8
SAFETY
141
TRAJECTORY CONTROL
SYSTEMS (ESP)
Anti-slip regulation (ASR) and
electronic stability control (ESC)
The anti-slip regulation (also known as
traction control) optimises traction to pre-
vent skidding of the wheels, by acting on
the brakes of the driving wheels and on
the engine.
The electronic stability control acts on
the brake of one or more wheels and
on the engine to keep the vehicle on the
trajectory required by the driver, within
the limits of the laws of physics.
Activation
These systems are activated automati-
cally each time the vehicle is started.
They come into operation in the event
of a grip or trajectory problem.
This is indicated by fl ashing of
this warning lamp in the instru-
ment panel.
Intelligent traction control
system ("Snow motion")
Your vehicle has a system to help driving
on snow: intelligent traction control.
This system detects situations of diffi -
cult surface adhesion that could make it
diffi cult to move off or make progress on
deep fresh snow or compacted snow.
In these situations, the intelligent trac-
tion control limits the amount of wheel
slip to provide the best traction and tra-
jectory control for your vehicle.
In extremely severe conditions (deep
snow, mud, ...), when it proves impos-
sible to move off, it may be useful to
temporarily deactivate the ESP/ASR
systems to allow the wheels to spin
freely and so allow movement of the
vehicle.
Deactivation
In exceptional conditions (starting a
vehicle which is bogged down, stuck in
snow, on soft ground...), if you are un-
able to make progress, it may be ad-
visable to temporarily deactivate these
systems, so that the wheels can spin
freely and allow the vehicle to move.
Press the "ESP OFF" button, locat-
ed near the steering wheel.
If the indicator lamp in the button comes
on, this indicates that these systems
are deactivated.
The use of snow tyres is strongly
recommended on surfaces of-
fering low levels of adhesion.
It is recommended that the systems be
reactivated as soon as possible.
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