Excessive wheel spin is controlled in two ways, which may work
separately or in tandem, Engine Traction Control and Brake Traction
Control. Engine Traction Control works to limit drive-wheel spin by
momentarily reducing engine power. Brake Traction Control works to
limit wheel spin by momentarily applying the brakes to the wheel that is
slipping. Traction Control is most active at low speeds.
During Traction Control events the “sliding car” icon
in the
instrument cluster will flash.
If the Traction Control system is activated excessively in a short period
of time, the braking portion of the system may become temporarily
disabled to allow the brakes to cool down. In this situation, Traction
Control will use only engine power reduction or transfer to help control
the wheels from over-spinning. When the brakes have cooled down, the
system will regain all features. Anti-lock braking, and ESC are not
affected by this condition and will continue to function during the
cool-down period.
The Engine Traction Control and Brake Traction Control system may be
deactivated in certain situations. See the
Switching Off Traction
Control
section below.
Electronic Stability Control (ESC)
Electronic Stability Control (ESC) may enhance your vehicle’s directional
stability during adverse maneuvers, for example when cornering severely or
avoiding objects in the roadway. ESC operates by applying brakes to one or
more of the wheels individually and, if necessary, reducing engine power if
the system detects that the vehicle is about to skid or slide laterally.
During Electronic Stability Control events the “sliding car” icon
in the
instrument cluster will flash.
Certain adverse driving maneuvers may activate the Electronic Stability
Control system, which include but are not limited to:
•
Taking a turn too fast
•
Maneuvering quickly to avoid an accident, pedestrian or obstacle
•
Driving over a patch of ice or other slippery surfaces
•
Changing lanes on a snow-rutted road
•
Entering a snow-free road from a snow-covered side street, or vice
versa
•
Entering a paved road from a gravel road, or vice versa
•
Cornering while towing a heavily loaded trailer (refer to
Trailer
towing
in the
Tires, Wheels and Loading
chapter).
Driving
181
2010 Focus
(foc)
Owners Guide, 1st Printing
USA
(fus)