I have an XKR with making the "whoop" sound occasionally. I've read about this on the forums and apparently it's the transmission and the fluid additive is the fix. Other Jags had this issue and Technical Bulletin S307-15v2 for S-Type mentions how to fix it.

Question is are TSB's performed for free on a 2005 car that is out of warranty, I'm not sure if TSB work like recalls in the fact they are performed for free? Is there a similar TSB for the XKR dealing with the transmission like the TSB for the S-Type I mentioned?

Seems like many of you have paid for this service, etc. Was hoping a dealer would fix this known problem for free since it is a known issue

I'm in the Atlanta area...any local dealers on here or Jag shops that know how to perform this service properly?

 

No, TSBs don't work like recalls. They're just a repair advisory.

Cheers
DD

 

I just posted my experience with a tranny oil change that eliminated the whoop. If you do this, be sure to use the ZF Lifeguard 6 fluid if you hope to repeat my results.

 

Jaguar issued TSB for XK as well as other Model Ranges that use the 6HP26

bob gauff

 

The Lifeguard fluid is not necessary to eliminate the whoop. Last year I just drained a liter of fluid and added the additive. It eliminated the whoop, but it took a few days to take effect. A few months ago I changed the fluid and used the Ford Mercon SP fluid, which is what for specs for their vehicles that use the ZF 6hp26 transmission (it's only $6 per quart). That fluid change was probably about 10,000 miles ago, and there's still no sign of the whoop. So either the Ford fluid has the additive already mixed in, or the liter of additive that I added last year coated something and eliminated the sound, even after I drained it and added new fluid.

Sorry for the long response. My point is just that you don't have to spend $200-$500 on fluid to eliminate the whoop.

 

Just for clarification, the ZF fluid for the 6HP26 is $17 per quart or about $100 for a fill. I respect the desire to find alternative products to save money but my experience tells me that using the ZF fluid is a safer bet than exploring alternates that are not recommended by the manufacturer on such an expensive mechanism. For anyone that cannot afford the extra $70 for the recommended fluid, I would understand.

 

I read through the procedure and saw an interesting thing....the materials list shows 6 liters of fluid but the procedure calls for two drains and refills of the tranny....this means 12 liters not 6. Be careful not buying enough fluid to do it.

 

You wont get that much out unless you let it sit draining for overnight or a day. A drop and fill is about 4-5

 

Actually that silly bulletin and procedure has gone through several iterations. From 307-19 it went to JTB00030 > JTB00040 then finally JTB00070. All the later ones were for the one liter drain and add additive. The additive works, and works well. I always drain a little more than the liter, put the additive in and then finish the top up with some of the removed fluid. No more noise.

Cheers,

 

Just curious, how does one drain one liter of fluid out of the tranny neatly? Anytime I have opened one of these things up, the fluid gets moving pretty good and makes a big mess when you ram the plug back in there. Keeping the drain to a measured amount seems like a cruel joke to me.

 

I use an empty 5L Mobil1 oil jug. It has a window on the edge and a Qt/Liter scale to watch. Stick an 8" funnel in it and remove the plug, I allow 1 liter and a half to drain into the jug and quickly reinstall the plug. Then I can add the one liter additive and finish the top up with the drained fluid. It's a little messy, but not too bad.

Cheers,

 

The last ATF change done by prior owner was with Dexron. I have the "whoop" every now and then. Where do you get the additive? My local Jag dealer says he doesn't have/can't get it. Since that is the case, would you recommend a complete refill with ZF Lifeguard6? Or is there another source for the additive? AND would the additive even help if it is Dexron in there now?

 

Well, I learned something today......the additive is in fact no longer available through Jaguar. We have one liter of the stuff left, but won't be getting any more.
On top of that, it was ONLY for the VIN ranges listed in the bulletins, and never specified for 2006 models or later. Out of the VIN range, it would probably be best to flush and change the fluid and clear the TCM adaptions. I personally have not used the Lifeguard fluid yet, so I can't vouch for it. Heard quite a bit about it though.
On the Dexron thing.......the only three times I have EVER run into Dexron in ZF's, one 5HP24 and two 6HP26 units, all were trashed. Upon conversation with ZF technical people, they confirmed the only course of action was exchange or strip and rebuild with new friction parts. So I don't know just what to think about the idea yours may have Dexron in it.

Hope that helps!

 

I talked to Hennessey Jaguar in Atlanta. I mentioned what we are talking about here and he said they would add the additive (drain out a quart and add the quart of additive) and it would cost $286.

Does it only need one quart? and is adding it sufficient or is it better to drain and refill the whole system (22k miles on car but 7 years old).

It seems easy enough to do but without a lift I think it would be hard to do properly.

 

Yes, one liter is all it takes, in fact, that is the maximum amount that should ever be used. Read the bulletin carefully.

I'm with you on doing it without a lift. I wouldn't do that on my own car without one; pay 'em the $286.

Cheers,

 

Thanks everyone,
Well, since I can not get the additive here right now and since I would not add that to Dexron (which it sounds needs to come out anyway) in the first place, and since ZF says ZF LifeguardFluid6 is their specified ATF for the 6hp26 transmission and that transmission seems to be what's in the 2006 XKR...my ZF transmission gets ZF fluid, and the shop has a flushing machine so that's the way I'm gonna go on Tuesday.