Anti-lock Brake System (ABS) Sensors

Technology such as anti-lock brakes (ABS) and electronic stability are now common place thanks to the ABS sensor or wheel speed sensor. A small device, it has a big role to play; monitoring the wheel’s speed and rotation to prevent the brakes from locking. So, it’s important to always fit an OE quality part - anything less could compromise the effectiveness of these safety critical systems. Featuring weather pack connectors and plated pins, and rigorously tested to OE standards, Delphi ABS sensors deliver optimum signal stability and reliability in all conditions, for an accurate, long-lasting sensor that you can fit with confidence.

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Latest OE technology

Our ever-expanding range of ABS sensors features the latest digital signal technology. By creating a digital, square wave, Delphi magneto resistive and hall effect sensors only change frequency, not amplitude, improving accuracy, especially at lower speeds. They can also detect the direction of the wheels; forward, reverse and even stop. This is vital for hill hold control, autohold and automatic parking assistance technologies.

Protection from the elements

Given its position, the ABS sensor is particularly vulnerable to contamination from dirt and moisture. That’s why Delphi ABS sensors feature weather-pack connectors that lock out dirt, moisture, chemicals and other contaminants, coupled with plated pins for even great corrosion protection and improved conductivity.

Extreme testing

Water, heat and vibration can all affect a sensors characteristic. So we subject all our sensors to extensive thermal, shock and vibration testing just to be sure. With test temperatures ranging from -40 o C to 140 o C, we know they’ll perform even in the most challenging conditions. Delivering optimum stability and reliability at all times.

Easy installation

For right-fist-time fitment, Delphi ABS sensors are designed to match the OE. With like-for-like mounting and connector designs and wire lengths, technicians can fit quickly and easily, straight from the box.

The complete solution

As well as a growing range of ABS sensors, we also offer advanced diagnostic capability including the ability to read live fault codes and individual wheel speed data, essential repair data through our vehicle technical information package, and expert training and technical support.

The Delphi Difference

100 years of OE experience, supplier to the world’s top automakers
OE heritage and knowledge built into every aftermarket part
Comprehensive portfolio for a wide range of vehicles and model years
Streamlined SKUs for easy inventory management
Support through tools, tips and training

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1 min read

How to calibrate air suspension

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Maintenance Solutions Steering & Suspension How to Technicians 1 min read

Resource Highlights

We all want a smooth ride when driving, and an air suspension system offers many benefits for reducing noise, vibration and discomfort. Like many in-vehicle systems, calibration is needed from time to time, especially when a part is replaced.

Watch the video below to follow our Delphi expert as he takes you through the steps needed to calibrate the air suspension on a BMW X5.

Although the procedure is fairly straightforward, there are some essential ‘watch-outs’ which we cover in the video, including:

• A vehicle having full or part air suspension
• The difference between static and dynamic calibrations
• The vehicle status when running the calibration

Will the suspension system be the same for all four wheels?

Not necessarily. Some air suspension vehicles can have full air springs (front and rear), or have a mix of coil springs and air springs (one front, the other rear).

When do I need to perform a height calibration on the air suspension system?

The calibration would normally be performed after completing one of two jobs:

1. An air spring replacement
2. A damaged height sensor replacement

What’s the difference between a static calibration and a dynamic calibration?

Some vehicles will only require a static height calibration which can be completed in the workshop. However, some models will need a static calibration and then also a dynamic one, which is performed whilst the vehicle is being driven on the road.

Before I run the calibration, is there anything I need to do?

You need to ensure that after completing a replacement job on an air spring or height sensor, the air system of the vehicle is refilled. You do this by running the function ‘Filling the bellows’ using the Delphi BlueTech VCI diagnostic tool.

After that, head into the ‘Body control’ module. Go into ‘Adaptations and calibrations’ subsection and run the function ‘Height level adjustment.’

Why is it important to be out of the vehicle when running the calibration?

The vehicle’s load must not change during the calibration. So, if anyone was sat in the vehicle, any movement would adjust the vehicle’s height, disrupting the calibration. Follow manufacturers instructions, for example weighting the car correctly, ensuring it is on level ground with the steering wheel straight and the tyre pressure set correctly for the procedure to be successful with no inconsistencies.

Should I plug in an EV vehicle when calibrating the air suspension?

On an EV enabling ‘Ready’ mode or similar will ensure that the DCDC converter will support the low voltage battery. If this isn’t possible, it’s a good idea to ensure that you have battery support attached, so that there’s no drop in voltage during calibration.