Well, since this thread has been highjacked I'll just swim with the current.

Here's another question related to the tire pressure monitor. Arne writes that, to use the monitor, "you have to turn ignition on without starting the engine." Unhingd agrees: "Follow Arne's advice."

But it was my understanding that the tire pressure monitor would only work while driving. This has definitely been the case with EVERY car I've owned before my F-Type. It was explicitly spelled out in the owner's manuals. The F-Type manual doesn't specify one way or the other—this manual really sucks—but I was just assuming it's like other cars.

Thoughts?

I am almost certain the tire pressure can also be checked when the car is moving. On older cars with older technology, the tire monitoring system relied on measuring wheel rotations to determine if a tire was low on pressure., so the car had to be moving. On newer vehicles there is an actual pressure sensor in each wheel that emits a 433hz radio signal that is picked up by one of the onboard computers. For these sensors, it shouldn't matter whether the car is moving or not.


However, it's best not to be scrolling through five vehicle info screens while you're flying down the road.

On my 2016 the tire pressures are displayed and updated while driving. I picked up a nail in my LR tire and was keeping an eye on the pressure dropping as I drove home.

Interestingly, the recommended pressures were replaced with (...) while in motion.

Frenchy, I am sorry if you feel that the tread has been highjacked, but as far a I can see, all the comments here are either directly or indirectly linked to your first question (which was also answered in the very first respons you got).


Regarding monitoring the tire pressure while driving, this seems to be different on different model years. On my 2015 model, it can only be monitored when standing still with the engine off but ignition on - just as it is with the oil level. I can not get access to this part of the menu while the engine is running.


However the display layout (and probably the "logic behind the screen") was changed for the 2016 and forward models, and as jf1 mentions over, it will be displayed while driving on these models. The reason for that might be that it has been made easier/quicker to get access to that part of the menu in the 2016- models?


On my 2015 model there are some sub-menus that are only available when the car is not moving/engine not running. I am not shure how that is on the 2016- models, but this has also been the case on several other cars I have owned previously (Audis and VWs), and the manuals have stated that the reason for this is that it is not safe to operate these menus while driving.

I came across your question while looking for info on my TPMS. I just put snow tires on with new monitoring sensors. I immediately got the TPMS fault lights. When I checked the tire pressures I had the ... show up. I took it back to the shop - they had to use a reader plugged into the car's computer to clear the ... - hope that helps.

Did you bring it back to the shop right away, or did you give it time to see if it would sync on its own after driving several miles?

I took it back right away. They switched sensors and the TPMS light still came on. He said I'll have to drive the car for a few days to see if it will finally register - which I am in the process of doing now. So now so far I've driven about 25 miles and the TPMS warning light is still lit and I'm back to the ... on the tire pressures. So frustrating. You'd think by now there would be some convention on this stuff.

From your post history here, it looks like you recently got your 2015 FType. What is your VIN, as this will determine which TPMS you will need? Do you know which sensors the shop first installed, 315 or 433MHz sensors and did they switch to the same MHz as before? Check out this thread:
https://www.jaguarforums.com/forum/f...number-191529/

First they installed the 433, then I took it back and they measured the sensor on one of my summer tires as 315. So they replaced all the monitors to 315. I'm still waiting for the car to read them. I've driven it about 25 miles so far but the warning light is still on. He said he will contact the corporate office because he is out of ideas. That's when I came to the forum looking for ideas. So far everything I've read here on Jaguar Forums has been tried. Thanx for your input. Much appreciated...

Just keep driving. Mine took like 3-4 days.

I'm surprised it took so long. But this is really valuable information. Thanx... I'll stick with it and if it works on my car I'll relay the info back to the shop. They don't get many F-Types and may help them in the future.

Did the light ever go out on its own after a few days?

Unfortunately - NO . . . It's really irritating this is a problem in the first place. You know, the ol' "If they can put a man on the moon..." argument. Trouble is they landed on the moon 50 years ago. And they did it with a computer that had the computing power of a shrink-wrapped $2.00 calculator you see while standing in the check-out line at Walmart.
I guess I'll give it a few more days before I take it back to the shop. The last time I was there they told me they might have to contact the corporate office because they are out of ideas.

Dang. If they are the right frequency for your build, the system should learn them. Like I said, mine took over 50 miles. Let us know how the dealership gets this resolved.

I'll keep you informed. I just contacted the ECU Tuning Group that is advertised along side of Jaguar Forums - just to see what they offer. Without changing the pulley on the supercharger - and just programming through the OBD2, they claim they can take my 495 horsepower engine up to 571 horsepower - for $1700. And over 600 horsepower if I change the supercharger pulley for $2000. That's a lot of 'bang for the buck' - especially considering if I had bought the R model in the first place it would have cost another $25,000. Very tempting - LOL.....

OP, I've noticed the same thing, the current tire pressure with "(--)" under each number. As you mentioned, the manual is useless in this regard, but here's what I've found for what it's worth:

If I check the tire pressures immediately upon starting the car, or shortly after driving, it will show the current pressure for each tire with "(37)" under each, indicating the recommended tire pressure. Once the tires warm up and the pressure increases, the values in parentheses change to (--).

In addition, the Tire Info menu is disabled on my car if the engine is running, but can be accessed if the ignition is on while the engine is off.

Hope this helps somewhat.

Any information is valuable - Thanks, My Man. Tire info is disabled when the engine is running on my car, too. If the warning light ever goes off, I'll have to check about the pressures showing the (...) after the tires warm up. I'll let you know.

FYI to all: if you have an early model prior to the K273xx VIN cutoff using the 315 MHz monitors you will not be able to read the tire pressures while moving. Only the 433 MHz monitor system appears to allow that. Dave (DJS), can you confirm based on your car?

On MY14, the tire pressures are never displayed. I've never seen any indication I even have TPMS, but my tires never get low.

I can hardly believe you don't have TPMS. If it is the same as on my car, you cannot access the tire pressure while the car is running. Turn on the car's electronics by pressing the ignition button without your foot on the brake. Then go into the dash screen - now you should have access to the last option - which has the tire pressures.