This is the first car I have owned that has a Tire Pressure Monitoring Systems (TPMS). There are tire pressure sensors installed on each wheel that send tire pressure data by radio signal to a receiver unit in the vehicle. Mine is indicating a problem via warning light already, but the tires are brand new and perfectly inflated. Anyone else have such a monitoring system? Impressions?
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Re: Tire Pressure Monitoring Systems
The most common issues I've seen in my work (I'm a Mitsubishi Mechanic) is that if the weather was cold overnight, the pressure drops below threshold, and takes a little bit of driving to come up to pressure. If 1 tire is too far from the other tires pressures (even if it's above the low threshold, it will set it off. Also note, that some vehicles with a full size spare have a monitor on it as well, and it's possible that it's causing the alarm to fire.
so, if ALL your tires are set perfectly to the manufactures specifications (found on the tire sticker inside the door jam) then I would proceed to drive for a little while to give it time to run a system check (usually it's instant, but, on occasion I've seen it take a few minutes)
If all this results in nothing, you would have to have a scan-tool hooked up to the car to verify what the system is seeing, and to diagnose a possible sensor error.
Final note: it my experience, while tire monitors have helped in some situations, for people who allready monitored their tires and what not, they can prove to be something of a nusance, and be just one more thing on a car to break.
You do what you want in your association, don't let others ruin the fun. Just because other people say it's cheap doesn't mean you have to let it affect your association, just have fun - Evan_OS -
Re: Tire Pressure Monitoring Systems
Yep, if its extremely cold, they can screw up. I have a TPMS system and it did this to me as well (even with nitrous in the tires). So don't be worried if it is extremely cold, otherwise I would check them manually.Comment
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Re: Tire Pressure Monitoring Systems
The tires were under inflated from the start. Pretty much got 25 PSI readings on all four, but the correct inflation level was 32 PSI (44 PSI MAX). Got all of them up to 34 PSI and the warning light went off.Comment
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Re: Tire Pressure Monitoring Systems
I have a 4Runner and it also measures the PSi on the spare tire underneath the car. My low tire pressure light was on for quite a while and all my tires were inflated properly (I thought). It turns out the spare tire was the one that was low and causing the light to come on. Just fyi.Comment
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Re: Tire Pressure Monitoring Systems
I just had this problem with a year old Xterra.
I recently had a 4 in metal piece stuck in one of my tires and had to replace it. So about a few months later, I get the warning light. I'm thinking they busted the pressure system when putting in the new tire.
I take to the place they find nothing wrong but one of my tires was down a little bit.
Here's what you need to do. On your car, maybe driver's side door frame, there should be a white sticker showing factory recommendations for tire pressure. Find a tire gauge and check each one. And fill the tires to factory specs, then drive your call around, that should reset the gauge. If it doesn't you need to take your car in to a tire place or dealership.
Does your car tell you what tire is having the problem?
My Xterra didn't so that's what threw me off. On mine I could not see a flat, so I thought I had a slow leak or a busted sensor. But it seems the sensors are pretty sensitive and will come on even if a bit of pressure is lost, no just showing that you have a flat.Comment
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Re: Tire Pressure Monitoring Systems
You missed my "solving" post. I did all that, especially making sure that the "side door info" and the tires on my car matched. Once I got the pressure up to snuff the warning light went off. As far as the warning light telling which specific tire is low, it does not-only a tire with an exclamation point inside it.
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