Service Overview

ABS (or anti-lock braking system) is what keeps your wheels gripped to the road when braking sharply and prevents them from locking up to keep you in full control. The hydraulic unit in the ABS system works by equalising the pressure on each individual brake or adjusting it to stop the car from skidding or veering.

Along with the ABS sensor, the hydraulic unit is an important component in terms of your car's safety, and we advise giving it the same TLC as the rest of your vehicle. The hydraulic unit contains valves and pumps that modulate the brake pressure to prevent wheel lock-up during emergency braking situations.

Frequently Asked Questions

The hydraulic unit is a crucial component of the ABS system. It contains solenoid valves and a pump that work together to modulate brake pressure. When the ABS controller detects wheel lock-up, it signals the hydraulic unit to rapidly pulse the brakes, preventing the wheels from locking while maintaining maximum braking force.

ABS warning light illuminated on dashboard
Unusual noises from the ABS pump
Brake pedal pulsating when it shouldn't
Brakes locking up during normal braking
Loss of brake fluid without visible leaks

The hydraulic unit works by receiving signals from the ABS controller. When wheel lock-up is detected, the unit's solenoid valves rapidly open and close to modulate brake pressure. The pump restores pressure after the valves release it, creating the characteristic pulsing sensation in the brake pedal during ABS activation.

While your conventional brakes will still function with a faulty ABS hydraulic unit, you will lose the anti-lock functionality. This means your wheels could lock up during emergency braking, potentially causing loss of steering control. We recommend having the system inspected and repaired as soon as possible.

ABS Hydraulic Units Repair & Replacement

Service Overview

Frequently Asked Questions

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