Direct Tyre Pressure Monitor Issue.

[Go Zizzz]

My Van is a 2024 T6.1 Ocean 204 4Motion and has the direct tyre pressure monitor system fitted, which gives a readout of the actual pressures in each tyre. It uses transmitters in the valves to measure and somehow transmit these readings to the info display. It provides amber warnings when one or all of these is not as expected. For instance on a recent trip when the temperature got close to freezing overnight, it warned me in the morning when they indicated 41 PSI all round and they were set to be 45 PSI. This was easily solved by putting a couple of puffs in each tyre to keep them within limits.

The issue I have now is that I'm getting the "Check Tyre Pressure" warning when all 4 indicate 44 PSI but one (NSF) is displayed in amber. This morning I noted that they all displayed 42 PSI with again the NSF in amber. I think the issue might be with the NSF valve but it does seem to be transmitting a correct and changing pressure. The van has done 19,000 since new but the NSF tyre was replaced after a puncture at 12,000.

Does anyone else have this issue or better still a way to solve it?

 

[vbk1975]

My Van is a 2024 T6.1 Ocean 204 4Motion and has the direct tyre pressure monitor system fitted, which gives a readout of the actual pressures in each tyre. It uses transmitters in the valves to measure and somehow transmit these readings to the info display. It provides amber warnings when one or all of these is not as expected. For instance on a recent trip when the temperature got close to freezing overnight, it warned me in the morning when they indicated 41 PSI all round and they were set to be 45 PSI. This was easily solved by putting a couple of puffs in each tyre to keep them within limits.

The issue I have now is that I'm getting the "Check Tyre Pressure" warning when all 4 indicate 44 PSI but one (NSF) is displayed in amber. This morning I noted that they all displayed 42 PSI with again the NSF in amber. I think the issue might be with the NSF valve but it does seem to be transmitting a correct and changing pressure. The van has done 19,000 since new but the NSF tyre was replaced after a puncture at 12,000.

Does anyone else have this issue or better still a way to solve it?

If the pressure falls below the trigger threshold then it will only reset once it has reached the recommended pressure. So if the NSF has dropped to 41 (assuming this is the lower trigger value), then even if it goes back up to 42 whilst driving, it will only clear if taken back to recommended pressure, there is normally a 10 min window before a warning is set unless it is a significant drop. So it won't flag on the wheels at 42PSI because they haven't fallen to the trigger value.

So i would monitor the pressures from the start of the journey and see if they start at 41 or below. These systems almost all calculated & transmitted in kPa, so rounding up or down can also cause triggers for the same PSI value, but the actual kPa be different. (you could swap to kPa just to check)

The trigger values are different depending on the wheel size, 10% lower than the recommended pressure (in kPa) after 10 mins is likely, same for over pressurised.

 

[Andy C Berks.]

We have a 2023 4 motion, so this is our third UK winter with it, and for the first time I have experienced exactly the same issue that you described on a number of occasions since November. The only previous time I had the amber warning flash up was when we actually had a nail in the tyre.
After a few miles of driving, when the tyre has warmed up the light always goes out - even though all 4 tyres drop ever so slightly below target in the cold, its minimal so wouldn't have thought the light would come on (it didn't at all the previous 2 years). Mine is the NSR that's always shown as the culprit even though the OSR is usually an identical pressure on the screen. Maybe they have tweaked the software, so that the tolerances are tighter than previous. It's a minor annoyance that I suppose does at least prompt me to pay more attention to the tyre pressures more regularly than I did hitherto !

 

[PaulGC680]

Hi
What I would try is having the one tyre that triggers one psi more than the others - then see what happens.
Please report back either way .

 

[Black Forest]

I can't help with your issue but our same spec van on a 2023 build has two sets of wheels with the sensors in each wheel but it's got the indirect / ABS view on the head unit. Quite odd and in all honesty, it makes wheel and tyre swaps easier.