Ford F-250 Owner's Manual page 284

Driving
AdvanceTrac with RSC Features (SRW only)
Button functions
Button pressed again
after deactivation
Transfer case
switched to 4WD
3
Low
1
ESC has reduced sensitivity compared to fully active system.
2
Lamp light starts blinking for 4 seconds after entering press and hold
state.
3
Engaging 4WD Low locked automatically disables RSC, ESC and TSC.
Trailer sway control
Your vehicle may be equipped with trailer sway control. When properly
equipped, trailer sway control will use the vehicle's AdvanceTrac with
RSC system to detect and help reduce trailer sway by applying brake
force at individual wheels and, if necessary, by reducing engine power.
WARNING: Trailer sway control does not prevent a trailer from
swaying, it mitigates the sway from increasing once it has
occurred. If you are experiencing trailer sway it is likely that the trailer
is improperly loaded for the correct tongue weight or the speed of the
vehicle and trailer is too high. Pull the vehicle-trailer over to a safe
location to check the trailer weight distribution and tongue load and
reduce speed to a safe level while towing. If trailer sway is
experienced, SLOW DOWN.
During trailer sway control events the stability control light in the
instrument cluster will flash momentarily. The message center will also
display TRAILER SWAY REDUCE SPEED. In some cases when trailer
sway is detected, the vehicle speed is too high and may be above a
speed at which trailer sway will not grow continuously. This may cause
the system to activate multiple times, causing a gradual reduction in
speed.
284
2012 F-250/350/450/550 (f23)
Owners Guide, 1st Printing
USA (fus)
Stability
control
RSC
light
Not
Enabled
illuminated
Illuminated Disabled
ESC TCS
Enabled Enabled
Disabled Disabled