mercedes benz abs sensor replacement

Mercedes-Benz ABS Wheel Speed Sensor Replacement DIY

Is your Mercedes-Benz ABS light on due to a faulty wheel speed sensor? Learn how to fix the problem by replacing the ABS wheel speed sensor of your Mercedes-Benz.

This guide provides instructions on changing the ABS wheel speed sensor on the Mercedes-Benz S-Class W221 chassis. This mainly applies to S350, S550, S400, S600, and S63 AMMG from 2006 to 2013.

What you will need

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  • Mercedes ABS Wheel Speed Sensor
  • Allen Key Set
  • Floor Jack
  • Jack Stand
  • Flathead Screwdriver

Instructions

Here is how to change the ABS wheel speed sensor on a Mercedes-Benz W221.

  1. First, read the fault codes with a Mercedes-Benz scanner to determine which sensor is faulty.
  2. Jack up the vehicle near the wheel with the bad ABS sensor and secure the vehicle with jack stands.
  3. Locate the ABS wheel speed sensor behind the rotor. Use an Allen key to remove the ABS sensor bolt. Mercedes W221 ABS sensor location
  4. Remove the ABS wire from the vehicle. Mercedes W221 ABS sensor wire
  5. Remove the C clip that secures the connector using a flathead screwdriver. W221 S550 abs sensor
  6. Pry out the ABS connector. The ABS connector and the suspension ADS connectors are joined together but can be separated. W221 sensor wire abs mercedes benz
  7. Remove the old ABS sensor and install the new sensor in reverse order. Install new W221 abs wheel speed sensor

The ABS light, traction control light, and stability control will be on. Once you start the vehicle and drive for a minute, it will reset automatically. If the ABS light does not reset, you have other problems with the ABS that need to be addressed.

We hope you find the Mercedes-Benz ABS Wheel Speed Sensor Replacement DIY guide helpful. Check these troubleshooting and repair guides for more help on your Mercedes-Benz.

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