Ford 2011 F-250 Owner's Manual page 269

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.
WARNING: If a failure has been detected within the
AdvanceTrac with RSC system, the stability control light will
illuminate steadily. Verify that the AdvanceTrac with RSC system is
not manually disabled. Press the stability control button located on the
instrument panel to the right of the climate control system. If the
stability control light still illuminates steadily, have the system serviced
by an authorized dealer immediately. Operating your vehicle with
AdvanceTrac with RSC disabled could lead to an increased risk of
loss of vehicle control, vehicle rollover, personal injury and death.
The AdvanceTrac with RSC system automatically enables each time
the engine is started. All features of the AdvanceTrac with RSC system
(TCS, ESC, and RSC ) are active and monitor the vehicle from start-up.
However, the system will only intervene if the driving situation requires
it.
2011 F-250/350/450/550 (f23)
Owners Guide, 1st Printing
USA (fus)
Driving
269