ABS (Anti-brake system)
*Image is for representation purpose only. Actual part may vary
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What is an ABS Pump?
An ABS pump is also called the ABS modulator, Hydraulic Control Unit (HCU), or even ABS motor. It typically comprises an electrical motor, ABS valves operated by solenoids, and a base where brake hoses (from the master cylinder to brake calipers at each wheel) are connected.
The ABS pump is controlled by the ABS controller, which is also known as the ABS module or ABS ECU. The ABS controller is a computer that receives signals from the wheel speed sensors and other sensors, such as the brake pedal switch, the steering angle sensor, and the yaw rate sensor. The ABS controller then calculates the optimal brake pressure for each wheel and sends commands to the ABS pump to adjust the pressure accordingly.
Replacement ABS control modules
Replacement ABS control modules are expensive because their inner hydraulics and electronics are difficult for the average DIYer to service. Some ABS modules are separated from the Hydraulic Control Unit, but many of them will come as a unit. Many people consider buying a used ABS control module instead. Secondhand ABS control module sellers pull the modules from older scrap yard vehicles and refurbish them for new users. But are these used parts worth what you’re paying?
Benefits
The main benefit of used ABS modules is that they’re much cheaper than new modules. Also, if the module is from a reputable source, it provides similar output to a brand-new one. It also helps the environment by reducing the waste in junkyards and keeping materials out of the landfill. Using an OEM component, even if it’s secondhand, also helps increase your vehicle’s lifespan thanks to its custom fit.
