ABS sensors for 2003 and up XK8s - Jaguar Forums - Jaguar Enthusiasts Forum


XK8 / XKR ( X100 ) 1996 - 2006

ABS sensors for 2003 and up XK8s

Reply
 
 
 
Thread Tools Search this Thread
  #1  
Old 11-12-2017, 04:39 PM
Member
Thread Starter
 
Join Date: Aug 2015
Location: georgia
Posts: 70
Thanked 1 Time in 1 Post
Default ABS sensors for 2003 and up XK8s

I recently started feeling the ABS system start to activate when slowing down even though I was nowhere near locking up the brakes. Of course the associated lights came on and the code said it came from the right read wheel. I looked at the sensor and also Reverend Sams cleaning procedure. The sensor does not look dirty to me but I cleaned it off anyway. Weather is too nasty to test anything today. I started looking at the sensors to buy a replacement since mine was not dirty. It seems that the sensors for 2003 and newer are 4 times more than 2002 and older. They look almost identical. Am I missing something here? Is there a cheaper place to buy these for under $200 each?
THanks
Reply With Quote
  #2  
Old 11-12-2017, 04:55 PM
fmertz's Avatar
Senior Member
 
Join Date: Nov 2014
Location: Eastern USA
Posts: 930
Thanked 338 Times in 292 Posts
Default

Check the reluctor ring, too. It is the ring with the teeth that the sensor picks up the rotation from. It is known to come loose and give effectively false readings. Gently try and rotate it with a screwdriver. It needs to be solid with the axle. Known to give transmission error codes, too.

More likely, it is the harness to the sensor. The plug/rubber boot to the sensor has been reported as a wear item, too. Can apparently be repaired.

Best of luck, keep us posted.

PS: You can swap sensors side-to-side and see if the error code follows the sensor...

Last edited by fmertz; 11-12-2017 at 04:56 PM. Reason: PS
Reply With Quote
  #3  
Old 11-12-2017, 05:16 PM
Member
Thread Starter
 
Join Date: Aug 2015
Location: georgia
Posts: 70
Thanked 1 Time in 1 Post
Default

Good point on the swap side to side. FYI, I continue to have transmission error codes (5th, 6th gear ratio incorrect) from time to time even though I have done the lifeguard 6 change twice now. Thinking about changing the solenoids in the tranny next. I already checked the reluctor ring and I could not move it but thanks for mentioning it just in case
Reply With Quote
  #4  
Old 11-12-2017, 07:58 PM
fmertz's Avatar
Senior Member
 
Join Date: Nov 2014
Location: Eastern USA
Posts: 930
Thanked 338 Times in 292 Posts
Default

That incorrect ratio more definitely points to the reluctor ring! When the ring is loose, these codes are thrown. You can pull over, shut the engine down, then restart and everything is fine again for a while. That left rear ring is the input for road speed for the transmission logic.

Best of luck, keep us posted.

Last edited by fmertz; 11-13-2017 at 10:11 AM. Reason: Corrected sensor to left rear
Reply With Quote
  #5  
Old 11-12-2017, 09:05 PM
Member
Thread Starter
 
Join Date: Aug 2015
Location: georgia
Posts: 70
Thanked 1 Time in 1 Post
Default

That is interesting. You say it is the right rear? I thought it was on the left (US drivers side rear). That is only one I have checked. If it is the right rear and if it is loose, is there a post on here somewhere as to how to fix it? Thanks
Reply With Quote
  #6  
Old 11-13-2017, 10:17 AM
fmertz's Avatar
Senior Member
 
Join Date: Nov 2014
Location: Eastern USA
Posts: 930
Thanked 338 Times in 292 Posts
Default

You are right, I corrected it to left rear.

Not sure about the fix. I comes up once in a while on this forum, as part of the rear hub overhaul. Probably best to check the parts or workshop manuals. I believe it is a pressed-in type of deal. Besides that, I am sure there are quick fixes you can do until you get around to that bigger repair.
Reply With Quote
  #7  
Old 11-13-2017, 10:46 AM
Member
Thread Starter
 
Join Date: Aug 2015
Location: georgia
Posts: 70
Thanked 1 Time in 1 Post
Default

Thanks. I found a couple of posts that say it is a press on fit but a loose one so maybe press on is not the correct term. It is reportedly held in place by the tightening of the hub nut according to posts I have read.
Reply With Quote
  #8  
Old 11-13-2017, 11:15 AM
Veteran Member
 
Join Date: Apr 2014
Location: New Jersey USA
Posts: 2,480
Thanked 500 Times in 317 Posts
Default

Greg, thats exactly what I found. The ring is pushed on hand tight ( a press gains you nothing here). It's outside contact's the inner bearing on the wheel side. The reluctor ring's inside is pressed up against the UJoint's splined connector on the axle slide.

God help me but I chose to leave the rubber bearing seal off on the driver side because I couldn't get a decent connection to the reluctor ring with it in place (btw there as no seal there when I disassembled it.

