TPMS / TPWS Questions/Comments/Concerns
#62
Another benefit of nitrogen is that has no water in it, air has water. This will help maintain wheels that are chrome. I had chrome flaking on my MDX and was told by my wheel shop that nitrogen preserves the integrity of the wheel along with better tire pressure performance.
#64
Did a quick Google search and this came up at the top of the search page.
Popular Mechanics
http://www.popularmechanics.com/cars...stions/4302788
Popular Mechanics
Q: Is there any advantage to using nitrogen instead of compressed air in tires? Will I notice improved fuel economy or a smoother ride? Will my tires last longer?
A: Sort of. From the top: Air is 78 percent nitrogen, just under 21 percent oxygen, and the rest is water vapor, CO2 and small concentrations of noble gases such as neon and argon. We can ignore the other gases.
There are several compelling reasons to use pure nitrogen in tires.
First is that nitrogen is less likely to migrate through tire rubber than is oxygen, which means that your tire pressures will remain more stable over the long term. Racers figured out pretty quickly that tires filled with nitrogen rather than air also exhibit less pressure change with temperature swings. That means more consistent inflation pressures during a race as the tires heat up. And when you're tweaking a race car's handling with half-psi changes, that's important.
Passenger cars can also benefit from the more stable pressures. But there's more: Humidity (water) is a Bad Thing to have inside a tire. Water, present as a vapor or even as a liquid in a tire, causes more of a pressure change with temperature swings than dry air does. It also promotes corrosion of the steel or aluminum rim.
If I ever need to top off a tire when I'm out on the road, I'll always briefly depress the tire chuck's valve with my thumbnail and vent some air. If my thumb gets wet, there's water in the line. Some gas stations don't do a very good job of keeping the humidity out of their air system. I don't even like to use a water-based tire-mounting lubricant unless I can let the tire bake in the sun for a couple of hours before I air it up and seat the bead. I've dismounted tires (not mine) that had several quarts of water inside—probably from a compressed-air hose that collected water and was never purged properly.
How is water relevant to a nitrogen discussion? Any system that delivers pure nitrogen is also going to deliver dry nitrogen. Filling tires with nitrogen involves filling and purging several times in succession, serially diluting the concentration of oxygen in the tire. This will also remove any water.
It's certainly simple, although time-consuming, for a tire technician to fill and bleed tires. But most shops use a machine that not only generates almost pure nitrogen by straining the oxygen out of shop-compressed air, but will also automatically go through several purge cycles unattended. Some shops have been charging as much as $30 per tire for this service. I think that's too much. If you're buying a new tire, it should be far less. Still, the nitrogen generator, filling system and technician's time aren't free—the dealer is entitled to some return for that.
So, to answer your specific questions: With nitrogen, your tire pressures will remain more constant, saving you a small amount in fuel and tire-maintenance costs. There will be less moisture inside your tires, meaning less corrosion on your wheels. You will not be able to feel any difference in the ride or handling or braking, unless your tire pressures were seriously out of spec and changing to nitrogen brought them back to the proper numbers.
A: Sort of. From the top: Air is 78 percent nitrogen, just under 21 percent oxygen, and the rest is water vapor, CO2 and small concentrations of noble gases such as neon and argon. We can ignore the other gases.
There are several compelling reasons to use pure nitrogen in tires.
First is that nitrogen is less likely to migrate through tire rubber than is oxygen, which means that your tire pressures will remain more stable over the long term. Racers figured out pretty quickly that tires filled with nitrogen rather than air also exhibit less pressure change with temperature swings. That means more consistent inflation pressures during a race as the tires heat up. And when you're tweaking a race car's handling with half-psi changes, that's important.
Passenger cars can also benefit from the more stable pressures. But there's more: Humidity (water) is a Bad Thing to have inside a tire. Water, present as a vapor or even as a liquid in a tire, causes more of a pressure change with temperature swings than dry air does. It also promotes corrosion of the steel or aluminum rim.
If I ever need to top off a tire when I'm out on the road, I'll always briefly depress the tire chuck's valve with my thumbnail and vent some air. If my thumb gets wet, there's water in the line. Some gas stations don't do a very good job of keeping the humidity out of their air system. I don't even like to use a water-based tire-mounting lubricant unless I can let the tire bake in the sun for a couple of hours before I air it up and seat the bead. I've dismounted tires (not mine) that had several quarts of water inside—probably from a compressed-air hose that collected water and was never purged properly.
How is water relevant to a nitrogen discussion? Any system that delivers pure nitrogen is also going to deliver dry nitrogen. Filling tires with nitrogen involves filling and purging several times in succession, serially diluting the concentration of oxygen in the tire. This will also remove any water.
It's certainly simple, although time-consuming, for a tire technician to fill and bleed tires. But most shops use a machine that not only generates almost pure nitrogen by straining the oxygen out of shop-compressed air, but will also automatically go through several purge cycles unattended. Some shops have been charging as much as $30 per tire for this service. I think that's too much. If you're buying a new tire, it should be far less. Still, the nitrogen generator, filling system and technician's time aren't free—the dealer is entitled to some return for that.
