About a year ago, the ABS and TRAC error messages started to
appear intermittently in the speedometer message area of my
�01 XK8 along with the simultaneous illumination of the ABS
warning light. As is often the course for this problem, the
messages and light eventually stayed on continuously when
the car was being driven. A review of the archives confirmed
that this is a common problem, with a number of posters
providing useful insight. y2Kxk8 recently noted (based on an
earlier post from another Jag-lover) that the simultaneous
appearance of the messages and ABS light did not indicate a
bad wheel sensor, etc., but instead failure of the solder
joints on the circuit board that provide power the ABS
motor. He described a simple fix of opening the module and
re-soldering the failed joints. Motorman also had a number
of useful posts on this topic and indicated that the repair
is straight forward. Other posters also provided added
insight. However, I couldn�t find photos showing how the
module was removed, opened and repaired.
I recently completed the successful repair of my module.
Excluding the time spent taking photos, waiting for the RTV
on the module cover to cure (24 hr), and subsequently
bleeding the brakes, I completed the job in a couple of
hours. As others have noted, it is a simple repair that can
easily be completed by the normal DIY mechanic.
Initially I attempted to use a method recommended by Jeff
Kline for removing the module from the car, i.e., remove the
four module-support-to-frame bolts and then push the lower
portion of the ABS assembly toward the engine to provide
clearance for removal of the module. This method avoids
removing the hydraulic hoses and the need to later bleed the
brakes. However, despite some bending of the hydraulic lines
and lots of pushing, I could not pull the module free. I
chose to replace the module-frame bolts, remove the four
hydraulic lines (the normally recommended means of access to
the module), and slide the module forward.
Dan–
Dan Jensen 84 XJS 95 XJ6 01 XK8
La Jolla, California, United States
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In reply to a message from Dan Jensen sent Thu 1 Jan 2009:
Dan,
Thank you for the informative post and pictures. I have had these
indications appear twice in the past year and then vanish just as
suddenly on the next start up. Now I know what to chase!
Thank you!–
Bob Loftus
Gilbert/AZ, United States
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In reply to a message from Dan Jensen sent Thu 1 Jan 2009:
Very cool post Dan! Thanks for the info and the work. Having
created a repair blog for the X-Type and maintaining it for two
years, I am well aware of the work involved photographing
everything and documenting the repair procedure. Well appreciated.
Very good company you mentioned in your post too. These are top
drawer guys who know what they’re doing.
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In reply to a message from Dan Jensen sent Thu 1 Jan 2009:
Dan,
Great job with your detailed info and photos on the ABS module. I
only wish this information was available prior to my replacing both
xj6 & xk8 modules. You should feel good for thinking outside the
box.–
GusG
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In reply to a message from Dan Jensen sent Thu 1 Jan 2009:
I did the repair yesterday on the wifes xk8. The circut board had a
layer of goo ‘‘sealant’’ that was easily removed with a razorblade at
the repair area. The joints are tiny and not easy to see my eyes. I
resoldered the pins and inspected sealed and reinstalled. The car
is FIXED and I thank you for the guide to do the repair many thanks.
If I could only get the radio to turn off without pulling the fuse
everything would work.
thanks again
Mal–
malcolmx
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In reply to a message from Dan Jensen sent Thu 1 Jan 2009:
Thank you so much for taking the time to post this detailed
removal/repair.
I don’t do tools and under the hood things but when the dealer
quoted me $1800 to replace the ABS Module in my 1999 XK8 I decided
to do some online research and found your EXCELLENT post. Your
instructions/pictures were right on and I was able to remove the
module in about 2 hours, an hour of which was going to buy the E5
star socket at Harbor Freight–you even gave the part number, how
COMPLETE can a description be? That part number was discontinued
and was replaced with part 68017, about the same price. I didn�t
want to do the soldering so I went on EBay and I�m able to get it
rebuild for $45.00 plus tax. SO $1800 vs. $8.00 for the socket,
$20 to ship the module and $50 for the rebuild plus 2 hours of my
time. Let�s see, $1800 to Jaguar or $78? Unbelievable!!–
kcoaster
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I apologize for the long delay in responding. Your e-mail went into Junk and I didn’t notice it until today. You have probably long since completed this job. I didn’t drain the lines, but I did bleed the brakes after buttoning things up.
BTW, the fix lasted 2 years before the ABS/TRAC light came on again. I pulled the codes again and got "DTC C1137 is logged and the ABS is disabled.” Possible causes were listed as “Defective control module, major internal fault”. I sent the module to ModuleMaster for repair ($120), but this was not successful. I ended up replacing it with a rebuilt one from BBA Remanufacturing in 2011 for $462. This unit was working 8 years and 10K miles later when I sold the car in 2018.