Help: Tire light

Old 03-03-2015, 08:05 AM
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ANMVQ
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Help: Tire light

I guys ,


Ok I'm not a ****, LOL but my TPS will not turn off? I checked it I had the dealer check it and there is 35 PSI is all 4 wheels they rest the light two days ago and it came right back on the next morning, I check the tires again last night and they still have 35 PSI in them. It original came on last week ( 9 Days ago) They were all at 32.5 I filled them to 35 and its never gone off since then? Total I have drive over 100 miles? Can I have a bad TPS? I thought it one was bad it would blink constantly? Thank you


BTW I use a digital pressure gauge and batt is brand new
Old 03-03-2015, 08:11 AM
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Vizard_87
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It's probably a bad tpms sensor? I've had mine on for over a year but I just installed new wheels/tires/tpms so it will be gone once i reset it
Old 03-03-2015, 08:21 AM
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Black Betty
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Perhaps you have a dying battery on one of the monitors. Discount Tire (and I'm sure many other shops) can check them. They also have non OEM replacements for $60.
Old 03-03-2015, 08:59 AM
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SwissCheeseHead
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I would go with dead battery as well.
Old 03-03-2015, 09:00 AM
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ANMVQ
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Thanx guys, I have to get them scanned checked then. Thank you,
Old 03-03-2015, 09:20 AM
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GAWD
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Nothing wrong with having a shop check, but if you have an air compressor and 10 minutes you can DIY reset / relearn the TPM system. Fruitless if you do have a dead sensor battery, but seems like it'd be a premature failure.

https://www.myg37.com/forums/d-i-y-i...-for-free.html

There are a lot of comments, but the process is pretty simple & strait forward.
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Old 03-03-2015, 11:21 AM
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connoisseurr
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Question for you, is the light illuminated solid, or does it flash for a while on vehicle startup then go solid?
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Old 03-03-2015, 12:54 PM
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G37Xtreme
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Could tpms sensors been engineered with some form of pendulum internally which would cause rotational energy to be converted to electrical via magnets and copper coils?

Kinda like an automatic (kinetic) wrist watch. Not the spring driven versions, the quartz versions.

The spinning of the tire, creates all the electricity needed to run the tpms. You'd probably need a small storage cell to keep a little juice to help regulate and deliver consistent power.
Old 03-03-2015, 01:05 PM
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jman09
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the dealer really couldn't help you???
Old 03-03-2015, 02:23 PM
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vqsmile
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Originally Posted by connoisseurr
Question for you, is the light illuminated solid, or does it flash for a while on vehicle startup then go solid?
^^ This

A battery issue will typically make the light blink only for the first 60 seconds or so, then remain solid.
Old 03-04-2015, 12:32 PM
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ANMVQ
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Originally Posted by connoisseurr
Question for you, is the light illuminated solid, or does it flash for a while on vehicle startup then go solid?

It blinks on start up then goes solid. The dealer reset it after rechecking the Tire pressure and the light came back on the next morning driving to work.
I have a compressor at home.
Old 03-04-2015, 12:41 PM
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vqsmile
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Originally Posted by ANMVQ
It blinks on start up then goes solid. The dealer reset it after rechecking the Tire pressure and the light came back on the next morning driving to work.
I have a compressor at home.
If it's not still just a battery then ...

since you're located in Mass, make sure your tire pressure is set to the correct pressure in the morning while it is still completely cold BEFORE you drive it. It is possible that it is cold enough there that the pressure dropped significantly overnight (due to cooling) after the dealer had filled it to spec.
Old 03-04-2015, 12:44 PM
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Rochester
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Originally Posted by connoisseurr
Question for you, is the light illuminated solid, or does it flash for a while on vehicle startup then go solid?
That's the exact behavior you get if any of your TPMS aren't registered with the ECU.

For example, let's say someone were too lazy to get their winter wheels scanned last December... Umm. Yeah.

ANMVQ, it's probably the battery in one of the sensors. As to *which* one, the only way you can find that out (I think) is to get them all re-scanned. Maybe you should ask a reputable tire shop about this, and not so much the dealership. I believe there are more than one sensor calibration tools out there, with different iterations of various models. In other words, for this particular issue I'd be more inclined to trust a good tire shop than the dealership.
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Old 03-04-2015, 03:18 PM
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ANMVQ
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Originally Posted by vqsmile
If it's not still just a battery then ...

since you're located in Mass, make sure your tire pressure is set to the correct pressure in the morning while it is still completely cold BEFORE you drive it. It is possible that it is cold enough there that the pressure dropped significantly overnight (due to cooling) after the dealer had filled it to spec.


Thanx man, I have checked it hot ,cold LOL its still with in the proper range setting. I will have a tire shop check it out
Old 03-04-2015, 03:18 PM
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quakerroatmeal
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I vote for bad TPMS as well. Happened to me after DT put on new tires. They replaced the broken TPMS on the house.
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