DRIVER CORRECTION DEVICES AND AIDS
2
118 - Driving
Electronic stability control ESC
with understeer control and
traction control
Electronic stability control ESC
This system helps you to keep control
of the vehicle in critical driving
conditions (avoiding an obstacle, loss
of grip on a bend, etc.).
Operating principle
A sensor in the steering wheel detects
the direction selected by the driver.
Other sensors throughout the vehicle
measure the actual direction.
The system compares driver input to
the actual trajectory of the vehicle and
corrects the trajectory if necessary by
controlling the braking of certain
wheels and/or engine power. In the
event that the system is engaged,
indicator light flashes on the
instrument panel.
Understeer control
This system optimises the action of the
ESC in the case of pronounced
understeering (loss of front axle road
holding).
Traction control
This system helps to limit wheelspin of
the drive wheels and to control the
vehicle when pulling away accelerating
or decelerating.
Operating principle
Using the wheel sensors, the system
measures and compares the speed of
the drive wheels at all times and slows
down their over-rotation. If a wheel is
starting to slip, the system brakes
automatically until the drive supplied
becomes compatible with the level of
grip under the wheel again.
The system also adjusts the engine
speed to the grip available under the
wheels, independently of the pressure
exerted on the accelerator pedal.
Operating faults
When the system detects an operating
fault, the "Check ESC" message and
the and warning lights
appear on the instrument panel. In this
case, the ESC and traction control
system are deactivated.
Consult an approved dealer.
ESC and traction control in Track
mode
After pressing and holding the switch
1
to select Track mode, the ESC
functions can be modified and delay
the driving assistance (refer to "Choice
of driving mode" in Section 2).
Disabling the ESC and traction
control functions
In some situations (driving on very wet
ground: snow, mud, or driving in Sport,
Track mode, etc.), you can disable
these functions by pressing and
holding the switch
2
.
The warning light and the "ESC
OFF" message are displayed on the
instrument panel to warn you.
You can reactivate these functions at
any time by briefly pressing the switch
2
.
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