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Unread 02-08-2011, 06:02 PM   #1
georgemanfra
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2010 JK Wrangler 
 
Join Date: Sep 2010
Posts: 5
Low Tire Pressure

Hello All! I'm new to this forum, and here's my first post. I have a 2010 Jeep Wrangler Unlimited. My Low Tire Pressure warning light recently came on. My tires' stated maximum air pressure is 35 lbs. (these are the stock tires that came with the Jeep). I checked my pressures and found them all to be hovering around 30 lbs., so I increased them to 32 lbs. Still the warning light stayed on. I called my dealer's service department and asked his advice. He stated I need to fill the tires to 37 lbs. I'm in New England and we're buried in cold snow. I'm leary of inflating my tires over their maximum limits. Any thoughts out there? Thanks in advance.

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Unread 02-08-2011, 06:11 PM   #2
Blu-Jacket
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2009 JK Wrangler 
 
Join Date: Jul 2005
Location: Columbus, Ohio
Posts: 580
What does it say for tire pressure inside your left door jamb? That is the pressure you need to set them at. Otherwise, you will not satisfy the TPMS and the light will not clear. Also, once you do get them inflated, it's not uncommon that the light won't extinguish until you drive a few miles.
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Unread 02-08-2011, 06:46 PM   #3
Vin
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2012 JK Wrangler 
 
Join Date: May 2010
Location: Long Island, New York
Posts: 3,473
Fill them to 37-40 psi. After the light turns off you can air down to a more comfortable pressure.
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Unread 02-08-2011, 07:20 PM   #4
jabsther
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2010 JK Wrangler 
 
Join Date: Jan 2008
Location: Cape Cod, MA
Posts: 388
Dont forget about the spare tire pressure also will affect the TPMS.
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Unread 02-08-2011, 07:58 PM   #5
paul84043
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2012 JK Wrangler 
 
Join Date: Oct 2010
Posts: 2,591
When the air gets cold, the pressure drops and the sensors come on. Ther'es a bit of hysteresis built in so you have to overshoot the setpoint and then you can come back down to what it's supposed to be.
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Unread 02-09-2011, 06:52 AM   #6
georgemanfra
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2010 JK Wrangler 
 
Join Date: Sep 2010
Posts: 5
Low Tire Pressure

Thank-you to everyone who replied. I always judged tire pressure levels by just what it said on the tire, but I'll now check what the door jamb tag says since they're the stock tires. Didn't know that there was a way for the Jeep to know what the spare tire pressure was. i didn't check that pressure since I have a locked spare tire cover on it and it was very cold at the time. Just too lazy to unlock and remove it. Thanks again everyone!
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Unread 02-09-2011, 07:33 AM   #7
JIMBOX
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2008 JK Wrangler 
 
Join Date: Oct 2008
Location: NORCAL/NORNV
Posts: 4,444
Gettan AEV Procal Module-

Then you can change tires/set any pressure/correct speedo-a whole buncha things-

JIMBO
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Unread 02-09-2011, 01:59 PM   #8
jrmandryck
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2008 JK Wrangler 
 
Join Date: Dec 2010
Location: , Maine
Posts: 1,386
I turned mine down to 0psi because in Maine now with the temp change of 40* it goes off almost every morning
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