Don't forget you can view the reluctor ring turning with ABS sensor out rear jacked on neutral. Though the pressure is so high you may discover nothing without real driving. After typing i feel like its a waste of time. Its not like youll be able to surprise the rings movement with a screwdriver. I'll leave it in as an FYI.

Is your hub bolted on tight to the axle? Mine was loose before the job, which would lead to bad readings.
Reply With Quote
  #9  
Old 11-13-2017, 12:00 PM
Veteran Member
 
Join Date: Jan 2009
Location: Raleigh, NC
Posts: 8,547
Thanked 1,589 Times in 1,241 Posts
Default

I needed a new rear wheel speed sensor on my 2005 S-Type a couple of years ago. SNG Barratt Group was selling aftermarket ones at that time that were about one-fourth the price of the Jaguar ones. I ordered one of the aftermarket ones and it has worked perfectly. I assume they offer a similar deal for the XK8/XKR....

I knew it was indeed a faulty sensor because when I swapped it to the other rear wheel, the OBDII code followed my swap....
Reply With Quote
The Following 2 Users Say Thank You to Jon89 For This Useful Post:
Pantera928 (11-13-2017), SNG Barratt USA (11-13-2017)
  #10  
Old 11-13-2017, 03:01 PM
SNG Barratt USA's Avatar
Premium Sponsor
 
Join Date: Nov 2013
Location: Manchester, New Hampshire
Posts: 1,390
Thanked 444 Times in 247 Posts
Default

Reply With Quote
  #11  
Old 11-13-2017, 04:47 PM
Member
Thread Starter
 
Join Date: Aug 2015
Location: georgia
Posts: 70
Thanked 1 Time in 1 Post
Default

Interesting enough is that on their website, I see no sensor and on the link above, it shows 2 rings with the same part number but one for $88 and another for $280. Confusing to says the least
Reply With Quote
  #12  
Old 11-13-2017, 04:55 PM
SNG Barratt USA's Avatar
Premium Sponsor
 
Join Date: Nov 2013
Location: Manchester, New Hampshire
Posts: 1,390
Thanked 444 Times in 247 Posts
Default

The version with a * after the part number is manufactured by SNG Barratt.
It is of equal quality to the original at a fraction of the cost.

Any questions please let us know!
Regards
SNG

sales.usa@sngbarratt.com
Reply With Quote
  #13  
Old 11-13-2017, 05:38 PM
astromorg's Avatar
Senior Member
 
Join Date: Feb 2012
Location: Portsmouth, England
Posts: 731
Thanked 333 Times in 224 Posts
Default

Quote:
Originally Posted by Pantera928 View Post
..... It seems that the sensors for 2003 and newer are 4 times more than 2002 and older. They look almost identical. Am I missing something here?.....
Prior to MY2003 the wheel sensors were the simple two-wire passive type using a magnet and coil to sense the teeth of the reluctor ring. From 2003 onwards the sensors are still two-wire but are active Hall effect sensors that give a more accurate reading/signal to the ABS/DSC system.

The two types are not interchangeable and yes, there is a price difference!
Reply With Quote
The Following User Says Thank You to astromorg For This Useful Post:
Pantera928 (11-14-2017)
  #14  
Old 11-13-2017, 10:06 PM
03 XKR's Avatar
Senior Member
 
Join Date: Mar 2015
Location: Tri-Cities, (Richland), WA
Posts: 380
Thanked 88 Times in 76 Posts
Default

I have been having the same issue with a front speed sensor kicking everything offline while braking and getting a 'kickback' in the pedal. I figured I needed new brake pads and needed to clean the sensors, again.

However, after taking a closer look, I found the sensor on the left front had it's wiring harness cinched down with a zip tie, looks factory, to the point that the wire had gotten so tight at the wheel that any wheel movement, including up and down while going over a speed bump, would cause everything to go offline as it broke contact momentarily.

This was accompanied by an unwanted activation of the ABS in that wheel, resulting in a kickback of the pedal for a nano second, before the electronics determined the readings did not make sense, and shut everything down.

I loosened the wire harness on the sensor, and have had zero repeats. Although I have really been trying to make it go again by taking really curvy roads around the area that put my wheels near the locks.

I can no longer duplicate the event, so for me, it was just a tight wire harness at the sensor.
Reply With Quote
The Following User Says Thank You to 03 XKR For This Useful Post:
Pantera928 (11-14-2017)
 
 
Reply



Currently Active Users Viewing This Thread: 1 (0 members and 1 guests)
 
Thread Tools Search this Thread
Search this Thread:

Advanced Search

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are Off
Pingbacks are Off
Refbacks are Off


Advertising
Featured Sponsors
Vendor Directory

All times are GMT -5. The time now is 02:39 PM.


JAGUAR and its logo are the registered trademarks of Jaguar Cars Limited. Jaguar Cars Limited is not affiliated with JaguarForums.com. We are a participant in the Amazon Services LLC Associates Program, an affiliate advertising program designed to provide a means for us to earn fees by linking to Amazon.com and affiliated sites.
 
  • Ask a Question
    Get answers from community experts
Question Title:
Description:
Your question will be posted in: