Hot answers tagged

3

The wheel speed sensor is in the proximity of the wheel bearing. Lack of a speed signal from one of these sensors could trigger any of these warnings. Have the mechanic check the sensors, their positioning, and their connections and wiring. Also, I understand that on this car the encoder ring for the sensor may be built into the bearing or seals and can ...


3

So I may be able to answer myself finally. After some more research I found that there may be some confusion in how the systems are named. What is meant by a brake-by-wire system is usually a braking pedal that is mechanically decoupled from the rest of the braking system. This is different from what I actually need to do, because I do not need any pedal ...


3

Looking at the reset procedure for the SAS (Steering Angle Sensor) on Ross Tech VCDS wiki here it would appear that within this software measuring blocks 08 groups 007 is returning real-time steering angle data in degrees. Where this data is located other than that I'm afraid I don't know. The part number for the SAS on VAG cars appears to be 1J0-959-654-J ...


2

I'm not very familiar with the pure brake by wire setups where the brake pedal is completely decoupled from the hydraulics, or the systems where they're using regenerative "load" style brakes. In a electronically controlled system where your pedal is still coupled to the hydraulics, there is an ABS unit that all the brake lines run through. This has motors ...


2

The fact that there is no fault codes or ABS light it probably means that there is either a mechanical fault with one of the wheel speed sensors or a intermittent short circuit. I've seen many things before that cause this: 1. Worn/Rusted exciter ring, usually either on the hub or the driveshaft it will be magnetic or a toothed ring. It could be corroded or ...


2

You don't need to take the car to a dealer. If your mechanic can't do basic troubleshooting than find another mechanic or work on the car yourself. Honestly they should of taken care of the problem to begin with. Are these press in bearings or are they bolt-in hub and bearing? Is the tone wheel part of the CV shaft or is it a magnetic ring on the bearing? ...


1

The original ABS systems only modulated pedal pressure. Some systems only worked on two of four wheels. "Better" or later systems could modulate all four wheels. Even more developed was the ability to modulate each wheel independently. Modern systems have an electric pump, which pressurizes a reservoir. Sometimes you can hear them whine for a few ...


1

It's a generic code, an OBD2 scanner isn't enough. You'd need to have someone with an Enhanced OBD2 scanner to pull any codes from the EBCM. Wheel speed sensor codes are common. Check the mounting ring in the rears they tend to rot away leaving the sensor hanging. Check the encoder rings for damage or debris. You could also scope the sensors. They're an ...


1

I believe this is because when you brake, your tires slip different amounts. If ABS equally turned on/off the brakes then you could start spinning. But if vehicle detects that you will start spinning. Vehicle systems can try to counteract this by regulating the on/off times of the brakes. Therefore it may turn on the stability control light. This may be even ...


1

On the systems I am familiar with the ABS module (which is a part under the bonnet through which all of the brake pipes are routed) is able to electronically apply or remove hydraulic pressure to a specific brake line (thus braking or releasing the brake on a specific wheel). These modules are pretty expensive to replace too!


Only top voted, non community-wiki answers of a minimum length are eligible