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LOW tire pressure warning....
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08-03-2010, 02:04 PM
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#1
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Registered User
Join Date: Dec 2009
Location: SW WA
Posts: 946
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LOW tire pressure warning....
Was traveling the WA / OR "gorge" this weekend when decided after a concert to head up to Goldendale Observatory and see the stars...The Observatory is up a bit of elevation and was maybe 10~ish degrees cooler (about 60'F vice 70' down in the Dalles). Got up to there and low tire pressure lite came on just as I parked after an hour ride up. Restarted engine after an hour and still got the LP lite, visual check of all 5 tires was fine, drove down and lite was off after about 30~ mins and didn't reappear. Got home and rechecked tires w/ accurate gauge and All 5 were still @ 35.5-36.0 lbs at 70'F (cold after overnight) ...just the same pressures as I started trip.
Wasn't pressed against any curbs, potholes etc., and the ride was fine too. No visual problems after checking today
thoughts of this gremlin? 
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JeffinWesternWA
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08-03-2010, 02:12 PM
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#2
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Plasti Dip yourself!
Join Date: Mar 2009
Location: 6,000 ft, Colorado
Posts: 3,616
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Probably had a tire that dropped below the pressure threshold from the cooler air. If I remember right the sensors trip below 37PSI. I wouldn't worry about it.
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08-03-2010, 02:16 PM
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#3
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Registered User
Join Date: Dec 2009
Location: SW WA
Posts: 946
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pressure recommended on the JK Sport IS 35 lbs COLD so I imagine the sensor/lite is set lower, maybe around high 20's perhaps(?) and a 10'F temp change and some altitude shouldn't set it in the description I gave but, that "in combo" was my thought of why. Wasn't worried as much as curious....street driving I find that 36-37 lbs is wearing tires nice/good mpg but ride doesn't justify any more pressure over 37~...
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JeffinWesternWA
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08-03-2010, 02:22 PM
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#4
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Make mine a Jeep!
Join Date: Jul 2007
Location: Henderson, Nevada
Posts: 9,923
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I had my sensor go of a couple of times for no apparent reason. It was very hot out at the time. One time it was on for two days. Of course I checked the tire pressure and everything was fine. I just mark it as a glitch. I still think it’s a very good system to have. I like it.
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08-03-2010, 02:43 PM
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#5
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Registered User
Join Date: Jan 2010
Location: Dubuque
Posts: 847
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10* outside temp shouldn't make a difference. I would just keep an eye on the pressures and if you don't see the light again in the next month or so, just forget it.
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08-03-2010, 02:48 PM
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#6
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Registered User
Join Date: Oct 2008
Location: NORCAL/NORNV
Posts: 3,044
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 I'm afraid the sys is a PITA
I just set mine to "0", so now I get NO chimes and NO lights
I set it because I've got wheels on, with no xmitters inem !!
 JIMBO
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08-03-2010, 03:00 PM
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#7
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Registered User
Join Date: Apr 2010
Location: Texas
Posts: 307
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My low pressure light came on this morning. Had all my tires at about 32-33psi, one was actually at about 31psi. I went ahead and bumped all of them up to 35psi and drove home from work, about 30 miles, with no problems with the light any longer.
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08-03-2010, 03:10 PM
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#8
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Web Wheeler
Join Date: Jan 2009
Location: Charlottesville VA
Posts: 1,701
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I keep mine at 37psi hot, and my OEM TPMS is set at 35.
During the winter, -10 to 10*F, they can come on when it sits overnight, but driving it for a few minutes sends the light away.
(there's also the air compressor option)
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08-03-2010, 04:41 PM
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#9
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Registered User
Join Date: Apr 2007
Location: Vancouver, WA
Posts: 468
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Mine has come on 5-6 times and it's never been because the pressure was low. I carry a guage and check each time but haven't had anything other than a false reading yet.
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08-03-2010, 05:05 PM
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#10
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Registered User
Join Date: Dec 2009
Location: SW WA
Posts: 946
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Is the "Warning pressure lite" adjustable to the temp it comes on? (w/o a programmer?)
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JeffinWesternWA
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08-03-2010, 05:15 PM
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#11
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Registered User
Join Date: Oct 2008
Location: NORCAL/NORNV
Posts: 3,044
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 --The TPMS sys. doesn't measure temperature, it's based on tire air pressure !
Quote:
Originally Posted by JeffinWesternWA
Is the "Warning pressure lite" adjustable to the temp it comes on? (w/o a programmer?)
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It's not adjustable--without an external chip
 JIMBO
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08-03-2010, 05:37 PM
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#12
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Registered User
Join Date: Dec 2009
Location: SW WA
Posts: 946
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yep, meant pressure, typed 'temp', i'm 50, excusable... 
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JeffinWesternWA
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08-03-2010, 05:42 PM
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#13
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Registered User
Join Date: Oct 2008
Location: NORCAL/NORNV
Posts: 3,044
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 Heh Heh, well you're kinda right anyway, the higher the temp--the higher the air pressure and vicey/versey !!
Quote:
Originally Posted by JeffinWesternWA
yep, meant pressure, typed 'temp', i'm 50, excusable... |
 JIMBO
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08-03-2010, 05:43 PM
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#14
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Registered User
Join Date: Dec 2009
Location: SW WA
Posts: 946
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Quote:
Originally Posted by JIMBOX
--The TPMS sys. doesn't measure temperature, it's based on tire air pressure !
It's not adjustable--without an external chip
JIMBO |
Ya don't "change a chip"... just a reflash of the eprom....but, that's what ya meant 
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JeffinWesternWA
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08-03-2010, 05:47 PM
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#15
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Registered User
Join Date: Oct 2008
Location: NORCAL/NORNV
Posts: 3,044
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Well, call it what you want, my chip is an AEV Procal !!
Quote:
Originally Posted by JeffinWesternWA
Ya don't "change a chip"... just a reflash of the eprom....but, that's what ya meant |
JIMBO
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