TPMS Monitor

[Midnightsun]

Yesterday my tpms monitor warning light came on in the middle of the dash. As luck would have it I was on my way to the dealership to pick up an accessory so I asked them what gives. I could not get rid of the warning and I had no way of seeing any pressures on any tire so I assumed the receiver was defective.

Turns out they tell me I was low on air on 1 tire?? So they simply fixed the issue by filling it up with air? I cannot believe this to be correct as in the manual they actually show a diagram of the 4 wheels with one highlighted at a low 25lbs and I do believe this is what I should be able to see, not check tpms.

Anybody had some type of warning yet due to low air pressure? If so, what did it say.

 

[Midnightsun]

My service people are full of it. I let the air out of the drivers side front tire when I left the office to simulate lost pressure. Turns out there is no TPMS warning, just a low tire warning showing the car with the low tire highlighted in orange and the low pressure figure flashing in orange. Obviously there was some kind of malfunction with the TPMS system which somehow cleared itself.

 

[Pahaska]

The system polls the tires when you are under way. Temporary strong outside interference can cause the system to think it has seen a low tire, but the system can not find a low tire to indicate. That would cause an indication without locating a low tire.

 

[nb_mike]

This always happens when the weather gets cool also. I wish I could disconnect mine but I guess that is illegal in the nanny state.

 

[Midnightsun]

I do not think you understand what happened. I got a "Check TPMS Monitor" (or maybe it was sensor) warning pop up in front of me which could not be erased. I even shut the car down but to no avail. In the manual it says if you get this warning you need to bring it in to the dealer which I only found out after I got home and read the manual under TPMS.

When I let some air out to simulate a flat tire I got a low pressure warning indicating which one is low and it's pressure which is what we should see, not "Check TPMS"

2 very different warnings going on here.

 

[jimb100]

This always happens when the weather gets cool also. I wish I could disconnect mine but I guess that is illegal in the nanny state.

It just cost me $600 for brakes on my mini van. I wish I could just get rid of them and stop Flintstone style, but I guess that is illegal in the nanny state.

 

[Alwaysforward]

After reading the Caution & Warning notes in the manual, when this warning appears, the first thing I would do is check all the tire pressures. I think if you find one tire low and top it off, the system might reset itself without taking it to the dealers.

If I ever get this error, I will try this and report back.

 

[Midnightsun]

After reading the Caution & Warning notes in the manual, when this warning appears, the first thing I would do is check all the tire pressures. I think if you find one tire low and top it off, the system might reset itself without taking it to the dealers.

If I ever get this error, I will try this and report back.

The dealer claimed one tire was low by 2 psi. He filled that tire and the warning light reset itself after the car was started up again. 2 psi I nothing and this should not have happened. i will chalk this up to a momentary hiccup in the system and hopefully I will not see this again.

 

[jimb100]

The dealer claimed one tire was low by 2 psi. He filled that tire and the warning light reset itself after the car was started up again. 2 psi I nothing and this should not have happened. i will chalk this up to a momentary hiccup in the system and hopefully I will not see this again.

Why do you say this should not have happened?

My understanding is that the system works on a threshold. Drop below the threshold you get a warning.

Tire pressure drops about 1 psi for every 10 degrees of air temp. Here in Fla it can be 86 during the day and drop to 56 at night, enough to set off TPMS warnings on start up if the original psi was close.

Adding a couple of pounds of pressure doesn't hurt and keeps the psi from dropping below the threshold.

 

[GRIFF]

I have been running nitrogen in my 2012 5.0 since it was new. I just got a tank and a regulator and have been using it in all cars, my motorcycle and bicycles.

Seems not to fluctuate with temperature and holds pressure longer. Most noticeable with the bike and motorcycle tires.

Griff

______________________________

Help support this site so it can continue supporting you!

 

[Nikgen]

Why do you say this should not have happened?

I think it's because he said he got a check TPMS light - NOT a low pressure warning that would be expected if a tire was low.

 

[lobsenza]

How do you remove all the air when you put in the nitrogen?

 

[jimb100]

I think it's because he said he got a check TPMS light - NOT a low pressure warning that would be expected if a tire was low.

Does anyone here know how these systems are linked? I'm guessing the tpms tire sensors are read by one of the computers.

A software glitch would likely cause an occasional problem as described. Some combination of readings by the different sensors.

Changing the parameters by adding air to one of the tires would reset the system.

 

[lobsenza]

I have been running nitrogen in my 2012 5.0 since it was new. I just got a tank and a regulator and have been using it in all cars, my motorcycle and bicycles.

Seems not to fluctuate with temperature and holds pressure longer. Most noticeable with the bike and motorcycle tires.

Griff

How does running Nitrogen work? How do you get the air out of the tire to put nitrogen in? How do you get the nitrogen from the tank into the tire? What would I need to get a setup like this? It sounds like a great idea.

 

[BRJACKET]

It may be a problem with the sensor or battery. If it is like the lexus, each tire has a separate sensor with its own battery. If the battery wears out or the sensor goes bad then you get the warning you describe. The only thing the dealer can do is replace the sensor. This is one of my gripes. I had a battery go in my lexus and you can't just replace the battery. You have to replace the whole sensor which was about $180.00 on the lexus. And that is for each tire as it goes bad. In your case, if it is a sensor then the warranty should cover it.

 

[Midnightsun]

How does running Nitrogen work? How do you get the air out of the tire to put nitrogen in? How do you get the nitrogen from the tank into the tire? What would I need to get a setup like this? It sounds like a great idea.

IMHO nitrogen is a fad more than anything else. Just another marketing scheme with no real value for the every day driver.

This is pretty much spot on.

http://www.theglobeandmail.com/inco...fits-of-nitrogen-filled-tires/article1057306/

 

[lobsenza]

I think nitrogen has a small advantage. If I could do it easily for minimal cost, I would consider it. Otherwise, I will stay with air. I was just curious how his garage setup worked.

 

[GRIFF]

The dealer filled the car initially with nitrogen. Said they put it on a no tire contact lift, took the stems out and got as much air out as possible and with nitrogen.

I have used ever since. Once you put the tank deposit down, the gas is very cheap.

If I were to do it myself, I would get each tire off the ground, let out as much air as possible, them re-fill with nitrogen. The remaining air nitro mix will eventually bleed out thru the tire over a period of time and only nitrogen will remain.

GRIFF

 

[Aquineas]

Yesterday my tpms monitor warning light came on in the middle of the dash. As luck would have it I was on my way to the dealership to pick up an accessory so I asked them what gives. I could not get rid of the warning and I had no way of seeing any pressures on any tire so I assumed the receiver was defective.

Turns out they tell me I was low on air on 1 tire?? So they simply fixed the issue by filling it up with air? I cannot believe this to be correct as in the manual they actually show a diagram of the 4 wheels with one highlighted at a low 25lbs and I do believe this is what I should be able to see, not check tpms.

Anybody had some type of warning yet due to low air pressure? If so, what did it say.

I typically have to add air to my tires (due to TPMS notification) every year when it starts to get cool outside.

 

[lobsenza]

The dealer filled the car initially with nitrogen. Said they put it on a no tire contact lift, took the stems out and got as much air out as possible and with nitrogen.

I have used ever since. Once you put the tank deposit down, the gas is very cheap.

If I were to do it myself, I would get each tire off the ground, let out as much air as possible, them re-fill with nitrogen. The remaining air nitro mix will eventually bleed out thru the tire over a period of time and only nitrogen will remain.

GRIFF

Do you have a pump to pump the nitrogen from the tank into the tire or is it just the differential in pressure? How much did the tank cost? How much is each refill?