Driving

Driving correction and assistance systems

~8min read

Depending on the vehicle, these may consist of:

  • ABS (anti-lock braking system);
  • ESC (Electronic Stability Control) with understeer control and traction control;
  • emergency brake assist with, depending on vehicle, braking anticipation;
  • rear-wheel steering.
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functions are additional aids in critical driving situations, to adapt the vehicle's behaviour to the driver's intentions.

However, these functions do not take over from the driver.

They do not extend the vehicle’s limits and must not encourage driving faster. They can therefore in no way replace the driver’s vigilance or responsibility during manoeuvres (the driver must always be alert to sudden events that may occur while driving).

ABS (anti-lock braking system)

During heavy braking, ABS prevents the wheels from locking, so you can control the stopping distance and keep control of the vehicle.

In these conditions, you can brake while steering to avoid obstacles.

This system also helps optimise stopping distances, especially on low-grip surfaces (wet roads, etc.).

Each time the system operates, the brake pedal pulsates. ABS does not in any case improve the "physical" performance related to tyre-to-road grip. Safe driving rules must therefore always be followed (distances between vehicles, etc.).

In an emergency, apply firm, continuous pressure to the pedal. Do not pump the brake pedal. The ABS will modulate the braking force applied in the braking system.

Operating faults:

  • allumés au tableauand
    de bord accompagnés desilluminated on the instrument panel
    with the messages "ABS check", "Braking system check" and "ESC check": this indicates that the ABS, ESC and emergency brake assist are deactivated. Braking is still available;
  • ,,
    et,
    allumésand
    au tableau de bord accompagnésilluminated
    on the instrument panel with the message "Braking system fault": this indicates a fault in the braking system.

In both cases, consult a Brand Representative.

freinage est partiellementYour
braking is partially ensured. However, braking abruptly is dangerous and requires you to come to an immediate and mandatory stop, compatible with traffic conditions. Contact an authorised dealer.

Hill start assist

This system assists when starting on a slope. It prevents the vehicle from rolling back, depending on the gradient, by automatically applying the brakes when the driver lifts their foot from the brake pedal to press the accelerator.

System operation

It only operates when the gear lever is in a position other than neutral (a position other than N or P for automatic gearboxes) and the vehicle is at a complete standstill (brake pedal pressed).

The system holds the vehicle for approximately 2 seconds. Then the brakes release gradually (the vehicle moves according to the gradient).

d'aide au démarrageThe
hill start assist system cannot completely prevent the vehicle from rolling back in all cases (very steep gradients, etc.).

The driver can always apply the brake pedal to prevent the vehicle from rolling back.

Hill start assist must not be used for prolonged stops: use the brake pedal.

This function is not designed to immobilise the vehicle permanently.

If necessary, use the brake pedal to stop the vehicle.

The driver must remain particularly alert on slippery or low-grip surfaces and/or on slopes.

Risk of serious injury.

Electronic Stability Control (ESC) with understeer control and traction control system

Electronic Stability Control (ESC)

This system helps maintain control of the vehicle in "critical" driving situations (avoiding an obstacle, loss of grip in a bend...).

Operating principle

A steering wheel sensor detects the trajectory the driver intends to follow.

Other sensors located throughout the vehicle measure its actual trajectory.

The system compares the driver's intended path with the vehicle's actual trajectory and, if necessary, corrects the latter by acting on the braking of certain wheels and/or on engine power. When the system activates, the indicatorau tableau de bord.flashes
on the instrument panel.

Understeer control

This system optimises the action of the ESC in the event of pronounced understeer (loss of grip at the front axle).

Traction control system

This system helps limit wheel spin of the driven wheels and helps control the vehicle when starting, accelerating or decelerating.

Operating principle

Using wheel sensors, the system measures and compares the speed of the driven wheels at all times and detects wheel spin. If a wheel tends to spin, the system brakes that wheel until traction is again compatible with the grip available under the wheel.

The system also acts on engine speed according to the grip available under the wheels, independently of the action on the accelerator pedal.

Operating fault

When the system detects an operating fault, the message "ESC check" and the warning lights'affichent au tableau de bord.
appear on the instrument panel.

In this case, ESC and the traction control system are deactivated. Contact a Renault dealer.

Inhibition de la fonction antipatinage

Deactivating the traction control function

In certain situations (driving on very soft ground: snow, mud, etc., or driving with snow chains fitted), the system may reduce engine power to limit wheel spin. If this effect is not wanted, the function can be deactivated by pressing switch 1.

The message "Traction control off" appears on the instrument panel to warn you.

As the traction control system provides additional safety, it is not recommended to drive with the function deactivated.

Leave this situation as soon as possible by pressing switch 1 again.

Note: the function is automatically reactivated when the ignition is switched on, or once the vehicle exceeds a speed of approximately 40 km/h.

Emergency brake assist

This is a system complementary to ABS that helps reduce the vehicle's stopping distances.

Operating principle

The system detects an emergency braking situation. In this case, brake assist immediately builds up maximum power and may activate ABS regulation.

ABS braking is maintained as long as the brake pedal is not released.

Hazard warning lights activation

Depending on the vehicle, these may come on under strong deceleration.

Operating fault

When the system detects an operating fault, the message "Braking system check" appears on the instrument panel, together with the warning light.


Consult a Renault dealer.

Braking anticipation

Depending on the vehicle, when you release the accelerator pedal quickly, the system anticipates braking in order to reduce stopping distances.

Special cases

When using the cruise control:

  • if you use the accelerator pedal, the system may activate when you release it;
  • if you do not use the accelerator pedal, the system will not disengage.
Roues arrière directrices

Rear-wheel steering

On vehicles so equipped, this system steers the rear wheels according to driving conditions while the vehicle is moving: at low speed it favours manoeuvrability, at higher speed it optimises stability.

At low speeds, the rear wheels turn in the opposite direction to the front wheels (figure A) to improve manoeuvrability.

This is useful when driving in town, on winding roads, or manoeuvring in a car park, etc.

Roues arrière directrices

At speeds above 60 km/h, the rear wheels turn in the same direction as the front wheels (figure B) to optimise vehicle stability. This is useful when changing lanes, cornering, etc.

Operating faults

  • If theaccompagné du
    warning light appears together with the message "Steering check" on the instrument panel: consult a Renault dealer.
  • If theaccompagné du
    warning light appears together with the message "Steering fault" on the instrument panel, this indicates a system fault.
vous impose unvous impose un
requires you to stop immediately and as soon as traffic conditions allow. Contact a Renault dealer.

If the underbody of the vehicle is struck (for example, against a kerb, a raised pavement or any other street furniture), you may damage the vehicle (deformation of an axle).

To avoid any risk of an accident, have your vehicle checked by a Brand Representative.

Test yourself

A quick Renault Laguna quiz: every answer comes with an explanation and a link to the manual page.