How to monitor wheels while driving using VAG-COM?

[mcanedo92588]

So I am having an ESP issue, and someone I am talking with who worked at Audi for like 10 years said it is probably my wheel speed sensors. He told me to have it run a scan of my wheels while driving to see if one of them is spinning at a different rate than the others or not registering at all. I ran a generic scan and there are no fault codes present, so that is why we are pretty sure this is the issue. He has hasn't used one of the newer scanners in a while, so he doesn't remember 100% how to do it otherwise he could have helped, and he recently moved out of state so I am on my own. Wanting to try and get this figured out myself without having to spend $120-140 just to have the dealership tell me to replace a sensor for $300 that I could do myself for $50. Anyone have any ideas how to monitor my wheels while driving with VCDS?

[old guy]

Go to the ABS module. Blocks 1, 2, 3,and 4 measure the four different wheels speeds from 1 to 20 km/h.

OBD only operates up to speeds of 20 km/h. Channels 1 - 4 indicate wheel speed in km/h which is calculated by the ABS controller as it counts the pulses from the wheel speed sensors. If the car is moved evenly on a dry surface, a deviation of +/- 1 km/h is permissible. If the difference is greater than that the wheel speed sensors should be checked.

And something else to try: Clicky click

[mcanedo92588]

Yes, this is exactly what I was needing!

Thank you so much, I wasn't able to find all this information together like this in one place, I was trying to piece together some info I found on VWVortex and Ross-Tech's website and it was getting a bit hard to follow two different things. When I got it up and running, I wasn't aware of the 20 km/h limit, and when I hit 21, it said the controller couldn't be read. Don't know if this is normal for it to just basically shut down once you go over the max speed, but that is what happened. I am going to drive slow around my neighborhood here again in a bit, but the ONLY thing I really saw from that time was my drivers side rear wheel was slightly laggy compared to the other 3. I hit about 4 km/h and it kind of stopped for a second while the others went up to about 6, then it caught up at 6 and stopped again for a second until up to 10 km/h when it ended up matching up with the other wheels up until 21 when it shut off. If there is a suspect wheel speed sensor, I would put my money on that wheel.

Will report back shortly for further verification, and if anyone else is having the same or similar issue!

[mcanedo92588]

Ran the scan again, for the most part everything looked pretty much good. The rear left wheel again was sometimes falling behind a bit for a second or two, but nothing appeared to be off the charts abnormal. Again though, I was only able to test at speeds of about 10-12 mph so not super helpful. Going to see if I can have someone look at it for me rather than the dealership.

[AudiWoo]

My experience with intermittent wheel speed readings turned out to be the ABS module.

[mcanedo92588]

My experience with intermittent wheel speed readings turned out to be the ABS module.

That is what I am being told, looks like possibly my left rear sensor. I was looking at parts on ecstuning and it says if you have auto leveling headlights you have to get a specific part that only works for either the left or right side, you can't get the generic part that works for both sides because of the leveling sensor? Anyone have the right part number for this piece? Think I found one used on ebay, and one new on ebay. Also, I only found a really vague verbal write up for removal and install, anyone have a more detailed description than this? --> Here

http://www.ebay.com/itm/141058199566...84.m1423.l2649
http://www.ebay.com/itm/120973517364...84.m1423.l2649

[AudiWoo]

I did my front drivers side (auto level) and it was the same part for left/right in the front as far as I know. The sensor is held in with a single socket cap bolt, not sure what they were going on about in that writeup? Don't see why you would need to go to that extreme unless you were replacing the ring or everything was badly seized/rusted.