Check Tire Pressure won't go away
 

Wife called yesterday, Check Tire Pressure message is staying on and jumping between all 4 tires. No TMPS fault is displayed. I checked pressure, all 4 tires are 35 psi. We drove it last night about 20 miles and it would go off for a minute, then come back. I will try the reduce pressure to 18psi with engine running and then back up to pressure and then drive around but I'm thinking I have a dying battery somewhere. Any other direction I should take before I head to Discount Tire for a signal scan?

thanks.

Inflate up to about 40-42psi, and see if it goes away, then gradually deflate to the 35. This drove me crazy for months a couple of years ago.

Thanks, I will try. I saw a few threads on this issue but most of them also had the TMPS failure message, maybe I'll get that eventually. .. Saw richzak ended up just replacing all 4 to fix...

I had the warnings going from one tire to the next in a clockwise direction. For weeks, with rare exceptions, it kept happening. One day, I am not sure what prompted me to overinflate, but I did, and it went away. I keep the tires at 40psi, just so I don't have to take the risk of seeing that stupid thing ever again. Others, though, have gradually reduced the psi back to normal and had it disappear. Boy do I wish we had temperature, oil pressure gauges and dispsticks, and eliminated the tire pressure gauge. I'd rather check them myself as I've done for nearly 50 years.

+1

+1
I have been dealing with this EXACT same issue for a few weeks now (and commenting on it on a different thread).
I have the underinflate-and-refill technique (let some air out, down to about 20 psi, shut the engine off, restart, refill to proper pressure)-- like others, it works great for an hour or two before that crazy blinking tire pressure stuff starts up again.
I will try the overinfllate technique and see what happens.
Also: do you have 19 or 20-inch wheels?

19"

I did the underinflate all 4 to ~18psi, then inflated to 40 (all with the engine running though) and my wife has it out at work today. I'll report back to see if that worked. If so, I'll drop pressure down incrementally and see what happens.

Another thing, this car is 7 yrs old. I thought the batteries in the sensors only last 7-10 yrs?? Maybe we're chasing a problem that will not get fixed without replacement....

Exactly!
TPMS is a government requirement because under inflated tires cause gas mileage to suffer. It ain't going away and unfortunately, the government doesn't care about our oil pressure and coolant temp https://www.jaguarforums.com/forum/i...ons/icon10.gif

I hate my TPMS!!!!

Have 08 XK light came on tried inflation but didn't help ended up replacing all the sensors in the wheels from amazon and then replaced one front antenna it's been off for over 6 months now

If you have SDD software, you can disable it.

Edit:
Removed the comment regarding a shop disabling per Richard's comment below.

A couple of notes:

Yes, the US Government mandates that TPMS must be installed and working on our modern Jaguar and any other modern vehicles. Disabling the TPMS voluntarily may cause any insurance claims to be rejected for payment should you cause or create an accident due to tire pressure related issues.

If you were to ask any tire shop including Discount Tire or America's Tire to disable the TPMS, they will "not" do it.

The problem is frustrating and there is a good chance that the 7-year old TPMS sensors are having intermittent battery problems. The batteries in the units can not be replaced. The TPMS unit gets replaced with a new one. The expected life of a TPMS in tire sensor is 7 to 9 years.

I fought this, a frustrating problem for a long time, and literally drove me crazy with the dash warning light going on and off and then back on. I had my TPMS scanned numerous times and they all read OK. The warning light continued to go and off for months. At least 1 year.

Finally, I bit the bullet to simply replace the TPMS with Siemens OEM VDO sensors. The cost was about $180.00 or so. Upon having Discount Tire remove and install the new TPMS at $8.00 each wheel, I never had any related issues again. I had peace of mind. The tire does not have to be removed to remove and replace the new units. The tire is simply deflated and then pulled back to gain access to the TPMS. It takes about 20-30 minutes for the tire tech to complete the work. The OEM Siemens VDO TPMS are available via Amazon where I purchased mine.

The Jaguar will quickly relearn the sensors with 5 to 10 minutes. The warning lights go out.

Issue resolved and no more frustration. If the XK/XKR is 7 or 8 years old, just replace the TPMS. You will have to replace them soon anyway as the battery life is close to dying out. Keep in mind a 2008 model was built in 2007, and a 2009 model was built in 2008. The date of production/manufacture is listed on the inside door jam.

Best to you.

Richzak -
Thanks. My car's in-service date was August 2009 (an earlybird), so I'm coming up on 8 years. Makes sense.

I replaced mine, I think last month. I bought the Sieman VDO models. I had to input the part numbers to get them to accept. I have one outlier. LF wheel has tripped an error code twice. I just swapped the Antenna's L to R. Will see if it trips on the right now.

Error code just says the LF is not communicating.

If it trips again, I'll move the tire to the right to isolate the TPMS or if the defect is in the wiring to the module.

I have SDD, how do I disable TPMS in SDD?

I had this problem too - went away after I disconnected and reconnected the battery.

The only owners that hate tpms are the ones that check their tire pressures regularly. I personally prefer them for several reasons. On more than 1 occasion mine warned me i was loosing air from nails so i could air the tires up and then repair before damaging the sidewalls from low air pressure then requiring replacement.
And 2 i used to see cars come in all the time with 5-15psi in the tries all the way around before tpms. Now the only time i ever see this is on cars that are older and dont have tpms sensors. Imo a good change for the public enmass

deleted. repeated post

Replacement TPMS
 

TPMS Newbie!
I have removed my Sentas with, presumably, 2007 TPMS. All were still working perfectly.
New wheels have none. Does anyone have a list of compatible aftermarket sensors? Is frequency the only discriminating factor?
Could determine this info for myself with concerted Google effort but I know others will have trodden this path before.

Nigel - there are multiple threads dealing with the TPMS. In one of them Richzak identifies which sensors he put in his XKR and also where he acquired them.