Tire Low Indicator not turning off

[Asm2500]

Hi there,

I have bought a 2020 Power wagon 2500, I had no issues until a week ago the Tire Low indicator somehow glitched and I have tried to disconnect the battery for overnight and I used alfaobd to clear the codes if any, unfortunately it didn't work.

Also I have deflated 4 tires and inflate them several times and drove for more than 10 mins with no luck, but I noticed that the system did not recognise the other tires as Low on air like the rear right Tire highlighted in red.

Please advise if there's anything I can do to resolve this matter.

Best regards

ASM

 

[ClawSS]

Take the pressure past 65 lbs and bring it back down. I may be mistaken but it wants to see a high pressure to reset, then with AlphaOBD or other tools you can set the min. pressure more reasonably before the warning is engaged.

 

[Asm2500]

Thanks for your response, Airing up didn't resolve the issue, On the other hand increasing the threshold bar solved it right away, I moved the bar to 39 Psi and now I have no issues and the light went off immediately .

Thank you and hopefully this can resolve someone else issue.

 

[SolidAxleorBust]

A sticker over the light always works for me.

 

[PhishWagon]

Not sure where you’re located but I’ve noticed really cold weather triggers the censors as well. We’ve been in the 20s the last few days in Eastern WA and my censor went off randomly this morning. If I remember right this happened to me last year also. Waited till temps got above freezing for a few days and bump pressure over 60 and it went off.

 

[DrTron]

but I’ve noticed really cold weather triggers the censors as well.

That is because they are not temperature-compensated and actual tire pressure drops with temperature.
It's not exactly an ideal gas, but p*V=n*R*T, with the temperature in Kelvin.
So a drop from 70F (294K) to 20F (266F) results in a 10% drop in tire pressure.

 

[PhishWagon]

That is because they are not temperature-compensated and actual tire pressure drops with temperature.
It's not exactly an ideal gas, but p*V=n*R*T, with the temperature in Kelvin.
So a drop from 70F (294K) to 20F (266F) results in a 10% drop in tire pressure.

Makes sense. However, all 4 tires are about the same PSI today but only 1 shows low pressure and set off the error. I also think the sensors tend to have issues in very low temps