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Old 12-11-2011, 03:54 PM   #1
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low tire pressure indicated on, but all tures are good

went offroading this weekend. aired down to 20psi, then when I was done, aired back up to the 37psi as per the door sticker. though 2 days later the low pressure light is still on.

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Old 12-11-2011, 04:46 PM   #2
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Try leting 5 pounds or so out then airing up to around 42/45 psi then going back down to 37. I had one rim that I had to do that to everytime I aired down. (I didnt put them in my new rims becouse of this)

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Old 12-11-2011, 05:14 PM   #3
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AEV Procal

Never have to worry about TPMS again
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Old 12-11-2011, 06:59 PM   #4
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When I first got my Rubicon, the tpms light went on after the first drop in temp. I need to fill my tire to 40 psi and drive for a bit until they turned off. Then I aired down to 36 psi. (I use higher psi for fuel economy on road)
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Old 12-11-2011, 07:11 PM   #5
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The TPMS sensor is a wonderful thing.

Threads since the start of November (and I'm sure I missed a few):

Tpms help!!
Low tire pressure warning?
Tire air pressure sensor
Faulty Tire Pressure Idiot Light?
TPMS Indicator issue with NO TPMS installed
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Old 12-11-2011, 07:14 PM   #6
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Quote:
Originally Posted by kbwwolf
The TPMS sensor is a wonderful thing.

Threads since the start of November (and I'm sure I missed a few):

Tpms help!!
Low tire pressure warning?
Tire air pressure sensor
Faulty Tire Pressure Idiot Light?
TPMS Indicator issue with NO TPMS installed
Missed some
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Old 12-11-2011, 07:22 PM   #7
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Missed some
lol...I'll bet!
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Old 12-11-2011, 07:26 PM   #8
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Quote:
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lol...I'll bet!
Just a few. Let you of this time buddy
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Old 12-12-2011, 07:17 AM   #9
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i know on some vehicles, if you don't keep the spare up to spec, it will show up on the dash. also, may have to drive awhile before the tpms resets itself.
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Old 12-12-2011, 09:43 AM   #10
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Getta AEV Procal Module (AEVPM)-solve ALL problems-

kbwwolf, sure wish they sold an AEVPM, for the TPMS subject on this forum

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Old 12-12-2011, 09:48 AM   #11
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Quote:
Originally Posted by Pomz623 View Post
went offroading this weekend. aired down to 20psi, then when I was done, aired back up to the 37psi as per the door sticker. though 2 days later the low pressure light is still on.
I had this same problem the first two times I went wheeling. first time, the bead had come loose enough while offroading to fill the wheel with mud (and a week later after it rained the tire wound up going flat) and the second time the bead had simply come loose, not enough to go flat, but i found myself having to air up every week as i was losing 5 pounds or so of air slowly. Bring the jeep to a tire shop, explain whats up (essentially if you cant narrow it down to a single tire, you want them to reseat all of them) and you should be good to go
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Old 12-12-2011, 01:23 PM   #12
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Getta AEV Procal Module (AEVPM)-solve ALL problems-

kbwwolf, sure wish they sold an AEVPM, for the TPMS subject on this forum

JIMBO

Absolutely!

And maybe one for leaks, too.
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Old 12-12-2011, 01:27 PM   #13
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Heh Heh--BINGO-


Quote:
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Absolutely!

And maybe one for leaks, too.
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Old 12-12-2011, 01:37 PM   #14
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I am still on the fence about the sensor. They can be a pain but they have save me a few times too. I would have never known I had a very small leak from a nail a few months back if not for the sensor. So I was able to get it fixed before the problem got to a flat. And being over the weekend, it really paid off. And on my car (not my Jeep), had a similar experience a couple years ago. But then again, I do have road side service.

Still debating whether to transfer them to the new wheels or not
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Old 12-12-2011, 01:40 PM   #15
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Check the spare
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Old 12-12-2011, 01:58 PM   #16
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Absolutely!

And maybe one for leaks, too.
Or one that solves the problem of whether or not to get a manual or automatic?

www.autovsmanualwrangler.info

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Old 12-12-2011, 02:24 PM   #17
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Most tire pressure gauges are made in China these days, so it might be 5 psi off (or not). The system does not read the spare. Your dealer has a device that reads each tire, although that service will probably cost you about $95.

I generally like the TPMS system - although it is sort of like the seat belt idiot chime - good for your wife/daughter - not so much for you. LOL

I got the warning light on both their JKU's, 3 times total. Once was change of seasons as the pressure dropped - the other was a leaky tire/wheell - since replaced with new tires. So it was spot on - I'm not sure they would have noticed until a tire bulged at 10 psi.

I bought a set(5) of take off Rubicon MT's for winter driving to replace the sport tires. No TPMS on them. I bought the sensors (4/$110) and installed them, worth the $$ IMHO.

Yes, you can disable it with ProCal, but I'd rather know that a tire is at 20-25psi, not so easy to tell with life's happenings - don't mind a reminder light.
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Old 12-12-2011, 04:54 PM   #18
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well my light is still on, i would unplug the battery, but it messes with radio settings. Is there a fuse i can pull that will reset the sensors but not the radio? I dont need the procal, because the cost of it is not worth just to reset the alarm.
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Old 12-13-2011, 08:29 AM   #19
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re: "The system does not read the spare. "

It reads on my JK 08. In fact, it took a couple days messing around to discover it was the spare that was low. Airing it up made the warning system happy again.
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Old 12-13-2011, 08:40 AM   #20
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Quote:
Originally Posted by JeeperJake View Post
re: "The system does not read the spare. "

It reads on my JK 08. In fact, it took a couple days messing around to discover it was the spare that was low. Airing it up made the warning system happy again.
A tire pressure monitoring sensor is located in the spare
wheel if the vehicle is equipped with a matching full size
spare wheel and tire assembly. The matching full size spare
tire can be used in place of any of the four road tires. A low
spare tire will not cause the “Tire Pressure Monitoring
Telltale Light” to illuminate or the chime to sound.
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Old 12-13-2011, 08:44 AM   #21
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I believe a tire that isn't rotating won't be included in the TPMS readings. Could be wrong...


EDIT: Oops, missed post above. Sorry, Daggo.
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Old 12-13-2011, 08:45 AM   #22
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The sensors can become damaged, in which case you will get a slightly different type of warning. I also learned, the hard way, that they have batteries that wear down. If you air down to off road often, the batteries wear out quicker. Great system for on road vehicles, not so great for off.

The “Tire Pressure Monitoring Telltale Light” will flash
on and off for 75 seconds, and will remain on solid when
a system fault is detected. The system fault will also
sound a chime. If the ignition key is cycled, this sequence
will repeat, providing the system fault still exists. A
system fault can occur by any of the following scenarios:
1. Jamming due to electronic devices or driving next to
facilities emitting the same Radio Frequencies as the TPM
sensors.
2. Installing some form of aftermarket window tinting
that affects radio wave signals.
3. Lots of snow or ice around the wheels or wheel
housings.
4. Using tire chains on the vehicle.
5. Using wheels/tires not equipped with TPM sensors.

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