Renault Braking System Fault (Causes and How to Fix)

Renault’s braking system is designed to ensure the safety of both the driver and passengers by allowing them to stop the car smoothly and effectively. 

However, like any other mechanical component, the Renault braking system is susceptible to faults that can affect its overall performance. One such fault is the Renault braking system fault which can be caused by a range of issues. 

The most common causes of a Renault braking system fault are air in the brake line, low brake fluid levels, or a faulty brake master cylinder. To fix the problem, start by bleeding the brake line and adding fresh brake fluid. If the problem persists, you may need to replace the brake master cylinder.

In this blog, we will discuss the common causes of Renault braking system fault and provide solutions to fix them. So, let’s dive in!

What Does Braking System Fault Mean On A Renault?

A braking system fault on a Renault refers to a problem with the vehicle’s braking system that has been detected by the onboard computer. The fault could be caused by various factors. When the system detects a fault, it generates an error code that can be read using a diagnostic tool. 

What Does Braking System Fault Mean On A Renault

It is essential to address the fault promptly as it poses a risk of brake failure, which could compromise the safety of the vehicle and its occupants. Symptoms of a braking system fault include an illuminated ABS light on the dashboard, unusual noises, vibrations, or poor braking performance.

What Causes Braking System Fault On A Renault?

Like any other vehicle, Renault cars can experience faults, particularly with the braking system. Here are some possible causes of braking system faults on a Renault.

Worn Brake Pads

One of the most common causes of braking system faults in Renault cars is worn brake pads. Brake pads are designed to wear over time, and when they get too thin, they may fail to provide adequate stopping power. This can lead to longer stopping distances, and in extreme cases, brake failure.

Faulty Wheel Speed Sensors

The anti-lock braking system (ABS) on Renault cars relies on wheel speed sensors to detect wheel lock-up and adjust braking pressure accordingly. If one or more of these sensors is faulty, the ABS system may not function correctly, resulting in a braking system fault.

Low Brake Fluid Levels

The braking system on Renault cars relies on hydraulic pressure to operate. If the brake fluid level in the reservoir is too low, this can result in a loss of pressure and reduced braking performance. In extreme cases, this can lead to brake failure.

Faulty Brake Calipers

The brake calipers on Renault cars are responsible for applying pressure to the brake pads when the brake pedal is depressed. If a caliper is faulty, it may not apply the correct amount of pressure, resulting in reduced stopping power and longer stopping distances.

Blown Fuse

If the ABS light on the dashboard of a Renault car illuminates, this may indicate a blown fuse. A blown fuse can cause the ABS system to fail, resulting in a braking system fault.

Worn Wheel Hubs

The wheel hubs on a Renault car are responsible for connecting the wheels to the vehicle’s suspension. If the wheel hubs become worn, this can cause the wheels to wobble, leading to reduced braking performance and longer stopping distances.

How Do You Diagnose A Brake System Problem?

In case of any brake system problem, it is essential to identify the issue promptly to avoid the risk of brake failure. Here we will provide a brief guide on how to diagnose a brake system problem on a Renault.

  • Check the Brake Pedal And Steering Wheel: The first step is to check if the brake pedal and steering wheel vibrate or pulsate when applying the brakes. This could indicate warped brake rotors or drums.
  • Inspect the Brake Pads And Calipers: Inspect the brake pads and calipers for wear or damage. Worn-out brake pads or stuck calipers can cause the brakes to make a grinding noise or pull to one side when applying the brakes.
  • Check the Brake Fluid Level: Check the brake fluid level in the brake fluid reservoir. Low brake fluid level or contaminated brake fluid can cause a decrease in braking power.
  • Inspect the Wheel Speed Sensors: Wheel speed sensors can malfunction, causing the anti-lock braking system (ABS) to engage when it shouldn’t. Check the wheel speed sensors and the ABS sensor wiring for any damage or disconnection.
  • Check the ABS Light: If the ABS light is illuminated on the dashboard, it indicates a fault in the ABS system. Use a diagnostic tool to read the error code and identify the problem.
  • Inspect the Brake Lights: Check the brake lights to ensure they are functioning correctly. If the brake lights do not illuminate when the brake pedal is depressed, there may be an issue with the brake light switch.
  • Inspect the Parking Brake: Inspect the parking brake for any damage or signs of wear. A faulty parking brake can cause the vehicle to roll away when parked.

How to Fix Renault Braking System Fault?

Renault braking system fault is a serious issue that requires immediate attention to ensure the safety of the vehicle and its occupants. Here are some steps to fix the issue.

How to Fix Renault Braking System Fault

1. Check for Error Codes and ABS Light

The first step is to check for any error codes on the vehicle’s computer using a diagnostic tool. The error code will help identify the problem with the braking system. Also, check for the ABS light on the dashboard, which indicates a fault in the anti-lock braking system.

2. Inspect Brake Pads and Calipers

Inspect the brake pads and calipers for wear and tear, which may cause the braking system to fail. If the brake pads are worn out, replace them immediately. Similarly, if the calipers are damaged, they should be replaced or repaired.

3. Check Brake Fluid Levels

Check the brake fluid levels in the reservoir, located under the hood of the car. Low brake fluid levels can cause the brakes to fail, so it’s essential to keep them topped up. If the brake fluid levels are low, add more fluid to the reservoir.

4. Inspect Wheel Speed Sensors and Wheel Hubs

The wheel speed sensors and wheel hubs are critical components of the anti-lock braking system. If they are damaged or dirty, they can cause the ABS to malfunction. Inspect these components for any damage or debris, and clean or replace them as necessary.

5. Inspect the Electronic Parking Brake

If the Renault braking system fault is related to the electronic parking brake, check the fuse and wiring. If the fuse is blown, replace it. If the wiring is damaged, repair it.

6. Inspect the Steering Wheel and Braking Conditions

If the Renault braking system fault occurs while turning the steering wheel, check the stability control light, which could indicate a fault in the system. Also, check the braking conditions, especially in harsh weather conditions, which could cause the brakes to fail.

7. Inspect the Parking Brake and Brake Lights

Check the parking brake and brake lights for any faults or damage. If the parking brake is not functioning correctly, it can cause the brakes to fail. Similarly, if the brake lights are not working correctly, other drivers may not be aware that the vehicle is slowing down or stopping.

Final Thoughts

You may understand that the Renault braking system fault is a complex issue that can result from a variety of causes. The most common cause is a faulty ABS control unit, but it can also be caused by a faulty brake light switch, a faulty brake pedal position sensor, or a malfunctioning brake servo. 

To fix this issue, the faulty component must be identified and replaced. Generally, this requires the help of a professional mechanic or a certified Renault technician. In any case, identify and repair the braking system fault as soon as possible to ensure a safe and secure driving experience.