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Old 11-26-2011, 10:45 AM   #1 (permalink)
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Default Tire Pressure Light Came On....

It was cold this morning, about 34 degrees F. I get in my car and notice that TPMS light. Its still dark, and I'm running late to work, so I just walk around and do a cursory glance at all my tires with my lighter, they don't seem to be low. So I think maybe its because of the cold, but the light never came off after my 25 minute commute to work. I get out of my car, look around the tires, they look okay. I'll check the pressure after I get out of work.

Any ideas?
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Old 11-26-2011, 10:51 AM   #2 (permalink)
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TPMS sensors are very sensitive. Check your pressures and adjust as necessary. Glad I don;t have them on my car.
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Old 11-26-2011, 11:24 AM   #3 (permalink)
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It's not unusual for this to happen with the first big cold snap. As advised, simply check the pressure and adjust to the level provided on the sticker inside driver's door jamb.
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Old 11-26-2011, 12:33 PM   #4 (permalink)
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Tire pressures will drop 1PSI for every ten degrees in ambient air temperature. That is also a flexible formula depending upon sea level, but the 1-for-10 is the easiest to remember. So pretty much if you bought your car in the summer they were filled at 70degrees+ and now its 30 so you could have dropped as much as 4-5PSI in each tire. I just checked mine the past 29degree day we had and all were at 27-29PSI recommended is 32PSI (in my GLS). Check them all with a gauge and fill to the appropriate PSI. The light will go off right away. You do not need to drive it for the system to reset itself like on some cars (i.e. Chryslers).
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Old 11-26-2011, 12:54 PM   #5 (permalink)
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Quote:
Originally Posted by IronmanRB201257 View Post
Tire pressures will drop 1PSI for every ten degrees in ambient air temperature. That is also a flexible formula depending upon sea level, but the 1-for-10 is the easiest to remember. So pretty much if you bought your car in the summer they were filled at 70degrees+ and now its 30 so you could have dropped as much as 4-5PSI in each tire. I just checked mine the past 29degree day we had and all were at 27-29PSI recommended is 32PSI (in my GLS). Check them all with a gauge and fill to the appropriate PSI. The light will go off right away. You do not need to drive it for the system to reset itself like on some cars (i.e. Chryslers).
So, be sure to change out the summer air and put in winter air....
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Old 11-26-2011, 08:09 PM   #6 (permalink)
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Take out summer air and put in winter air lol! Awesome! Thanks for the advice guys! Yeah, this morning was about 34 degrees, the coldest its been! After work I stopped by a gas station and checked all the tires and they were all sitting at about 29-31 psi, the front left was a little lower! I filled them all up to 32 and the light went off right away! Whewwww! I hate indicator lights!
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Old 08-17-2012, 11:13 AM   #7 (permalink)
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My TPMS light is solidly on. I figured this was due to a front that came through my area yesterday and the temp dropped about 10-15 degrees. However, the light has remained on. I checked all my tires and they are at spec pressure (32 psi). I brought the tires up to 34psi and the light is still on. I double checked the pressure with my stick and the one at the gas station.


Suggestions?
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Old 08-17-2012, 11:57 AM   #8 (permalink)
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If TPMS light stays on and pressure checks show the tires are within range, then the TPMS needs servicing...

I think the TPMS will turn on if the pressure gets below 25psi. Had mine go off long time ago and my front left tire had 23 psi of air in it.
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Old 08-17-2012, 11:59 AM   #9 (permalink)
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If TPMS light stays on and pressure checks show the tires are within range, then the TPMS needs servicing...

I think the TPMS will turn on if the pressure gets below 25psi. Had mine go off long time ago and my front left tire had 23 psi of air in it.
I have 8k miles and my car is 8 months old. Sigh, time to call the dealership.
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Old 10-08-2012, 01:25 PM   #10 (permalink)
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This happened to me this morning (I live in Washington, DC), temps were in the 70's, and then dropped to the 50's yesterday.

I bought my car in January, had one oil change so far (I haven't driven it far/much), and I figure as part of any oil change that the dealer (I did go to a Hyundai dealer) would add air to the tires.
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