Blog Categories: ABS & Braking

Illustration of an ABS wheel speed sensor with its mounting flange, cable and two-pin plug on a workshop bench

Wheel Speed Sensors Explained: Types, Fault Signs and When the ABS Module Is to Blame

Summary: A wheel speed sensor is the small magnetic sensor at each wheel hub that reports how fast that wheel...
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A car ABS hydraulic modulator unit on a workshop bench: the cast aluminium pump motor drum on top, the machined valve block below it with a row of four threaded brake pipe ports along its lower edge and the pressure sensor set into the adjacent face, and the black electronic control module forming the base with its multi-pin connector, ready for circuit-level repair

ABS Pump and Module Repair Cost in the UK

Summary: Most people reading this already have a figure in their head — a garage quote, a dealer price, or...
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Illustration of a car cornering on a wet road with red stability-control sensor arcs holding it on its line

ESP Light On: What It Means, and What ESP Does

Summary: A steady ESP light means the car’s stability control has found a fault and switched itself off, so it...
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Genuine Audi TT ABS pump (hydraulic modulator) — the electric pump motor, machined-aluminium hydraulic control unit and ABS ECU that make up a complete ABS unit

What Is an ABS Pump? Components, How It Works & Failure Signs

Summary: An ABS pump is the electro-hydraulic unit that controls brake pressure at each wheel independently during anti-lock braking. Fitted...
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How To Test & Replace ABS Reluctor Rings

Summary: The ABS reluctor ring (also called a tone ring or ABS ring) is the toothed component that rotates with...
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ABS warning light lit on the dashboard of a right-hand-drive UK car with the ignition on

How to Diagnose an ABS Pump Constantly Running

Summary: An ABS pump that runs continuously — humming or whirring even after the ignition is off — is a...
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