Renault Clio: Electronic stability program (ESC) with understeer control and traction control
Renault Clio IV (2014-2019) Owners Manual / Driving / Driver correction devices and aids / Electronic stability program
(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 understeer (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 message “CHECK ESC” and
warning light 
and
appear
on the instrument panel. In this case,
the ESC and traction control system
are deactivated.
Consult an approved dealer.
Disabling the traction control system
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 wheelspin.
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Emergency brake assist
This system supplements the ABS
and helps reduce vehicle stopping distances.
Operating principle
The system is for detecting an emergency
braking situation. In this case,
the braking assistance i
Hill start assistance
This function assists the driver when
starting on hills. It prevents the vehicle
from rolling backwards, depending on
the slope, by automatically applying the
brakes when the driver lifts his/her
Speed limiter
The speed limiter function helps you
stay within the driving speed limit that
you choose, known as the limit speed.
Controls
Main “On/Off” switch.
Limit speed activation, storage
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Front pyrotechnic inertia reel: Removal - Refitting
IMPORTANT
Consult the safety and cleanliness advice and operation
recommendations before carrying out any
repair (see 88C, Air bag and Pretensioners, Airbag
and pretensioners: Precautions for the
repair, 88C-6).
REMOVAL
I - REMOVAL PREPARATION OPERATION
IMPORTANT
To avoid any risk of triggering whe
Brake servo: Check
RIGHT-HAND DRIVE
There is no "RENAULT" tool to check the braking assistance
circuit.
Use a vacuum pump fitted with couplings, part numbers
7701349942 and 7700105874 with hose part
number 8200027352 or 8200376245.
CHECK
I - CHECKING THE SEALS
When checking the brake servo seal, ensure that there
