Reset Tyre Pressure Monitoring? - Page 1 - Boxster/Cayman - PistonHeads UK

My Spyder keeps on warning me about low tyre pressures (sometimes stating by as much as -6 psi). I do not mind this if they are really that low, and I do set them at -3 psi "cold" as the pressures quickly get to the right level as the tyres warm up. I have checked pressures independently, using an electronic gauge. But even when they are at the correct pressures (hot) according to the MF display, I still get low pressure warnings, every so often whilst running. This undermines the usefulness of the system, as I might well ignore a justified warning. Is there a reset process hidden somewhere?

I am bumping this - yesterday whilst running in pretty hot (for UK) conditions, my pressures went from 26/29 (set "cold") to 29/32 fairly quickly. This was displayed on the MF display, and given that the recommended pressures are 29/33, all good, yes? But no - the MF display kept giving me low pressure warnings, sometimes stating as much as -6psi. How can it display the actual pressure, during the drive, with just -1psi shown on the rear tyres, yet flag under-inflation of 6psi? Ideas please!

Mines has done this as well after a trackday where pressures were adjusted. Can’t remember where I read it but the “fix” that has worked for me: Set pressures to what they should be, go into TPM menu and toggle to winter wheels, come out of that menu, go back into the menu and toggle to summer wheels Settings can only be changed when stationary and it sometimes takes a lengthy drive (sometimes 20mins but normally less than a minute) and all warnings disappear. Seems to be a bit of a glitch.

Mines has done this as well after a trackday where pressures were adjusted. Can’t remember where I read it but the “fix” that has worked for me: Set pressures to what they should be, go into TPM menu and toggle to winter wheels, come out of that menu, go back into the menu and toggle to summer wheels Settings can only be changed when stationary and it sometimes takes a lengthy drive (sometimes 20mins but normally less than a minute) and all warnings disappear. Seems to be a bit of a glitch.

Change the tyre mode from summer to winter. Accept and come all the way out of the menu. It will start relearning. After few mins go back in and switch back to summer.

Mine did this for the first time yesterday. Exactly as the OP describes. All pressures correct for each corner but kept giving a -4psi warning on one corner. I did as above and set to winter tyres then back to summer tyres and then did the running required to set the new values. Worked fine after that and again today. Strange as I’ve never seen that issue before on any of my cars with this system. Funny that it happened yesterday and saw this thread today.

Many thanks everyone for the replies. I will get onto this tomorrow

Well….I tried the routine described above, including switching off the ignition, removing the key, after confirming the S to W change. Then reversed the process to get back to S Something was definitely going on, with re-learning because the 4 pressures did not appear for quite a while (a couple of miles) but before this - almost immediately after driving off - I got the -4, or -6psi warnings. And this continued after the tyres were warm and displaying 29/33. Vexing….

So fixed now?

TDT said: So fixed now? No, unfortunately not. Still getting the same warning messages - usually -4 or -6psi, even though the pressures shown on the MF display were 29/33, as per the book. Given the consistency of the warning numbers, always -4 or -6, but never -5, this must be some sort of software error. I will try again tomorrow, but let the system learn as if they are Winter tyres, then when I have pressures displayed, wait for the errors. Then reset to Summer tyres and let the system learn again

So strange. After never having seen this before, it did exactly the same thing again today. -6psi on right rear, the same as the other day. Reset again via Winters/Summer sizes cycle and fine for the rest of the day. As before, never seen this on any of my cars before. Just started in the last few days. Jack

jackwood said: So strange. After never having seen this before, it did exactly the same thing again today. -6psi on right rear, the same as the other day. Reset again via Winters/Summer sizes cycle and fine for the rest of the day. As before, never seen this on any of my cars before. Just started in the last few days. Jack Probably that there Climate Change thing....;-)

I reported the same on the 4.0 GTS thread a few weeks ago (and got no replies), so I am glad i'm not the only one. Drives me nuts, and does it every time I drive off. Always the front near-side wheel and always -0.6bar. Sometimes it will reset during a drive, then come back on.

Have had this on my Macan and GT3. It happened at the same time after I hadn't driven either for about four weeks, so might somehow be battery related. Macan was fixed via the reset above. No issues since. GT3 by changing monitoring setting to Performance. No issues since

Jefferson Steelflex said: I reported the same on the 4.0 GTS thread a few weeks ago (and got no replies), so I am glad i'm not the only one. Drives me nuts, and does it every time I drive off. Always the front near-side wheel and always -0.6bar. Sometimes it will reset during a drive, then come back on. Yours might be resetting as I have noticed that my tyre pressure increase after several miles of driving.They can rise as much as 5 psi on a hot day. Hve you tried (i'm sure you have) resetting your tyre pressure when cold by 1 psi all round, doing a TPMS reset and see what happens?

https://www.youtube.com/watch?v=Pd4pZrYeiq4 worked for me (on a 981)

I have done the full reset process 2 or 3 times now, including driving on the "W" setting until the system has "learned" the change, then back to "S" learning. Now the weather is much cooler, I have raised the "cold" pressures to -3 psi relative to the recommended settings. On driving for a few miles, the pressures come up to within 1 psi of the recommended settings, but I am still getting error messages. Crying "wolf" is the expression that springs to mind.

If you're running around 30 psi, make sure you select 'comfort' pressures in the MFD. That way the TPMS warning won't go off.

scrounger73 said: If you're running around 30 psi, make sure you select 'comfort' pressures in the MFD. That way the TPMS warning won't go off. Sorry for the slow response - does this apply to the Spyder, or only to GTS models? I could not find this setting in in the MFD.