This repair guide will show you how to change the front wheel ABS sensor on Mercedes-Benz models such as E, SL and CLS models. Complete list of applications is shown at the bottom of the post.
A defective ABS sensor will illuminate the ABS, ETS, or ESP light on your instrument cluster. In rare cases, it may even set a check engine light or cuase your car to not shift and go into limp (safe) mode. With a bad wheel ABS sensor, the anti-lock brakes will not function properly and you increase the risk of skidding if you have emergency stops.
What is the wheel speed sensor replacement cost?
If you take your car to an independent mechanic you may be quoted between $200-$400. The dealer will cost even more.
You can perform this repair yourself and spend less than $50.
Where to buy cheap ABS Wheel Speed Sensor for Mercedes-Benz?
You can find new ABS sensor on Amazon.com in some cases as low as $30. Find the right ABS sensor for your Mercedes-Benz.
DIY How to replace front wheel ABS Speed Sensor. RPM Sensor Replacement Guide
First, loosen the lug nuts but do not remove them.
Second, raise the car using your jack.
Third, support your car with jack stands such as Torin T43002 3 Ton Jack Stands.
Remove Front Wheel
Remove the front wheel. Right behind the rotor you will see a couple of cables connected to two sensors. One wire goes to the brake pads which is the brake pad wear sensor. The second sensor goes to the ABS wheel sensor.
Remove hex bolt
The ABS sensor is held in place with a hex bolt which will require a 10mm wrench to be removed. The ABS sensor, also called RPM sensor, is located on the back of the steering nuckle.
Remove old sensor
Pull out the old sensor. You may have a plastic cover over the ABS sensor. Make sure to remove that before you pull out the ABS sensor. The plastic is typically held in place with clips that can be easily removed.
The ABS electrical wire is held in place by plastic clips. Pull the wiring harness away from the clips.
Disconnect ABS Sensor
Follow the ABS sensor cable to where it joins the connector under the front subframe. Unplug the old sensor from the connector. To get to the connector you may have to remove the wheel well liner.
2006 MERCEDES-BENZ CLS500 Front
2006 MERCEDES-BENZ CLS55 AMG Front
2007-2008 MERCEDES-BENZ CLS550 Front
2007-2008 MERCEDES-BENZ CLS63 AMG Front
2003-2008 MERCEDES-BENZ E320 Front
2006-2008 MERCEDES-BENZ E350 Front
2003-2006 MERCEDES-BENZ E500 Front
2004-2006 MERCEDES-BENZ E55 AMG Front
2007-2008 MERCEDES-BENZ E63 AMG Front
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