Land Rover Defender ABS Valve Block & Motor Assembly Repair – WABCO

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Price Exclusive of GST

Our minimum assessment fee is $150 + GST (Excluding Headlights). This just covers the time to check the unit over. If you proceed with the repair, we’ll apply this to the total cost. Our full terms of trade can be found here. 

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Land Rover Defender ABS Valve Block & Motor Assembly Repair – WABCO

Part No. 478 407 022 0 / SRB 500041 03 007839

101540 02 002446

#26414

This is a repair service for the WABCO ABS valve block and motor assembly fitted to Land Rover Defender models. These units are known to develop a range of hydraulic and electrical faults that affect braking performance and may trigger ABS warnings or failure modes.

Common Faults We Repair:

  • Blocked solenoid valves (causing uneven braking or warning lights)

  • Motor failure (ABS pump not activating or low pressure faults)

  • Internal or external fluid leaks (from seals or pressure chamber)

  • Shuttle valve switch failure (a common cause of the “Three Amigos” warning lights)

Applies To:

  • Land Rover Defender (various models equipped with WABCO ABS)

  • WABCO Part Number: 478 407 022 0

  • Land Rover SRB Number: SRB 500041 03 007839

Service Includes:

  • Disassembly and ultrasonic cleaning of valve block

  • Motor function testing and repair/replacement if needed

  • Resealing and replacement of worn seals

  • Shuttle valve and sensor circuit repair

  • Final bench testing for flow, pressure, and electrical integrity