Ford 2004 Expedition Owner's Manual page 208

Driving
Use extra caution while becoming familiar with your vehicle. Know the
capabilities and limitations of both you as a driver and your vehicle.
ADVANCETRAC STABILITY ENHANCEMENT SYSTEM
(IF EQUIPPED)
The AdvanceTrac system provides a stability enhancement feature as
well as a traction enhancement feature. It helps your vehicle maintain
traction, when driving on slippery and/or hilly road surfaces, by detecting
and controlling wheel spin. Excessive wheel spin is controlled by
momentarily reducing engine power and rapidly applying the anti-lock
brakes. The system is a driver aid which makes your vehicle easier to
handle primarily on snow and ice-covered roads.
If your vehicle should become stuck in deep snow or mud, try switching
the AdvanceTrac system off by pressing the AdvanceTrac
This will allow your tires to "dig" for traction.
If the AdvanceTrac system is activated and deactivated excessively in a
short period of time, the brake portion of the system will shut down to
allow the brakes to cool down. A limited AdvanceTrac
only engine power reduction will still help control the wheels from
over-spinning. When the brakes have cooled down, the system will again
function normally. Anti-lock braking is not affected by this condition and
will function normally during the cool-down period.
AdvanceTrac enhances your vehicle's stability during maneuvers that
require all available tire traction, like in wet/snowy/icy road conditions
and/or when performing emergency maneuvers. In an emergency
lane-change, the driver will experience better overall vehicle traction,
and have better control of the vehicle.
The AdvanceTrac system helps the driver maintain steering control if
the vehicle begins to slide excessively left or right or spin out.
AdvanceTrac will attempt to correct the sliding motion by applying
brake force at individual tires and, if necessary, by reducing engine
power.
Driving conditions which may activate AdvanceTrac
• Taking a turn too fast
• Maneuvering quickly to avoid an accident, pedestrian or obstacle
• Hitting a patch of ice
• Changing lanes on a snow-rutted road
• Entering a snow-free road from a snow-covered side street, or vice
versa
208
2004 Expedition (exd)
Owners Guide (post-2002-fmt)
USA English (fus)
button.
function using
include: