use this
position for off-road low-speed operation or when extra power is
required, such as climbing steep grades, going through deep sand or
pulling a boat out of the water.
Note: If your vehicle is equipped with AdvanceTrac威 with RSC, the
AdvanceTrac威 with RSC system will automatically turn off the stability
enhancement feature when you shift the Control Trac A4WD system into
4L (4X4 LOW). The brake traction enhancement feature will still be
enabled.
The AdvanceTrac威 with RSC stability enhancement system can be turned
off manually by pressing the AdvanceTrac威 with RSC button (refer to
AdvanceTrac威 with Roll Stability Control (RSC) Stability
Enhancement System in this chapter) while operating in 2H, A4WD or
4H while driving in deep sand, very deep snow or more strenuous
off-road maneuvers. This will disable the engine management feature,
allowing the vehicle to maintain full power and enhanced momentum
through the obstacle.
Utility and four-wheel drive vehicles are not designed for
cornering at speeds as high as passenger cars any more than
low-slung sports cars are designed to perform satisfactorily under
off-road conditions. Avoid sharp turns or abrupt maneuvers in these
vehicles.
Note: The Control Trac selector knob should not be changed while the
rear wheels are slipping.
2006 Expedition (exd)
Owners Guide (post-2002-fmt)
USA (fus)
Driving
262
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