Yup, that is what I was told..

 

Had my 2010 XF SC in the dealer today to have snow tires fitted. I asked them about replacing the TPMS and they said they only do this if there is a problem (and mine hadn't kicked out any error codes etc). However - while fitting the snow tires onto the wheels, one of the TPMS sensors was stuck and it broke off from metal fatigue. So they did decide to replace all 4 TPMS sensors (on warranty of course).

 

The caps that came on my 2012 XF sure seem like metal to me. Could they be plastic?

 

no, it was struck by the tire machine dismounting the tire and broken. But jaguar doesnt warranty that so "metal fatigue" is the correct wording

 

doesn meen that a "unknowing" salesperson didnt do it, OR, that theyre the ones with a metal cap but a plastic insert in the cap

 

You can use plastic or Aluminum with no problems.
I bet the first owner had somemetal or chrome caps on before I bought the car to fatigue it.

Now I am using the R Aluminum caps from Mina Gallery with no issues. I added a touch of never seize to the threads just incase which is over kill but I am super careful now.

I must say when this accident originally happened I was very scared and could have been really hurt or killed. And for me to say that goes a long way as I have done many stupid high speeds, corning, burnouts and other dumb things over the years.
So this high speed blowout on a bended highway was enough for me to soil my shorts.
I now always have this reminder in my head no matter what I drive now.
I am very happy how Jaguar handled this in the end and it made me buy another Jaguar shortly after due o the support they gave me to resolve this issue.
Initally the dealer and the customer support people were rude and not helpful. But being I analyzed what caused this and was able to explain it they then took proper action.

 

It's not metal fatigue but electrolytic corrosion caused by the dissimilar metals. The valve stems are also anodized to reduce the risk of corrosion. Metal caps could nick the anodizing which would not be good. However, aluminum caps could be ok, esecually if made of anodized aluminum. However, aluminum has a tendency, like stainless steel, to seize to itself. There's a technical term, I think it is called "galling". Also, pure aluminum is relatively rare so unless you know the aluminum caps are exactly the same alloy as the stems they could still corrode each other. Use of never seize is a good idea if you wish to separate aluminum threaded fittings in the distant future. I'd still go with plastic myself.

 

The original post on this thread is still BS. TPMS stems will not cause the shreading of your tires. Driving on flat tires until they are destroyed will cause them to seperate from the wheels . Driving on tires that are worn down to the steel cords, under inflated, dry rotted, punctured,etc... could cause them to delaminate and separate from the wheel but then all of these conditons can be averted through proper tire maintance and replacement.

 

You do not know what you are talking about and so should stop misleading people.

At 75 mph a blowout can destroy a new tire in seconds, well before you can stop. This is one reason among many why blowouts are so dangerous. A failed valve stem is so dangerous these TPMS systems ought to be withdrawn from the market until they can be guaranteed 100% not to fail.

High performance European cars have valve stems secured by a nut, as do most TPMS. Some cars have tires mechanically secured to the rims, for example Nissan glues the beads on their GTR because the torque is so enormous the wheel can rip itself right out from under the beads, especially when cornering under high acceleration. In older times with tube tires it was considered safer to physically screw the tire bead to the rim on very powerful cars.

You should refrain from opining from ignorance.

 

I should also add, when the stem had failed so did the warning system in not showing me on the dash display and thus never knew the tire almost instantly deflated. And at that speed on a bend I can see how the tire shredded off.
One must know the scenario before judging, and if it were not true or could have been true Jaguar USA would not have taken care of the bill after they inspected the car.

 

Initially posted this in my XKR forum but no response as yet, this looks like a good thread.
So when my tire burst due to hitting a pothole I was able to nurse it to the hard shoulder. Tire was flat and split wide open but at least it didn’t shred off the rim. Shouldn’t I have got a TPM warning? Also when all 4 tires were replaced the shop said if I got TPM warnings to drive at 60kph and they would reset but I never got any warnings.

M y question is could a po have disabled TPM somehow? Should I look for a missing fuse?
Will TPM also warn over-inflation or only under inflation?

 

my thought was the Bluetooth or whatever the 315Mhz unit was failed to connect on that particular drive or was having interference not to report back.

come to find out for my issue was that tire at some point was driven on while it was low at some point and then aired back up. Damage to tire was already done so it was a matter of time.

and for the TPMs not to report I think due to my speed etc the sensor broke when the tire shredded off.

 

TPMS have a non-replaceable battery that usually lasts somewhere around 7 years or so. You have a 2013 car. Have the TPMS been replaced?
No it's a poor system. You can't even see what the tire pressure is! At least on my 2014 XJ. All I ever get is a low tire warning and at least it does indicate which tire is low BUT no numbers. So is it 5 psi low or 25 psi low?

Jaguar should have a separate screen with all 4 tires shown and their current inflation values. Just common sense.
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interesting about the battery life. If that fails on a TPM would it throw up a warning?

 

It should but the batteries slowly die so it depends. After I found out the batteries can't be replaced and what the expected lifespan was I replace all 4 if it's 7 or more years. I have a 2014 XJR that I got in 2017 so I know the TPMS are OEM. Got an error in 2023 and the suggestion was to just replace all 4 because of the age of the sensors. Which turned out to be cheap as I got 4 on EBay for around $40.

Others have had many problems getting the right sensor too. So there is that complication. Different frequencies were used depending on where the car was sold. I also use Discount Tire and my store can check the new TPMS BEFORE installation as you do get a bad one now and again. Surprisingly when I found the bad one the vendor on EBay raised no questions and sent me another one free of charge!

Yes they are all Chinese made.
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This is one item I would advise to buy a good quality or OEM unit. You don’t want a dead out the box or a defect one shortly after installing it as the cost for labor isn’t worth the penny’s savings on a cheap unit.