MK5 Golf GTI

All Things Mk5 => How to Guides / Troubleshooting => Topic started by: bower on October 11, 2013, 07:55:47 pm

Title: speed sensor problem
Post by: bower on October 11, 2013, 07:55:47 pm
i changed my rear speed sensor on tuesday and finally got rid of the esp/abs/tyre deflation lights showing up. its been fine all week but then today the lights have started coming back on again  :confused: anyone got a clue what could be the reason theyve started again?
Title: Re: speed sensor problem
Post by: Eddie-NL on October 11, 2013, 08:00:44 pm
have you scanned the car?

see what faults show up

genuine part?
Title: Re: speed sensor problem
Post by: doylebros on October 11, 2013, 08:08:53 pm
Still think as I said in the last post


You really have to remove the disc but the hub is favourite for the ring corroding and giving that fault.

Part no:- 1T0 598 611 subject to year and diameter remark if it's the hub!

Price TPS £130.39 inc vat but full retail.

Sensor part No :- 1K0 927 807 - supersession to WHT 003 859 - price TPS £72.95
Title: Re: speed sensor problem
Post by: bower on October 11, 2013, 08:24:45 pm
i had it scanned before i changed it thats how i knew which sensor it was. i havnt got vag com so dont want to shell out more money getting it scanned again. i got a bosch sensor @£45 so assume thats decent enough.
i havnt got the tools to remove the disks and stuff, but if it was the ring that was broken why has it been ok for 3 days? if it was the ring to start with then the lights wouldnt have gone off when i changed the sensor :confused:
Title: Re: speed sensor problem
Post by: doylebros on October 11, 2013, 08:31:26 pm
The ring corrodes and gives the problem you've got. However, it's not sold as an item it come as part of the kit so you've got to destroy a perfectly good item eg wheel bearing to get to the ring,which is a push fit on the hub.

It is possible the harness on the vehicle is defective but a wiggle test with a multimeter would check that!
Title: Re: speed sensor problem
Post by: doylebros on October 11, 2013, 08:35:59 pm
Go here it shows the ring I'm on about

http://www.google.co.uk/search?q=mkv+rear+wheel+hub+image&ie=UTF-8&oe=UTF-8&hl=en-gb&client=safari#biv=i%7C32%3Bd%7CfXR5DChqB5QqhM%3A

It's the image with the 2 year symbol on it - that's what the sell to facilitate the repair.
Title: Re: speed sensor problem
Post by: bower on October 11, 2013, 08:37:45 pm
yeah ive heard that, i had my fingers crossed that wouldnt be the problem. i still dont get why its been ok for 3 days but as u said its maybe the harness, how do u check it?
thanks
Title: Re: speed sensor problem
Post by: doylebros on October 11, 2013, 09:34:42 pm
You'll have to search on you tube,I've seen both items explained on there but for me to explain it would start, "Once Upon A Time"

Both are not hard with the right tools but you seem to have very little of them at your disposal.
Title: Re: speed sensor problem
Post by: bower on October 11, 2013, 10:02:31 pm
well ive got a mulitmeter thats why i asked how u check it. will check on internet
Title: Re: speed sensor problem
Post by: bower on October 12, 2013, 10:18:40 am
well been for a drive today and realised the lights are coming on when i get over 40mph, before i changed the sensor they was coming on at 5mph, so im guessing the new sensor has to be ok and its got the be the ring so will get the tools the remove the brakes. can the brakes be replaced on axle stands? ive read the bolts can be very tight and u may not be able to get leverage on stands?
Title: Re: speed sensor problem
Post by: bower on October 12, 2013, 12:24:01 pm
well cant get the m14 carrier bolts off so looks like jobs f**ked cos i cant even inspect the ring to see if its damaged or not, so looks like i will have to pay the a garage to change the wheel bearings and hope that sorts the problem. mot due next week too
Title: Re: speed sensor problem
Post by: doylebros on October 12, 2013, 05:44:42 pm
Sorry to read you couldn't make progress, that issue with the carrier bolts is the only niggle in the inspection.

