I started getting a TPMS fault on all tires in February of he winter of 2020. The fault would just wander around from tire to tire eventually showing that all my tires were underinflated. Naturally, I checked all my tires and they were exactly as specified on the door sticker, 33 front and 36 rear. So I stopped by my local tire store and and got new tires and sensors. They initially installed the wrong sensors and on my second visit they installed the correct sensors and I was good for the summer.

So late this fall I started getting exactly the same fault on all tires. Sometimes it would clear for awhile and the come back a few miles down the road. Were the new sensors dying from sitting on the shelf too long? So I again stopped by my local tire store and they checked all my tires and said the sensors looked good! So now what? Pulling the TPMS fuse just brings about another fault. Too bad. Again, my tires are inflated to the correct pressure using a very fancy tire pressure gauge.

I've looked through all the threads here and I'm not seeing anything that helps. This fault could be somehow related to the temperature. Winter faults, Summer just fine. Any ideas? I'm fresh out. Thanks

 

Make sure that your battery is fully charged. Most here use a battery maintainer such as CTEK. I’m surprised that you couldn’t find any helpful threads on this topic as it’s a common fault that creates a lot of discussion.

 

Try this: deflate all 4 tires to 25 lbs and make sure you get TPMS warnings for each tire. Inflate 10 lbs over sticker - 43 fronts, 46 rears and drive around for 10 minutes. Wait 10 minutes and then reduce pressures to 33 front and 36 rear.

Let us know if that made any difference.

 

Same issue... showed up after a few short drives... went away after fully charging the battery.

Get your battery checked and fully charged.

 

All 4 at once points towards a global fault- I agree recharge/re-condition the battery first

 

Thanks for the replies. So I charged the 4 year old battery with my 3 Amp Battery Tender on the 29th and went for a short ride today and the TPMS fault appeared within 100 yards. No Joy.
So I tried the tire deflation and over inflation suggestion. Sure enough, deflation to 25 pounds caused the same low pressure on all tires fault I had before I started. Then I over inflated all tires to 10 pounds over the recommended tire pressure and took a 10 minute ride with no faults whatsoever. Great! Then I waited 10 minutes, deflated the tires back to their recommended 33 and 36 and went for another ride with identical results to what I had before I did this drill. At least I know I'm good if I grossly over inflate the tires!

I've reread all the TPMS threads and all I can think of is getting 4 new OEM sensors and have them installed.
Still looking for other solutions, Thanks again.

 

It didn't help.

 

A battery tender isn’t a battery charger. Your 4 year old battery may need to be replaced. You should charge it with a battery charger and then test it. I went through this and am convinced that it’s not the sensors, it’s the battery.

 

When guesswork fails, I always turn to SDD to find out what is causing fault messages. It's a lot cheaper than throwing parts at a Jaguar.

The TPMS comprises:

Sensors (4 - one in each wheel or 5 if you have a spare wheel)
Initiators (4 - one behind each wheelarch liner)
Receiver (1)
Module (1)

Everything from battery to Receiver is hardwired so there's plenty of possibilities for harness or connector faults. These would likely be universal and affect all wheels. Sensors to Initiators is LF transmission and Sensors to Receiver is RF transmission and a fault is likely to affect an individual wheel.

There's a wide range of relevant Cxxxx and Uxxxx codes that could help narrow down the cause.

Graham

 

A few facts to consider:
When my battery was low four years ago and needed to be replaced, there were no TPMS faults before or after.
When I over inflated all my tires, the TPMS faults ceased.
I watched as my existing TPMS sensors, replaced February 10, 2020, checked out good and read the proper tire pressure last week on the tester at the tire shop.
My "Battery Tender" charges the battery at 3 Amps and did so a couple of days ago. Seems like a pretty good battery charger to me.

 

I had the exact same symptoms. The Jaguar dealership diagnosed it as the TPMS module needing to be replaced. Zero issues since replacing the TPMS module, even with now 9 year old original senders.

 

So I overinflated the rear tires to 41lbs and left the fronts at 33lbs. Went for a drive and only the front tires were reporting alarms. Overinflated them to 38lbs and they still alarmed, so I overinflated them to 40lbs and everything is happy. Looks like the problem is the TPMS receiver has defaulted to 40lbs! Does anybody know if the TPMS receiver can be reprogrammed back to the correct pressures of 33 Front and 36 Rear?

 

In one of the threads dealing with this issue, the poster returned the TP to the recommended settings and there were no more alerts. Why not give it a try?

 

That was Stuart. I tried it, recounted in my "Phooey" reply. It didn't work. After deflating the tires to the recommended TP, all the tires alarmed again.

 

Why two separate threads Win?

I replied to the other one