ABS Conundrum

[Force4145]

I've just had the front discs and pads replaced on my 2004 3ltr Sport. Just prior to that, the ABS warning lights started coming up permanently, along with the engine icon.

 

The mechanics who replaced the discs and pads had a look at the wheel sensor to try and cure the warning lights but something strange happened. They would clear the warning on the front left wheel, then the warning on the right rear would come on. As soon as that one was cleared, the front warning would flash back
up...and so on.

They tested the sensors as best they could and found no fault.

However, over the last few years, I have had the ABS warning come on from time to time. To clear it, all I had to do was put the front wheels on full right lock and when straightened, the warnings would all disappear.

Could it be that the front ABS Speed Sensor (which is embedded in the wheel bearing hub) could be shorting out, thus making the whole ABS system unreliable? Or could their be other causes...

Thanks for any help.

[Force4145]

Any thoughts? Anyone... :)

[O.T.H]

Hi Nick

I had a very simular fault and changed sensors and a wheel bearing and I still had the fault on and off.??

 

In the end it was found to be the short set of wires under the o/s wing  that goes from the sensor to

a joiner through the inner wing  £4 something on eBay so if I was you I would change both fronts and see.????

 

Frank

[Force4145]

Hi Frank,

 

Do you happen to know what part you ordered from eBay?

 

Thanks,

 

Nick

[O.T.H]

Hi Nick

 

The part that was faulty on my car was --

 

http://www.ebay.co.uk/itm/FRONT-ABS-HARNESS-LEAD-FOR-ABS-SENSOR-Jaguar-X-Type-2002-2010/271983352136?_trksid=p2047675.c100005.m1851&_trkparms=aid%3D222007%26algo%3DSIC.MBE%26ao%3D1%26asc%3D33959%26meid%3Dae4e2ce694534fad8d0b592bba784087%26pid%3D100005%26rk%3D1%26rkt%3D6%26sd%3D191720364554

 

By the sound of it yours could be any of the wires and this fits N/S or O/S .???

 

I know yours is a S Type but i should think its simular.???

 

Frank

[Force4145]

Hi Frank,

 

Thanks, but I think the S-Type front harness is different.

 

All the best,

 

Nick

[O.T.H]

Yes but I think you still have a broken wire in one of harness's from the sensors.???

 

Frank

[Force4145]

Hi Frank,

 

Yes, I'm sure you're right. I've ordered a front wheel bearing which includes the ABS sensor and a fair length of signal wire. Once fitted, if that doesn't do the job, I'll ask the engineers to test the rest of the wiring loom for connectivity. Fingers crossed :)

 

Cheers,

 

Nick

[Force4145]

<SOLVED>

 

Just thought I'd let anyone interested that the problem is now solved. It was the ABS sensor in the front left wheel bearing.

 

Luckily I managed to locate a brand new part on eBay for £59.00, which was a much better deal than the £400.00 Jaguar wanted.

 

 

 

If you are looking for the same part, drop me an email and I'll try and help.