ABS sensor

OEM: 4MAX 5213-02-0201P 34520025724

Disassembled car photo

Engine running

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What is this part and why does it matter?

The ABS wheel speed sensor measures the rotational speed of each wheel, providing the data ABS and ESP systems need to detect wheel lock-up or loss of traction.

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Signs of a faulty part

If you notice any of the following, the part likely needs replacement:

  • ABS/ESP warning light on the dashboard
  • ABS not activating during hard braking, or activating incorrectly
  • Speedometer malfunctioning (on some vehicles that share this signal)

Installation information

Bolts near the wheel hub — check the sensor is clean and correctly positioned relative to the tone ring after installation.

Frequently asked questions

It’s mounted in an exposed position near the wheel, making it vulnerable to road debris, corrosion, and contamination from brake dust, which can damage the sensor or block its reading of the tone ring.

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