So, to answer your specific questions: With nitrogen, your tire pressures will remain more constant, saving you a small amount in fuel and tire-maintenance costs. There will be less moisture inside your tires, meaning less corrosion on your wheels. You will not be able to feel any difference in the ride or handling or braking, unless your tire pressures were seriously out of spec and changing to nitrogen brought them back to the proper numbers.
#65
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Where's the reset button for TPMS light??
Hi everyone! I am new to this forum. I just picked up my 2015 Gx460 last month. The TPMS light stays on after I changed the snow tires. Can anyone tell me where the reset button for TPMS is located? I've searched the forum but couldn't find the answer. Thanks in advance!
#66
Have you checked the tire pressure after the installation?
There isn't a reset button. If the pressure is good, It sounds like they removed all of them or at least one of them when they replaced your tires. Was this done a reputable company?
I had a shop tell me that they sent a customers wheels and tires to Discount Tire and they removed the monitors and threw them away
I lost my spare tire due to my exhaust set up and could not get the trouble light to clear until I had the monitor installed in one of the wheels. I now have two monitors in one wheel.
There isn't a reset button. If the pressure is good, It sounds like they removed all of them or at least one of them when they replaced your tires. Was this done a reputable company?
I had a shop tell me that they sent a customers wheels and tires to Discount Tire and they removed the monitors and threw them away
I lost my spare tire due to my exhaust set up and could not get the trouble light to clear until I had the monitor installed in one of the wheels. I now have two monitors in one wheel.
#67
Lead Lap
Isn't there a monitor in the spare tire? There has to be a way to set the threshold for pressure. My GS had a button under the steering wheel. Checking the GX...that button doesn't seem to exist.
#68
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Have you checked the tire pressure after the installation?
There isn't a reset button. If the pressure is good, It sounds like they removed all of them or at least one of them when they replaced your tires. Was this done a reputable company?
I had a shop tell me that they sent a customers wheels and tires to Discount Tire and they removed the monitors and threw them away
I lost my spare tire due to my exhaust set up and could not get the trouble light to clear until I had the monitor installed in one of the wheels. I now have two monitors in one wheel.
There isn't a reset button. If the pressure is good, It sounds like they removed all of them or at least one of them when they replaced your tires. Was this done a reputable company?
I had a shop tell me that they sent a customers wheels and tires to Discount Tire and they removed the monitors and threw them away
I lost my spare tire due to my exhaust set up and could not get the trouble light to clear until I had the monitor installed in one of the wheels. I now have two monitors in one wheel.
#69
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Thanks for the reply. Yes, it looks like the new GX doesn't come with the TPMS reset button... I looked everywhere under the dash or steering wheel, no luck.....
#70
Lead Lap
If you have two sets of monitors, you will need to take it to the dealer to register the new numbers with your vehicle.
#71
If you have two sets of wheels, the GX only recognizes the five monitors that are programmed into the system.
This would require a reprogram every time you changed wheels, unless you transferred the monitors.
A duplicate set of monitors would be ideal, but I don't think that is an option?
#72
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BTW, did anyone try the ateq VT30? Does it work for the GX? If it works, it will save my time and money instead of going to the dealer twice a year for this issue...
#73
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Correct, with my understanding along with the frustrations that I encountered previously. The GX looks for five monitors and this is not adjustable.
If you have two sets of wheels, the GX only recognizes the five monitors that are programmed into the system.
This would require a reprogram every time you changed wheels, unless you transferred the monitors.
A duplicate set of monitors would be ideal, but I don't think that is an option?
If you have two sets of wheels, the GX only recognizes the five monitors that are programmed into the system.
This would require a reprogram every time you changed wheels, unless you transferred the monitors.
A duplicate set of monitors would be ideal, but I don't think that is an option?
#74
My 2006 didn't have a reset button, but there was a button under the steering wheel area with two positions - in or out. One position was for a regular tire set, the other for a secondary set so you could swap them out. Did they do away with this?
A common problem was if you hit the button by mistake, you got the low tire pressure signal and could go crazy trying to figure out why...
A common problem was if you hit the button by mistake, you got the low tire pressure signal and could go crazy trying to figure out why...
#75
I'm not sure of the model that was used in the attempt to clear out the spare tire monitor.
A hardwire connection was made to the main computer to clear all monitors. The mechanic went around to all four wheels with the wireless programmer and scaned them back into the system.
The trouble light came back on shortly after so apparently the GX must have five monitors (assuming the process was done correctly).
A hardwire connection was made to the main computer to clear all monitors. The mechanic went around to all four wheels with the wireless programmer and scaned them back into the system.
The trouble light came back on shortly after so apparently the GX must have five monitors (assuming the process was done correctly).