kgiessler

Hi All,

I have a 2004 A4 3.0 Quattro Cabriolet. Very often, my speedometer goes dead, the ABS light and MIL light go on. My VAG-COM is giving me this fault code:

Address 03: ABS Brakes Labels: 8E0-614-517.lbl
Part No: 8E0 614 517 A
Component: ABS/ESP allrad 3429
Coding: 04497
Shop #: WSC 00672

1 Fault Found:
00283 - ABS Wheel Speed Sensor; Front Left (G47)
30-10 - Open or Short to Plus - Intermittent

Has anyone fixed this problem before and can help me out?

I tried cleaning the connections off with WD40 to no avail, so it appears I'm going to have to replace the sensor. The Bentley manual offers very little help, and in fact I don't think its instructions are even correct.

It looks to me like the wire for the sensor goes either into the caliper housing, or somewhere behind the rotor. It really looks like I have to remove the caliper housing to get it at, but the manual says I just need to pull out a grommet.

I'd like to buy the part before I take my wheel apart, but I can't see it, so can anyone tell me if this is the right part:
http://www2.partstrain.com/store/?Ntt=Speed%20Sensor&N=1574%209598%204294967027

And here is a link to the Bentley instructions. Am I correct, or are they?
http://kurtgiessler.com/abs.pdf

Any help you can offer is hugely appreciated. The top does not work when the error comes up because it checks the speedometer before activating. So I have to put my top up and down using the key in the door...

Thanks,
Kurt

nanotech

Should be a sensor with wire attached, that plugs into the wheel bearing housing, behind the brake rotor/dust shield/etc. The wire runs up to a grommet in the wheel well at the top, and I believe to a connector behind the grommet. The sensor and wire are all one piece, I think. I'll be under there tonight looking at a related issue so I'll check for you to see if there's a connector between the wire and sensor itself.

The actual sensor is attached to the wheel hub, behind the rotor. You do not have to remove the brake caliper to get at it. If you take off the wheel, you will see the abs sensor on the front side of the hub, ie facing the front of the car. I don't know exactly how it removes but suspect it just pulls out after unbolting.<ul><li><a href="http://www.genuinevwaudiparts.com/partlocator/index.cfm?action=getLocator&amp;siteid=214407&amp; chapter=EPA259&amp;appSectionid=18&amp;groupid=100 02&amp;subgroupid=60630&amp;make=2&amp;model=A4%20 Cabriolet&amp;year=2004&amp;catalogid

kgiessler

So thats the grommet they are talking about...up at the top. I thought the grommet was supposed to be on the wheel hub.

Ok, I now know what the sensor, it was not what I was thinking it was.

Thank You so much. Now I'm wondering what I thought was the sensor...there is a wire that goes into the caliper, and comes off of the same connector as the wheel speed sensor.

tonyj

That is the wire for brake pad wear sensor

kgiessler

I wanted to check back and let everyone know that I got it fixed.

I bought the part you recommended at genuinevwaudiparts.com ( http://www.genuinevwaudiparts.com/partlocator/index.cfm?action=getLocator&amp;siteid=214407&amp; chapter=EPA259&amp;appSectionid=18&amp;groupid=100 02&amp;subgroupid=60630&amp;make=2&amp;model=A4%20 Cabriolet&amp;year=2004&amp;catalogid=1 )

A much better diagram was just a page before in the bentley, but I missed it because I was relying on the search function and not browsing correctly. It showed the sensor clearly,

Its actually a very simple fix, but if anyone needs any help, you can contact me through this message board, or email me by taking my username and adding at gmail.com

Thanks for the help.

nanotech

Great, glad I helped

gerard_b6s4

Hi i have 03 s4 with same problem
no speedo, abs fault etc..
showing wheel speed sensor and abs fault

is it possible the speed sensor could fix two issues>?