Data point. 2014 v8 RWD. Diff cooked at 30k. Replaced with used diff and still kicking. I change the fluid every 20k and no problems.

 

2016 F-type S AWD 380 Convertible
47,000kms
Stratus Grey exterior
Brogue interior

Purchased vehicle (used) from dealership on Nov 19, 2021.

3 weeks later, noticed leak on garage floor.

Note from dealership when I took it in for repairs on Dec 11:

The leak is coming from the rear differential - rear pinion shaft. The rear pinion seal was replaced at no charge to me.

One week after pinion seal replacement noticed leak is still present - coming from pinion seal again!

Note from dealership on Dec 29: Differential will need to be replaced as no parts other than the seal are serviceable. Cost of $5k to be shared equally between dealer and myself.

Does this seems right? Any suggestions or recommendations would be greatly appreciated!

 

That the diff needs to be replaced at that mileage is nothing uncommon but why are you expected to contribute to the repair costs, especially this soon after the purchase? Didn't the car come with any kind of warranty? I guess this is in the US and don't know the consumer rights there but in my part of the world every used car sold by a dealer comes with at least 6 months of warranty.

 

I haven't reviewed this entire Topic,

But was the differential vent cleaned? A buildup of pressure from a clogged vent can cause a leak.

I made sure to clean ours when I replaced the diff fluid recently.

 

I think there have been reports of inexpertly repaired leaky seals that resulted in a new diff being necessary - I'd blame the repairer,

 

The dealer (non-Jag dealer) did not offer an extended warranty … ironically, I took it to a Jag dealership to purchase an extended warranty and during the mandatory pre warranty inspection they identified the leak as being a rear pinion leak. I then brought it back to the non-Jag dealer to repair it at no charge. The Jaguar dealer was going to charge me $1100 Canadian. And yes, this is a Canadian purchase. Not sure about used car consumer rights here in Ontario, Canada? Anyone know? Should the diff replacement be covered by the non-Jag dealership? The issue was identified within 30 days of purchase and after a full “government mandated safety certification”.

 

For instance in Germany the consumer protection law essentially says that anything that brakes down on a used car within a year after the purchase (used to be 6 months, but is a year as of 2022) is on the selling dealer, regardless of if you also have an additional warranty. I hope you have something similar in Canada.

 

I have a 2019 F Type P380 Coupe, meticulously maintained, never redlined, paved roads only.
At 77,000 km visual inspection - no leaks; at 80,914 again no leaks upon visual inspection - both inspections
at Jag dealer during unrelated service work.

At 86,900 km my local mechanic noticed a pinion seal leak during an oil change. I brought it to the Jag dealer
one week later (soonest possible) - noise free, and operating as usual to my experience.
Once the pinion seal was repaired they report a "noise" from the differential - it needs to be replaced.
Low fluid level and dirty fluid was all they could tell me. No warranty coverage.

This to me seems to be defective engineering or improper seal replacement. Similar problems abound with Jag models.
Will contact Jaguar Canada to "enquire" as a first step, what my options may be to recover repair costs.

 

Isn’t your car covered under the 5 year bumper to bumper warranty?

 

Well, dirty fluid is not Jaguar’s fault - that strictly falls on the owner. All fluids need to be changed at some point and the timing varies with the type of use. The F-Type, it might be argued, invites a type of driving that is more demanding, and which therefore might require a fluid change (87,000 kms?) while a sedan with the same kms might not.

 

Rear diff fluid should be changed every 4th service (for my MY18, anyway).

 

Yes... and no. If Jaguar tells owners that the diff never needs servicing, how would owners ever know that the fluid is dirty and needs changing? Also, the design of the assembly itself certainly contributes to the rate at which the fluid gets dirty, so in both cases, Jaguar is certainly a contributor.

 

Not in Canada.

 

Canada has 80,000 Km 4 year warranty.
My 4 years were up June 13, 2022.

All fluids were changed in April 2021 at the dealer. This was the 36 month servicing.

The car is not winter driven, no dirt roads, no gravel roads. Estimated 85% clean dry highway driving. I pressure wash the underside of this car.
(Hand wash everywhere else).

Two visuals since then. The last one was June 10, 2022. No issues reported. Three days prior to warranty expiry date shown on the invoice.

Am I to accept that in one month my pinion seal and differential malfunctions? I saw no leaks on my floor. Ever.

I suggest this is a poorly engineered part perhaps deserving of a proper fix and a recall.

 

I would state my case to the dealer and if not satisfied with a warranty claim go to corporate. This issue surfaced a very short time after your warranty expiration and should be accepted. This is a known issue for years, a pinion seal leak and differential whine. I had both first a pinion seal leak (under warranty) and then a differential whine. I took my jag to Paramus Jaguar numerous times to diagnose the rear differential whine, they said front tire nois,BS, they could hear it like I did. The whine increased to the level that I recorded it on my phone and when the technician heard it there was no doubt I needed a new differential, under warranty. Even though I could hear a whine they “couldn’t “ until it was extremely loud. Good luck with your warranty claim, document your service history and be firm with your conviction that this is a known issue.
cheers
Frank

 

I did contact Jaguar Canada stating my case.

They didn’t give me warranty treatment since the warranty was over, however they did send me $1,000 in vouchers.
The dealership also managed to find some $1,000 in discounts and did not charge for the pinion seal nor the diagnostic.

So worth the effort in the end.

I am advised to avoid paddle shifting….

Cheers

 

Oh now that is odd. The differential doesn't know the difference between the transmission and you deciding when to shift. All the differential knows is that there's a spinning driveshaft feeding it. I'd call BS on their statement unless they can provide background to explain it.

I "suppose" that when paddle shifting, maybe the ECU tells the differential to act different, but that's a stretch. I "suppose" that manual shifting "may" be quicker, but seriously doubt that it's even possible. I think they're just deflecting, trying to shift blame from the design, to you, for using it "wrong." Nice try though.

 

The OP has a 2019 P380 so the V6 not the V8, which means he has the mechanical LSD not the E-diff. So no electronic control of the diff and even more reason to suspect the advice given.

 

Totally agree given that it's the mechanical LSD.

 

For the purpose of statistics:

2016 F-Type S AWD Coupe
Bought from dealer in March 2022
~45000km

Workshop just called and said the rear differential needs replacing. Had the car in for troubleshooting a squeaking noise I thought was a rear balljoint. Boy was I wrong...