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Old 10-11-2009, 10:04 AM   #1
Noah
 
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Tire Pressure Monitoring System

Last night I got a low pressure light in my back left tire. So I went to the compressor and filled up all the tires to about 40psi. Then I went to the tire monitor system screen and the gauge still read odd low numbers like 33 36 34 35. And my trusty handheld gauge said 40-41 in all tires. So I clicked the reset button, the horn honked 3 times and scared the hell outta me, then the screen went blank and said "Service Tire Pressure Monitoring System" with a big wrench. Anybody else had this problem?
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Old 10-11-2009, 10:09 AM   #2
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Quote:
Originally Posted by Noah View Post
Last night I got a low pressure light in my back left tire. So I went to the compressor and filled up all the tires to about 40psi. Then I went to the tire monitor system screen and the gauge still read odd low numbers like 33 36 34 35. And my trusty handheld gauge said 40-41 in all tires. So I clicked the reset button, the horn honked 3 times and scared the hell outta me, then the screen went blank and said "Service Tire Pressure Monitoring System" with a big wrench. Anybody else had this problem?
You need to reprogram your TPMS now. Go back and hit the reset button again then you will need to start with the front left tire and depress the valve stem to let air out until you hear the horn blow. Once you hear the horn blow go to the front right and do the same thing, then right rear and finally the left rear. Don't ask me how I know.
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Old 10-11-2009, 10:10 AM   #3
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From the owners manual.

Reset the tire learn mode. Each tire will have to have air added or removed until the horn beeps, the horn beeping means that the air pressure sensor has learned that tires pressure.

Just did it yesterday, had to read the book.

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Old 10-11-2009, 10:20 AM   #4
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Well now when I press the reset button nothing happens. It is just a screen with a car and "--" by each tire.
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Old 10-11-2009, 10:33 AM   #5
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I've got three vehicles with tire pressure sensors. When temperatures drop in the fall, mine will all say low pressure. I will air them up to the correct pressure, but the monitor still shows low pressure until the tire monitor system resets itself after a few miles.

None of the cars has reset just sitting there, immediately after correcting the pressure. I don't know if the system resets because of the the time involved (so many minutes), or after distance (so many miles). But I have never needed to "relearn" the sensors with the computer.

I like them, they have found a few slow leaks from an embedded object. I just wish I could program the pressure range for them to work in.
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Old 10-11-2009, 10:42 AM   #6
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Mine's done that like 4 time already, once it was the tire sensor, another time it was the valve stem, and two other times they just reprogrammed them.
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Old 10-11-2009, 10:47 AM   #7
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u put 40 i only put 35 in
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Old 10-11-2009, 11:49 AM   #8
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max is 35psi,i personally air them to 32psi cold and then when the tire heats up im at 35psi,thats how i roll
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Old 10-11-2009, 12:34 PM   #9
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...IMO is stupid/annoying. I routinely inspect my tires, manually check the pressure, and add air as needed. Never had a problem with this method. I really don't understand why a Camaro has to have the same features as a Cadillac.
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Old 10-11-2009, 12:43 PM   #10
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Tires should be filled to 36 psi cold and will usually heat up to 40 in summer, 37-38 in rain and 37 after a 20 mile 40 degree day drive. Maybe 34 cold in the summer, but not in the winter. You are killing the treadwear and rolling resistance.

I wouldn't recommend 32 psi cold with these tires, especially this time of year. JMO

My tires were topped off a few weeks ago with 1-2 psi each when the temps dropped.
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Old 10-11-2009, 12:57 PM   #11
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so 36 psi it is? Im just going to take it to the dealership to get the light off my dash and fix whatevers wrong. Not going to play with that system again lol
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Old 10-11-2009, 01:22 PM   #12
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Quote:
Originally Posted by MikesZ View Post
...IMO is stupid/annoying. I routinely inspect my tires, manually check the pressure, and add air as needed. Never had a problem with this method. I really don't understand why a Camaro has to have the same features as a Cadillac.
As I understand all vehicles will have to have TPMS in the future as mandated by the government, part of the TREAD act of 2000 (Explorer rollovers were a contributor to this)

Last edited by HOCOPO; 10-11-2009 at 01:28 PM. Reason: sp.
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Old 10-11-2009, 01:38 PM   #13
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Over inflating your tires will just wear out the middle of the tread first, ride harder, and have less grip than one properly inflated.

I believe the pressure recommendations given on the door post are for "loaded" vehicles.
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Old 10-11-2009, 01:42 PM   #14
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As I understand all vehicles will have to have TPMS in the future as mandated by the government, part of the TREAD act of 2000 (Explorer rollovers were a contributor to this)
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