Hello everyone

I know that this has been talked about multiple times, but I didn't find anything specific to my case. Please bear with me if I missed the information.

I have a 09/2011 FX Base. Last night while driving on the highway, "TPMS fault" warning came up. NO rain/water, didn't run through any pot holes, have not changed tires, nothing of that sort. The message center says to check the hand book. I have checked cold tire pressures and they are all appropriate.

From what I understand, does it mean that atlas 2 of the sensors are malfunctioning. I don't have the knowledge to know why. There batteries should still be good. I still have original warranty, if they need to be replaces, is it all covered under warranty?

Thanks

 

Happened to me a few months ago. Once you make sure that all tires are the same pressure, just keep driving and it should go out after maybe 100 miles or so. This happens when the module loses its frame of reference and needs awhile to regain it.

If not, possibly one of the sensors has failed (or battery died)

 

If it's under warranty, take it to the dealer and have them worry about it! It's a tricky system, I had a TPMS reader located behind the wheel well cover fall out of place on my 08 XJ. But, this was discovered AFTER I purchased a new sensor.

 

I had a similar issue with my 2011 XFR. The fault message went out after a few hundred miles as nasa25 has suggested. Pleased that I resisted the temptation to replace sensors.

 

Thank you for your responses. It went away after about 10 miles of driving. Weird.

From what I have read, this system is not the best out there. I am inclined to not spend $$ to change batteries/sensors when that happens. And will just drive around with tPMS fault !!

 

A lot has been posted here about the TPMS monitor failure warning. You should do search under "TPMS" or "Tire Pressure Monitor." I started getting these random alerts when my car was nearly 5 years old. Each time, I clear the alert, which reduces it to a smaller alert in the information screen, and then goes away by the next day, at the latest. It has been occurring approximately every five weeks for about six months now.


Based on what others have posted, the solution appears to be to have the TPMS module reflash done by the dealer under technical service bulletin JTB 00317. Others who have had this done have had success. Since my car is not covered by warranty anymore, the dealer said they would charge me 1/2 hour of labor to do it but could not guaranty that it would solve the problem.


Since I have to pay for this, I haven't been in a big rush to get it done. I'm sure if I just asked them to fix it, they would charge me 2 hours to diagnose it and replace the TPMS module, which I understand costs around $250+.


Good luck.

 

Thank you for your response. I see you are from LI. I live in Hempstead and made the purchase from Great Neck.

 

Also, these TPMS valve stem transmitters in the rims use an embedded battery with a service life estimated at 3-7 years from activation of the unit. If the transmitter signal is too weak the system will not be able to read that wheel.

Also, it is fairly common for the receiving units behind each wheel to become dislodged or even disconnected, sometimes by ignorant service personnel. I do not know the exact location of each unit but I believe they are behind the fender liners. The transmitter and receiver for each wheel have to be in range.

Finally, I have noted occasional random faulting when more than one tire is low in pressure. The first step should always be to inflate all four tires to 35 psi and then reduce to the spec which I think is around 32 psi. Remember to allow for temperature change if you set tire pressure in a warm garage but drive in winter temperatures. You get a 1 psi drop in measured tire pressure for every 10F drop in temperature. If you set the pressures at say 55F and then drive at well below freezing the TPMS will sense a 2-3 psi drop in pressure, enough to cause a fault for all four tires simultaneously.

 

My experience: I had a small collision about 6 months back. put the car in the shop for repairs and once i received the car back i had the TPMS system fault. Returned it back to the shop(of course not Jaguar) and they reseached several things without a fix. I was told that they would make an appointment with Jaguar and i could drop the car to them so they could take it to Jaguar, of course i didnt want to be without my car for however long it was going to take so i did some reading on this. I tried just about every suggestion given with the exception of taking it to Jaguar(checking antenna drivers and rear, pulling fuse..etc...). still had teh same ole system fault. So i decided i would take it to Jaguar myself when i get time..after about 4 months my thermostat and aux water pump went out so i repalced them and only while replacing the under carriage i noticed that there was a second TPMS ANTENNA on the passenger side of the car that wasnt seated in the housing. I read several post and i never saw a second one mentioned. only the front drivers and the rear...sure enough after about a 5 min of driving the light went away and never returned. I hope this helps someone.

