Jaguar XK 2006 Misc. Document Rear Window Regulator Replacement 2 PDF

D. Jensen 1 9/06
© D. Jensen
V. 1.0
The Fine Print: The following is a summary of my experience replacing the rear quarter window
regulator on my California-based ’01 XK8, VIN NA11439, with 54,750 miles. Some of the steps
described may not be applicable to your car due to its year of manufacture or other details. I have
worked on cars for many years so I have a reasonable understanding of their operation and
safety issues that must be addressed. I accept no responsibility or liability for potential
misstatements in this write-up or the manner in which the write-up is used. Please follow all
normal safety precautions when performing this work.
While raising the top on my ’01 XK8 convertible recently, I heard a loud “pop” from the
right-rear seat area and saw that the rear quarter window was no longer operating. I
could hear the drive motor cycle down and stop, and then cycle up and stop as I toggled
the “Roof” switch. I also heard the sound of a cable flopping around.
I reviewed the XK8/XKR Jag-lovers archives, but found no discussion of this type of
repair. I then reviewed the removal procedure described on the Jaguar JTIS CD. Under
“Rear Quarter Window Regulator Motor Vehicles with Convertible Top (86.25.11), the
second step is “Remove convertible top. Refer to 76.86.15.” YIKES! This seemed to
confirm my initial concerns that replacement would be hard, time consuming and
probably expensive. As it turned out, it is not necessary to remove the top, thus saving
many hours of labor. As I went about the replacement, I took photos and made notes, as
presented below, that supplemented the JTIS descriptions. These may be helpful to
anyone who has to perform this repair, or wants to realign their rear quarter windows,
since there are several steps called for in the instructions that are not necessary or are
not fully described. While this is probably not a common failure, the San Diego Jag
dealer had the regulator on the shelf so it must have happened a few times before to
XK8s in the area.
Special Tools
None, as long as you consider star (Torx) bit drivers normal tools. Every tool I needed
was in my DIY tool inventory.
While I probably could have repaired the regulator given enough time and a good
machine shop, I wanted to get the car back on the road as soon as possible. I also didn’t
want to repeat this repair if my fix failed at a later date. Thus I opted to buy the
replacement regulator for $294 (before tax) (see Fig. 1). This unit did not include new
glass or seals, which I didn’t need. Jaguar apparently no longer sells just the regulator
alone so the cost of a replacement unit with glass and seals can be expected to be
significantly more.