FORD 2011 E-450 v.3 - Manual (Page 193)

The parking brake is not recommended to stop a moving vehicle.
However, if the normal brakes fail, the parking brake can be used to stop
your vehicle in an emergency. Since the parking brake applies only the
rear brakes, the vehicle’s stopping distance will increase greatly and the
handling of your vehicle will be adversely affected.
TRACTION CONTROL (IF EQUIPPED)
Your vehicle may be equipped with a traction control system (TCS). This
system helps you maintain the stability and steerability of your vehicle,
especially on slippery road surfaces such as snow or ice-covered roads
and gravel roads. The system will allow your vehicle to make better use
of available traction in these conditions.
During TCS operation, the traction
control active light will flash and the
engine will not “rev-up” when you
press further on the accelerator.
This is normal system behavior and
should be no reason for concern.
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.
The TCS switch, located on the
center console, has a TCS OFF light
that illuminates steadily in the
instrument cluster when the system
is off. The TCS will automatically
turn on every time the ignition is
turned off and on. The TCS should
normally be left on.
If you should become stuck in snow or ice or on a very slippery road
surface, try switching the TCS off. This may allow excess wheel spin to
“dig” the vehicle out and enable a successful “rocking” maneuver.
Remember to switch the TCS back on once the vehicle is no longer
stuck.
Driving
193
2011 Econoline (eco)
Owners Guide, 3rd Printing
USA (fus)