2009 XF Differential
 

hello everyone,
I bought a used 2009 Jaguar XF few months back and now its differential has gone. I saw a thread where it was said that 2009 jaguar xf were recalled for change of the differentials but in my car history it does not show that it has been removed . So i just want to know that is there any option me for get it done under warranty or anything like that.
Thanks

No options exist that I'm aware of. It wasn't a recall. They had a design change due to issues with leaks at the axle seals and contamination in the fluid. The new design is expensive to swap in (~$10k according to Jaguar). I'd look for a way to fix the diff or find used parts to swap in.

2009 XF Differential
 

Wife has a 09 XF, purchased new, We have had two (2) different differentials replaced in that car. Yes it is a different design, heaver duty. They were replaced due to manufacturing problems, the builder did not properly clean the housing after machining, assembeled them with cleaning fluid in them, which broke down the gear lube and bearings. Some would leak as a result of this, ours, both of them, started to whine and clunk, due to bearings breaking down. The Jag TSB numbers are TB-K-035, JTB-00175, TSB-K035, TB-UPS-2608-2B. These all relate to the differential leaking, making noise. I don't know if the build date of the car has any thing to do with the fix. I would ask the dealer, or Jag if your car is covered, good luck

FYI I saw this on the XJ forum. A quaife diff might be an option:

https://www.jaguarforums.com/forum/x...ge-how-121268/

After seeing all these 09 differential issues I swapped out my differential fluid last night. Changing the fluid on the XF differential is very easy. I found a how-to on the XK forum which as a bit scary but as it turns out the XF fill plug is MUCH easier to access than the XK. The plug is magnetic to help pull particles out of the fluid. The magnet had a decent glob stuck to it (~marble size) so I'm glad I cleaned it and changed the fluid out. The glob on the magnet was very fine without any chunks which I think is good. I had to siphon the old fluid out and pump the new stuff in. I used 1.5 qts of gear oil.

If anything I'd recommend people remove the diff fill plug and clean off the material stuck to the magnet. Should be a 10 min job. All you'll need is a 3/8" ratchet. The plug takes a 3/8" square head.

I have debated having my mechanic swap out my diff fluid for an AMSOIL or Redline equivalent. I notice that it is a little clunky when it is getting warmed up (even after a full diff replacement under warranty and software update) and I have a feeling that very average OEM fluid is the culprit.

Curious to hear your thoughts after you have had the chance to drive around a bit with that fluid. I know Jag is very weird about the use of certain weights / brands of fluids & oils in these cars so hopefully you don't run into any issues!

I searched though the Jag forums and found quite a few XK and XJ owners using the same fluid I listed above. I never had any noises of any kind or leaks coming from it. So far after about 10 miles I haven't noticed any change which is good. I know the XFR uses the electronic diff so fluid selection might be different.

Everyone likes pictures so here is a quick shot of the rear diff fill plug:

I'm thinking I should swap my diff fluid as well. I'm assuming that my naturally aspirated 4.2L xf will require the same 1.5 quarts of gear oil.

I've done a search but can't find a definitive answer. Any thoughts? Thanks

Edit - nevermind. I see it's 1.38qts that are required.

Yup, it will be the same for the NA 4.2L. 1.38L is probably correct. I was estimating at 1.5L.

I had mine swapped at the dealer. Thank God for an aftermarket warranty. The diff alone was nearly $8K.

If anyone ends up having the diff issue out of warranty make sure you look into a Quaife differential Part number: QDF3W. It would be a MUCH better/cheaper ($1,400 vs $8,000) option than the old bad diff or even the new updated diff. The huge benefit would be lifetime warranty and power going to both rear wheels vs. one. Labor for install should be relatively cheap if you can't do it on your own.

Here is a very good install procedure with pictures: Jaguar Quaife Differential Install ? Jacks Transmissions

Here is a spec sheet I found on the particular Jag Quaife diff: http://shop.quaife.co.uk/media/blfa_files/QDF3W.PDF

Here is the feedback from someone who installed one into their Jag: Jaguar X350 XJR - Page 2

Here is a Jaguar shop stating that this fits all XJ models except for those that come with the E-diff: Racing Green Jaguar. - XJ V8 2003 onwards, Differential, Limited Slip

I'll have to look up the TSB's to see if my car falls under those with this issue. So far, we haven't had any issues, but the car has only 21,000 miles on it. However, FWIW, I glanced at this discussion a few weeks ago, and seeing what had been said, I decided that I should at minimum, change the gear oil in our '09 XF.


I will say this, however....I went to the Red Line Oil website, and their product recommendation page said to use the 75W-90 gear oil. Consequently, that's what I purchased.


Draining/refilling the diff isn't all that hard, but getting the car to a reasonable working height is far more of a job. I've had a number of GM cars in the past, and I believe that GM uses some sort of moly based lube in the initial assembly of their diffs, as whenever I've changed the oil in them, it always comes out a grimy grey, at least for the first couple of changes.


The oil in my XF also drained out a dark grey in color, and the magnet on the drain plug was covered in crud. Hopefully, changing this oil pays off in longevity. (if it wasn't such a PITA to get the car up to working height, I would have driven around for 10-15 minutes after changing the oil, and drained/re-filled it again, to get a good flush out.)

It appears that this discussion kind of died off, however, I check in with this....I drove the car for about 200 miles, and got it back up on the ramps, and drained/re-filled the differential again, just to make sure there's clean oil in there.


The Red Line oil that I put in came out a little dirty, but that was expected, as it was actually circulating around and mixing with the left over residue of the factory fill of oil. I pumped in another quart and a half of Red Line, and so far, after another few hundred miles of driving, all is well.




I also happened to be near my Jag dealer recently, and stopped in to talk with one of the techs. For what it's worth, he thought that the Red Line oil was a good choice.

This problem just surfaced on my car and the dealer is denying it even exists! They changed one of the seals to the tune of $840+ and the damn thing is still leaking. They claim it is not. Round three begins tomorrow morning. Wish me luck.

Blackcoog good info!

I went to Quaife website and pulled up QDF3W, and it says it works for XK/XJ, does that mean for the earlier years of these models, they also use the same differentials up to 09 XF?

I tried to pull up related information about a diff swap and all points to XJ's and XK's, this method that you referenced, is that 100% compatible with an XF?

2009 XF Differential
 

If you check the Engine/Transmission section here on the forum there is a post which gives an overview of the diffs used in late model Jags.

The early XF used the same diff as the XJ, XK and S-Type, just check that yours is in the right VIN range.

EDIT

Here https://www.jaguarforums.com/forum/j...ntials-134733/

Great overview. Who knew the F Type S simply fitted a Torsen? It uses a lower final drive gearset as well (which accounts for the surprising acceleration difference given the S engine delivers marginally more torque in a slightly heavier chassis).

It looks promising for anyone with an early build XF to find a replacement diff in North America.

Do you guys always siphon out or do any of you drop the pan?

I haven't looked to see how hard it is yet but typically dropping the pan is the best way to get all of the fluid out and it gives you an opportunity to check the internals.

If you mean removing the rear cover from the diff that can't be done without removing the diff from the car, in which case you don't need a drain plug of course.

On some cars you can take the cover off without removing the diff I just did it on our edge.

So i guess drain plug and siphon it is