frequently asked questions

Brake Failure Risks in Heavy Vehicles

Brake Failure Risks in Heavy Vehicles

In commercial and heavy-duty vehicles in particular, the Anti-lock Braking System (ABS) is essential for maintaining stability and control during emergency braking conditions. The wheel speed sensor and the wiring that goes with it are the primary components of this system. The entire ABS system may malfunction if the sensor cable is broken or severed, leaving the car at risk in emergency situations. So, what should you do if your ABS sensor cable breaks, and what are the repercussions?

How Sensor Cable Damage Affects Your Vehicle

ABS sensor cable sends real-time data about wheel rotation speed to the Electronic Control Unit (ECU). If this cable is broken, the ECU can no longer interpret wheel behavior, which disables the ABS. This can lead to:

  • Loss of ABS functionality

  • Longer stopping distances, especially on wet or icy roads

  • ABS warning light appearing on the dashboard

  • Increased chance of wheel lock-up during hard braking

  • Reduced steering control in sudden stops

In trucks equipped with

disc brake systems, ABS failure can result in more serious consequences due to higher braking forces involved.

The Ripple Effects of ABS Sensor Cable Failure

Modern commercial vehicles are increasingly integrated with electronic systems that rely on wheel speed data. Beyond ABS, systems like Traction Control and Electronic Stability Control also suffer when a sensor cable is damaged. As a result, drivers may encounter:
  • Uneven braking force distribution

  • Traction loss on uneven or slippery terrain

  • Greater difficulty in managing cargo weight under braking

  • Premature wear of href="https://www.eku.com.tr/en/brake-shoe">brake shoes, drums, or discs

For vehicles operating on inclines or carrying heavy loads, such malfunctions can severely compromise road safety and vehicle performance.

Immediate Steps You Should Take

If the ABS warning light turns on or unusual braking behavior is noticed, immediate action is critical. Here’s what you should do:

  • Pull over to a safe location and avoid further driving.

  • Use an OBD scanner to retrieve fault codes.

  • Check the cable for visible damage, corrosion, or disconnection.

  • Replace the sensor cable if necessary.

  • Inspect the overall braking system — including brake drums, pads, and calipers — for any related wear or damage.

Delaying these actions can result in higher repair costs or even roadside breakdowns.

Proactive Measures to Prevent Cable Damage

Routine maintenance is the best way to avoid sudden sensor failures. For heavy-duty vehicles, prevention means:

  • Conducting regular inspections during service intervals

  • Protecting cables from exposure to abrasion or mechanical stress

  • Cleaning sensor connectors to prevent oxidation

  • Using high-grade components such as premium brake drums and truck disc brakes

EKU are known for manufacturing robust brake parts designed to withstand the demanding conditions of long-haul transport. This helps reduce the chance of component failure.

Don’t Underestimate Brake System Warnings

It can be fatal to ignore early warning indications of ABS or sensor cable failure. The driver and bystanders are at risk due to the weakened emergency braking capability. It is essential to make timely repairs and invest in dependable parts.

With advanced brake components from EKU, commercial fleets can maintain peak performance and avoid costly downtimes. If you suspect any brake-related issues, seek professional help without delay.