Ford 2009 Flex Owner's Manual page 268

Driving
The Roll Stability Control system may be deactivated in certain
situations. See the Switching Off AdvanceTrac with RSC section
following.
Switching Off AdvanceTrac with RSC
If the vehicle is stuck in snow, mud or sand, and seems to lose engine
power, switching off certain features of the AdvanceTrac with RSC
system may be beneficial because the wheels are allowed to spin. This
will restore full engine power and will enhance momentum through the
obstacle. To switch off the AdvanceTrac with RSC system press the
AdvanceTrac with RSC
with RSC system can be restored by pressing the AdvanceTrac with
RSC Off button again or by turning off and restarting the engine.
If you switch off the AdvanceTrac with RSC system, the AdvanceTrac
with RSC "Off" button will illuminate and the sliding car icon
illuminate steadily. Pressing the AdvanceTrac with RSC
again will turn off the lighted button and the sliding car icon
In R (Reverse), ABS and the Engine and Brake Traction Control features
will continue to function; however, ESC and RSC are disabled.
AdvanceTrac with RSC Features
"Sliding
Button
car"
functions
icon
Illuminated
Default at
during bulb
start-up
check
Button pressed Illuminated
momentarily
Button pressed
again after
illuminated
deactivation
268
2009 Flex (471)
Owners Guide, 2nd Printing
USA (fus)
Off button. Full features of the AdvanceTrac
RSC
Enabled
Enabled
solid
Not
Enabled
will
Off button
.
Traction
ESC
Control
Enabled Enabled
Enabled Disabled
Enabled Enabled