However, the wheel bearing can turn very nasty so may be for the best - never had a fault with the loom personally but plenty exciter rings have corroded away requiring bearings to be fitted!
Title: Re: speed sensor problem
Post by: bower on October 12, 2013, 06:27:54 pm
Finally managed to strip my brakes to have a look if in reluctor ring was damaged, but where is it? Is it different on these? There is a plastic coating on the edge which the speed sensor is close too is that it? There no toothed metal ring at all
(https://fbcdn-sphotos-g-a.akamaihd.net/hphotos-ak-prn2/p480x480/1379758_10201554663100030_413042368_n.jpg)
Title: Re: speed sensor problem
Post by: vRSAlex on October 12, 2013, 07:35:37 pm
You can see the ring without stripping everything off. You need to look at the rear of the hub. Even the smallest cracks can cause the abs to not read correctly.

Just get an FAG bearing from euros.
Title: Re: speed sensor problem
Post by: bower on October 12, 2013, 09:09:41 pm
Bit late now I've already stripped it lol. All I want to know is where is the ring? Is it the plastic bit?
Title: Re: speed sensor problem
Post by: doylebros on October 12, 2013, 09:30:22 pm
Read here page 4 of 24

http://vwts.ru/suspension/g5/g5_42-05.pdf
Title: Re: speed sensor problem
Post by: bower on October 12, 2013, 09:59:40 pm
Why do I need to read that? Just a yes or no would have been more helpful
Title: Re: speed sensor problem
Post by: doylebros on October 12, 2013, 10:05:36 pm
Not every car is the same - brake set up 1kd or 1kz or 1ky or 1ke 

http://www.ebay.co.uk/itm/GENUINE-VW-VOLKSWAGEN-REAR-WHEEL-BEARING-AND-HUB-8V0598611-/380704023532?hash=item58a3ba63ec

As above - Even the dealer has hassle which bearing is fitted - but I'm sure it will fix it!

Title: Re: speed sensor problem
Post by: bower on October 12, 2013, 11:29:24 pm
Cheers for your help I really do appricate it but what I'm trying to find out is where's the ring at????
Title: Re: speed sensor problem
Post by: doylebros on October 12, 2013, 11:39:09 pm
It says on page 4

Sensor ring for ABS is
installed in wheel hub
look and compare yours
http://www.ebay.co.uk/itm/VW-GOLF-MK5-REAR-WHEEL-BEARING-AND-HUB-2004-2005-2006-2007-2008-2009-2010-/271055931830
Title: Re: speed sensor problem
Post by: vRSAlex on October 13, 2013, 10:40:49 am
Bit late now I've already stripped it lol. All I want to know is where is the ring? Is it the plastic bit?

The speed sensor is pointing at the ring  :happy2:
Title: Re: speed sensor problem
Post by: bower on October 15, 2013, 06:42:03 pm
well after replacing sensor, stripping the hub and cleaning it the lights have returned  :fighting: so just goin to replace wheel bearing and see if that cures it.
mot monday
Title: Re: speed sensor problem
Post by: ChrisGti on December 17, 2013, 05:50:01 pm
Did the new bearing solve the problem? I've exactly the same thing going on currently.

Cheers,
Title: Re: speed sensor problem
Post by: doylebros on December 17, 2013, 05:57:29 pm
Did the new bearing solve the problem? I've exactly the same thing going on currently.

Cheers,

Read what bower wrote here:-

http://www.mk5golfgti.co.uk/forum/index.php/topic,75004.15.html
Title: Re: speed sensor problem
Post by: xjay1337 on December 17, 2013, 06:40:49 pm
Did the new bearing solve the problem? I've exactly the same thing going on currently.

Cheers,

Use Vagcom or similar to actually diagnose the fault.
Check which side is having the problem.
Using the measuring blocks to measure LIVE the speed readings from the wheel.
Verify wiring integrity before replacing the sensor, resistance and voltage
If wiring is correct and sensor has been replaced and still having a problem then you can look at the speed sensor ring.

I had a terrible issue with my TDI which took ages to fix and in the end we were going to replace the ABS unit but the symptoms didn't add up and it turned out the problem was a faulty wire inside the body (all the battery etc needed to come out to rewire it, hitting a pot hole hard caused some damage)