And they always will.
Since I hate to repeat my posts I just copied part of my earlier post...
"After that I've had the sensors scanned when new tires were installed but they always said the sensors were fine.
A few years later we had the dealership spend an hour of time analyzing the problem, and they found no reason. They said the next step would be to spend a few more hours (and a few hundred mor... "

I don't know how to clarify, but just because a mechanic can scan the installed sensors with a universal TPMS scanner & the sensors are working doesn't mean that they're the right sensors for the X351 TPMS system.

And no random shop will be able to "log into" the X351 TPMS module unless they have (one of only a few) OBD interface with specific capabilities such as the JLR SDD - and unless it's a Jaguar dealership, they do not.

 

Thanks a bunch for that reply; that makes sense. At this point, I'll be looking into replacing the TPS sensors in the wheels. I hope I can find some after market ones and not have to spend the cost of Jaguar sensors for all four wheels.

 

I'm going to have the TPS sensors / transmitters replaced since I have this TPS Failure Message in my car. I can find Jaguar version of these on line but there are some listed as 315Mhz and 443Mhz. Which are correct for my car? Was there a change from 315Mhz to 433Mhz at some point in the 2015 XJL cars? I have found transmitter on 315 and 433 transmitters and some that even claim that they work for either system. I am unsure of using these and would like to identify and replace the transmitters with the exact correct frequency; preferably a Jaguar /Land Rover product as well.

I've attached a photo of the message. The manual shows how to check the various pressures of the tires but I don't seem to have any of those features available through the dash service menus. I do not know if it is because the system is in a failure mode or if that option is not available on this model/ year of XJ. Whatever the issue, I do want to get this resolved and will move forward once I've identified which are the correct sensors for this car. The car was manufactured 04/15 and the number is F8V88034.
If anyone can forward that information I would be sincerely grateful!


This is the fault on the car. If I press the OK button, the message goes away but the triangle warning in the lower right remains.

 

The most accurate & reliable source for you to ask that & get the correct answer is to call a dealership parts counter and ask them which would fit your VIN number.

 

You are so smart! I will! Thanks a bunch!

 

I called the local dealer and he said that I would need to have a shop open up the tire and check to see what is installed to determine if it's a 315 or 433Mhz system. I guess I'll do that next week sometime.

 

I suppose some workers at some dealerships aren't as helpful as others.
They should be able to tell by your VIN.

 

If you're going that route, go to an actual tire shop that can use a TPMS scan tool to pick up the frequency remotely. There is zero reason to pull the tire.
2015 would be 433Mhz.

 

Yes I would have thought so myself. The man I spoke to was very polite and did spend some time trying to determine what it could be. I think I'll get my pal's TPS checker and see if that would report the frequency as recommended by JoshMcMadMac. Thanks for that advice Josh!

 

That may be helpful, but if the reader could tell you which frequency the TPMS sensors in the wheel are, it doesn't mean they're the right ones for your car - if the system never worked since you bought it, it could be that the sensors were replaced before with the wrong frequency.
You'd have to know what the transceiver in the car is, not necessarily what sensors are currently in the wheels.
In our case, the sensors looked fine to the various techs with their TPMS scanner because the sensors were fine.
They just weren't the right sensors for our car.

 

Yeah, I'm a bit concerned about that as well though I'm not exactly sure how to determine which system I have. At this point I'm inclined to think it's 433Mhz but that is only a guess. Whatever the frequency, I'm going to get Jaguar TPS sensors as I expect these to work with the systems in the car. Thanks for your thoughts on this matter Mark. I just want the problem to get fixed.

Also, if the TPS system is working, is it possible to read/ see the tire pressure though the instrument cluster? In the online manual i have, it seems there is a way to address the TPS system but I cannot see any menu choice that would show that either active or greyed out. (Unavailable)

 

Yeah, I did too although I waited nearly 10 years to finally bite the bullet & replace them all.
The difference is that I was able to do a little research & identify the frequency of my (2012) system.
I know for your year it's closer to a "hinge point" when they may have changed from the 315Mhz to the 433 Mhz, but I still can't believe it was just random. There has to be a VIN range where the change occurred.
No - it'll just tell you which corner to check.

 

Yea I was very disappointed in Jaguars TPMS system. Many other cars/trucks allow you to view all 4 tires with the individual air pressures. Also as posted above the warning is useless as all it says is low tire pressure! What about the pressure? No way to see it.
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Club,

The TPMS display was updated around 2016. My 2012 XJ will only tell me which corner is low. The '17 F-Pace and '18 575 will give a warning, and an actual pressure for all 4 corners.

wombat

 

Now that would be a valuable upgrade if anyone can figure it out!
It's a shame no one has worked on this and maybe it's impossible to do?
Is there a screen that shows the current air pressure or does the system need to throw a fault before the display comes up like in my 2014?
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Yes, the facelift instrument cluster shows tire pressure:

 

Hello,

I had then checked and it seems the ones in the car are 315Mhz units. I'll look for some jaguar brand transmitters and see if that fixes the issue. Thanks much everyone for all the comments / advice. As a guy who has always repaired his cars, I couldn't afford to own Jaguars without all the help I've gotten from this forum. Best, Dave

 

Nice work, that's your problem. You need 433Mhz sensors. They'll be ~$150 a piece from the dealer; I have seen folks post good results with cheaper options from eBay and Amazon.

 

What year & VIN did they change to 433Mhz?

 

IIRC the 315 was used only in 2010,11,12 model years

I bought some from Rock Auto on clearance a while back. They had 433s too.