Mercedes-Benz ABS Module Repair – Speed Sensor Fault / Internal Error

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From January 1st, 2026, we will be strictly Trade Only for New Zealand Info here

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 go ahead with the repair, we’ll put this towards the total cost. Our full terms of trade is the link can be found here

International Customers:
When sending a unit from overseas, please declare it as “Repair and Return” with a low customs value (around $100 USD) to avoid unnecessary import fees. - All Repair Prices are quoted in NZD



Mercedes-Benz ABS Module Repair – Speed Sensor Fault / Internal Error
Part Numbers: A1664316612, A 166 431 66 12, A1669013400, A 166 901 34 00, A1669014100, A 166 901 41 00

This is a repair service for the ABS module commonly found in Mercedes-Benz models, which may be suffering from:

  • Loss of wheel speed sensor signal (intermittent or permanent)

  • Internal control unit failure

  • Communication issues or fault codes relating to speed signal processing

Our service includes a full diagnostic, internal inspection, and component-level repair. We thoroughly test the repaired module on our in-house bench test rig to confirm correct operation before dispatch.

Important: The most commonly reported fault is the loss of wheel speed signal, even when the wheel sensors and wiring are confirmed good.

Questions about this repair?