Jaguar XK JJM 18 02 30 701 - Manual (Page 148)

165
Stability Control
R
Stability Control
PRINCIPLE OF OPERATION
Dynamic stability control (DSC)
!
WARNING:
The fact that the vehicle is fitted with
DSC must never allow the driver to be
tempted into taking risks which could
affect his/her safety or that of other
road users. In all cases it remains the
driver’s responsibility to drive safely
according to the prevailing conditions.
Dynamic stability control is operational
whenever the engine is running, unless it
has been switched off. When the system
is operating, the warning light in the
instrument cluster will flash.
The DSC system controls the anti-lock
braking system (ABS), traction control
and yaw control of the vehicle.
The DSC system assists the driver in
retaining directional control of the vehicle
in situations where the vehicle is sliding
(understeer or oversteer). It must not
encourage the driver to drive beyond the
limit of adhesion or at speeds higher than
those suitable for the prevailing road and
traffic conditions.
It applies braking pressure to individual
wheels if excessive variation is detected.
This ensures that the vehicle follows the
driver’s intended direction of travel.
Traction control will intervene to prevent
wheel spin by automatically reducing the
power output from the engine and
applying braking to individual wheels.
This improves acceleration, particularly
on surfaces with uneven friction, for
example, one wheel on ice the other on
tarmac.
Trac dynamic stability control (Trac
DSC)
Trac DSC is an additional feature where
DSC settings are optimised for maximum
traction in difficult conditions, such as
deep snow, sand or gravel. This makes
greater traction possible, without having
to completely lose the benefits of DSC,
however, vehicle stability may be
reduced.
Caution: Vehicle safety could be
reduced by inappropriate use of Trac
DSC. Trac DSC should only be used
when necessary for the prevailing
conditions:
• In deep snow.
• To maintain the movement of the
vehicle on soft or loose surfaces
e.g. gravel, sand.
• When snow chains are fitted.