FORD 2012 F-550 v.3 - Manual (Page 276)

four-wheel drive mode (if equipped), the traction control system will be
automatically disabled. Traction control operation will resume when the
vehicle is placed back into two-wheel drive mode.
WARNING: Aggressive driving in any road conditions can cause
you to lose control of your vehicle increasing the risk of severe
personal injury or property damage. The occurrence of a traction
control event is an indication that at least some of the tires have
exceeded their ability to grip the road; this may lead to an increased
risk of loss of vehicle control, vehicle rollover, personal injury and
death. If you experience a severe road event, SLOW DOWN.
Switching off engine only traction control
The traction control switch is
located on the instrument panel to
the right of the climate control
system. The traction control system will automatically turn on every time
the ignition is turned off and on. The traction control system should
normally be left on.
If you should become stuck in snow or ice or on a very slippery road
surface, try switching the traction control system off. This may allow
excess wheel spin to “dig” the vehicle out and enable a successful
“rocking” maneuver.
If a system fault is detected, the TCS OFF indicator will illuminate, the
traction control button will not turn the system on or off and your
vehicle should be serviced by an authorized dealer.
Engine only traction control (DRW only)
Button functions TCS OFF indicator TCS
Default at start-up Not illuminated Enabled
Button pressed
momentarily
Illuminated Disabled
Button pressed again
after deactivation
Not illuminated Enabled
Transfer case switched to
4WD
1
Illuminated Disabled
1 Engaging 4WD automatically disables TCS.
Driving
276
2012 F-250/350/450/550 (f23)
Owners Guide, 3rd Printing
USA (fus)