Ford 2009 Expedition Owner's Manual page 293

Pull the release lever to release the
brake. Driving with the parking
brake on will cause the brakes to
wear out quickly and reduce fuel
economy.
ADVANCETRAC WITH ROLL STABILITY CONTROL™ (RSC )
STABILITY ENHANCEMENT SYSTEM (IF EQUIPPED)
WARNING: Vehicle modifications involving braking system,
aftermarket roof racks, suspension, steering system, tire
construction and/or wheel/tire size may change the handling
characteristics of the vehicle and may adversely affect the performance
of the AdvanceTrac with RSC system. In addition, installing any
stereo loudspeakers may interfere with and adversely affect the
AdvanceTrac with RSC system. Install any aftermarket stereo
loudspeaker as far as possible from the front center console, the
tunnel, and the front seats in order to minimize the risk of interfering
with the AdvanceTrac with RSC sensors. Reducing the effectiveness
of the AdvanceTrac with RSC system could lead to an increased risk
of loss of vehicle control, vehicle rollover, personal injury and death.
WARNING: Remember that even advanced technology cannot
defy the laws of physics. It's always possible to lose control of a
vehicle due to inappropriate driver input for the conditions. Aggressive
driving on any road condition can cause you to lose control of your
vehicle increasing the risk of personal injury or property damage.
Activation of the AdvanceTrac with RSC system is an indication that
at least some of the tires have exceeded their ability to grip the road;
this could reduce the operator's ability to control the vehicle,
potentially resulting in a loss of vehicle control, vehicle rollover,
personal injury and death. If your AdvanceTrac with RSC system
activates, SLOW DOWN.
2009 Expedition (exd)
Owners Guide, 1st Printing
USA (fus)
Driving
293