Renault CAPTUR - Page 178

traction control system: ASR .....................
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ENG_UD77254_4
Dispositifs de correction et d’assistance à la conduite (HJB - Renault)
Electronic stability program
(ESC) with understeer control
and traction control
Electronic stability program ESC
This system helps you to keep control
of the vehicle in critical driving condi-
tions (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 fitted throughout the ve-
hicle measure the actual direction.
The system compares the direction se-
lected by the driver and the actual di-
rection of the vehicle and corrects this
as necessary by braking certain wheels
and/or acting on the engine power.
If the system is triggered, the

warning light flashes on the instrument
panel.
DRIVING CORRECTION DEVICES AND AIDS (3/5)
Understeer control
This system optimises the action of the
ESC in the case of pronounced under-
steering (loss of front axle road hold-
ing).
Traction control
This system helps to limit wheelspin of
the drive wheels and to control the ve-
hicle 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 au-
tomatically until the drive supplied be-
comes 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.
In some situations (driving on very wet
ground: snow, mud, etc. or driving with
snow chains fitted), the system may
reduce the engine output to limit wheel-
spin.
Operating faults
When the system detects an operat-
ing fault the message “Check ESC”
and warning lights
© and 
appear on the instrument panel. In
this case, the ESC and traction control
system are deactivated.
Consult an approved dealer.