 

There should be four receiver antennae, one for each wheel close by the wheel well in each case.

 

I had this problem many times, and I remember on one of the posts that you can re calibrate the TPMS with the engine off but in on position and release air from all tires (20%+) and inflate again.

I've done that and i haven't gotten that on my dash (and these are old sensors)

 

I think, but don't know, that you can achieve the same result by over-inflating all four tires by several psi and then bleeding pressure down to the desired level.

The last time my TPMS displayed rotating low pressures it turned out that all four tires were underpressure by the same amount due to ambient temperature drop. Raising the pressures to correct values extinguished the warning. Point being I think sometimes what looks like a TPMS fault is actually just the system working correctly and adjusting all the tire pressures corrects the display.

I have also experienced single tire warnings with no low pressure that have mysteriously corrected themselves after a couple of ignition cycles.

 

Let me rephrase, your not adding 20% more air... your deflating 20% air, while its switched on, not started, then inflating that you released. This might work for some, others might need to replace the sensors like others suggested.. But i think this method also works, because I dont know how many of you guys actually change your tires your self or have a shop do it, but when they did mine, the tires and wheel left the car about 7-10 feet, balanced, filled up with air, and then put back to my car. Sounds like a technicality but it would make sense that the sensors wouldn't know the tires were changed cause, it left the connectivity range..

 

Mine did the same thing but randomly came on and off for all 4 tires. It was a reflash issue. There was a bullitin sent to dealers and it should be done for free. Mine was. I had to tell them about the notice and basically had to get the service manager involved. When both sensors show its a fault. Not the sensors themselves.

 

I have the same problem with mine occasionally.

The TPMS fault will some time come on at start up, other times it will come on after i start driving.

Other times it will say TPMS malfunction.


Havent had it looked at yet just because it there is no consistency to it.

 

You should call your dealer service dept. don't ask if there's a TPMS bulitin, tell them you have been informed on the forum there IS one. You may be able to find it and print off. They should reflash the system for free.

 

The pattern for me is that every 5 weeks or so, the TMPS fault warning appears. I clear the warning, then it stays on (whether I turn the car off or continue driving) and it goes away in 10-20 miles. I'm going to bring my car in soon to have the TPMS module software reflashed as per Technical Service Bulletin JTB 00317.

 

The TPMS system on the Jag XF is annoying. Jag has not calibrated the system correctly for daily driving - fire that engineer he is useless.

 

I'll share my personal experience, and everyone can make their own judgements.....


FWIW, even though the spare tire supposedly DOESN'T have a TPMS, on two occasions, when the TPMS symbol lit up on my dashboard, I checked the spare tire, as it was a couple of pounds low. Topped it up, and the light went off.






Another issue I had, was a horse of a different color. 2 years ago, our XF became a DD, after we bought a '12 XJ-L. That meant a second set of wheels, with snow tires, were required, and of course, a second set of TPMS. At the time all of this was happening, I was a part-time employee of Advance Auto Parts, so I bought the TPMS there. They were from Dorman.


Long story short, the OE computer wouldn't "recognize" the aftermarket sensors. I initially put the snow tires on the car, drove it the required 2 miles, but the dash light wouldn't go out. Since I was good friends with the dealership's lead technician at the time, I drove over there, and asked what I should do. He hooked up the shop's diagnostic computer, did a "re-learn", but to no avail.


In the end, I had a couple of conversations with the Dorman Tech rep, he admitted that they were having issues with some of their sensors, and shipped me 4 OE sensors, in exchange for theirs. Problem solved.




Maybe this will be helpful to some of you........