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Pelican Technical Article:

ABS Sensor Replacement

Steve Vernon

Time:

2 hours2 hrs

Tab:

$40 to $200

Talent:

**

Tools:

5mm Allen

Applicable Models:

VW Golf (2004-06)
VW GTI (2006-09)

Parts Required:

ABS wheel speed sensors, high temp grease

Hot Tip:

Check for fault codes before replacing

Performance Gain:

Repair faulty ABS sensor

Complementary Modification:

New brake pads

Like many modern manufacturers Volkswagen shares components and even platforms across its many model lines. This article is based on one of those shared components but the work may have been performed on a different model than your vehicle. While some fasteners and other hardware types and sizes may be different, all of the information you need to safely complete the project is included in this article. If you have any questions, comments or feedback please contact us using the comment section below or join us on one of the world's best automotive forums for additional assistance.

The ABS wheel speed sensor on the GTI Mark V monitors road wheel movement and sends an electronic signal to the ABS module. This signal is used to calculate road wheel speed to help with ABS braking and stability control features. When an ABS wheel speed sensor fails, the ABS module loses road wheel speed for the corresponding wheel and sets a fault code for ABS wheel speed signal. When a fault code is set, the ABS warning light will illuminate. You will have to scan the module and read the fault codes to determine which speed sensor is the problem. Keep in mind, other problems can illuminate the ABS warning light. Be sure to scan and read fault codes before you start replacing expensive parts.

In this article, I will go over how to replace the front and rear ABS wheel speed sensors on your GTI Mark V.

While you may be able to perform this work while lying under the car with the wheels on, if you are just starting to work on your own car or like a little more room to work, I recommend doing this job with the car safely in the air. Begin by jacking up and supporting the car. Please see our article on jacking up your VW. Remove the front and rear wheels. Always wear safety glasses whenever you work under your vehicle.

Starting on the front wheels, the speed sensor (red arrow) is located on the rear of the bearing housing by the tie rod.
Figure 1

Starting on the front wheels, the speed sensor (red arrow) is located on the rear of the bearing housing by the tie rod.

Begin by removing the electrical connection from the sensor.
Figure 2

Begin by removing the electrical connection from the sensor.

Next, use a 5mm Allen and remove the bolt holding the sensor in place (red arrow).
Figure 3

Next, use a 5mm Allen and remove the bolt holding the sensor in place (red arrow). It is torqued on at a very low value but may be corroded, so make sure you have the Allen well seated before loosening. You do not want to strip this bolt. The bolt securing the sensor is micro encapsulated, so if you are reusing it, you should clean it up and use a little blue Loctite when reinstalling it.

Use your hands and wiggle the old sensor from its mount.
Figure 4

Use your hands and wiggle the old sensor from its mount.

Clean the mounting area (red arrow) of any rust, grime or debris.
Figure 5

Clean the mounting area (red arrow) of any rust, grime or debris. Install new sensors with a thin coating of a high temperature grease to the ABS sensor and housing. Install the fastener and tighten. Make sure the sensor clears the toothed ring gear (yellow arrow).

Move to the rear of the car.
Figure 6

Move to the rear of the car. The speed sensor is located on the upper section of the trailing arm. Remove the electrical connection from the sensor.

Next, use a 5mm Allen and remove the bolt holding the sensor in place.
Figure 7

Next, use a 5mm Allen and remove the bolt holding the sensor in place. It is torqued on at a very low value but may be corroded, so make sure you have the Allen well seated before loosening. You do not want to strip this bolt. The bolt securing the sensor is micro encapsulated, so if you are reusing it, you should clean it up and use a little blue Loctite when reinstalling it.

Use your hands and wiggle the old sensor from its mount.
Figure 8

Use your hands and wiggle the old sensor from its mount.

Clean the mounting area (red arrow) of any rust, grime or debris.
Figure 9

Clean the mounting area (red arrow) of any rust, grime or debris. Install new sensors with a thin coating of a high temperature grease to the ABS sensor and housing. Install the fastener and tighten it. Make sure the sensor clears the toothed ring gear. Installation is the reverse of removal.










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Comments and Suggestions:
Bogieman Comments: Can the front sensor be changed without removing the front wheels and jacking up the car? Tks
October 18, 2016
  Followup from the Pelican Staff: No. At the minimum you have to jack it up. - Nick at Pelican Parts  
Joe Comments: good day,
I'm driving a golf 6 gti and I'm having a problem with my parking brake indicator light and accompanying alarm. Regardless of brake lever position, the light on the panel stays on.
May 13, 2016
  Followup from the Pelican Staff: Check if the switch for the handle is faulty. Try unplugging it, does the light go out? - Nick at Pelican Parts  
geramo Comments: thanks for your post ,all sorted and a happy driver once again good simple advice seldom goes wrong !
cheers
April 27, 2016
  Followup from the Pelican Staff: Thanks for the feedback. Glad we could help.
- Nick at Pelican Parts
 

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Page last updated: Wed 3/1/2017 02:37:13 AM