TPMS Adjustment
Thread Starter
Pole Position
Joined: Jun 2014
Posts: 2,650
Likes: 554
From: AR
TPMS Adjustment
One of my TPMS's always shows up 1 PSI pound higher than the other 3 TPMS on the ground. I check them with the same digital gauge. They all show the same on the gauge but the left rear always shows 1 pound higher on the dash display. Is there any type of adjustment for our TPMS's
Dennis
Dennis
CL Community Team
Joined: Apr 2008
Posts: 2,221
Likes: 310
From: TX
Dennis,
While it is possible that one of your TPMS tire sensors is 1 PSI different, that is unlikely. Some digital gauges have only 1 PSI resolution, so if you are using that sort of gauge then that is a 1 PSI uncertainty and the car only displays 1 PSI resolution and maybe the sensors only quantify 1 PSI resolution - not sure about that - then it is easy to account for the 1 PSI difference. If you are using a digital gauge with 0.1 PSI resolution then try testing with a pressure that is 0.5 PSI higher or lower. You might have better luck convincing yourself if you use a dial type gauge with a bleeder valve to set your tires to the "same" pressure as that would remove some of the uncertainty, some of the time.
There is no calibration or adjustment in the TPMS.
While that sort of difference is irritating to people like me and you, it doesn't compromise the enhanced safety that the TPMS is designed to provide.
While it is possible that one of your TPMS tire sensors is 1 PSI different, that is unlikely. Some digital gauges have only 1 PSI resolution, so if you are using that sort of gauge then that is a 1 PSI uncertainty and the car only displays 1 PSI resolution and maybe the sensors only quantify 1 PSI resolution - not sure about that - then it is easy to account for the 1 PSI difference. If you are using a digital gauge with 0.1 PSI resolution then try testing with a pressure that is 0.5 PSI higher or lower. You might have better luck convincing yourself if you use a dial type gauge with a bleeder valve to set your tires to the "same" pressure as that would remove some of the uncertainty, some of the time.
There is no calibration or adjustment in the TPMS.
While that sort of difference is irritating to people like me and you, it doesn't compromise the enhanced safety that the TPMS is designed to provide.
CL Community Team
Joined: Apr 2008
Posts: 2,221
Likes: 310
From: TX
Forget about the accuracy and go for the resolution. If you have a dial gauge with a bleeder valve, use that one. And make two sets of measurements that are 0.5 PSI apart - set the pressure to 33.0 PSI on all tires and then set the pressure to 33.5 PSI.
CL Community Team
Joined: Apr 2008
Posts: 2,221
Likes: 310
From: TX
Here's one that has accuracy, resolution and a bleeder: http://moroso.com/eb/catalog/navigat...nuId=main.menu
A better solution might be a trip to the Crystal Bridges Museum to get your mind on something else.
It's so hot and dry here I can't think of anything pleasant.
A better solution might be a trip to the Crystal Bridges Museum to get your mind on something else.
It's so hot and dry here I can't think of anything pleasant.
Thread Starter
Pole Position
Joined: Jun 2014
Posts: 2,650
Likes: 554
From: AR
Been there 5 times already. If you have never been, it is really worth the time. It's like when we were stationed in DC. Every time friends/family came to visit it was I want to go see? I could do the sites in my sleep.
Dennis
PS: not dropping $80 for 1 psi.
Dennis
PS: not dropping $80 for 1 psi.
Last edited by DJWLDW; Jul 24, 2015 at 05:59 PM.
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Racer
Joined: Aug 2014
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From: TX
1 PSI shouldn't make that big of a difference for most of us. If your tire pressure is too low or too high the sensor will give a warning. I had my tires rotated, balanced, pressure checked at the dealer and the pressure varies 1 or 2 PSI per tire after I drive my car.
Pole Position
Joined: May 2008
Posts: 2,210
Likes: 348
From: Tennessee
It's so hot here in Memphis, I am melting!
As for tire pressure, unless you think you are having some sort of leak, I'd certainly leave it alone. Shortly after I got my car, the tire sensor went off. Took it to the dealership, had nitrogen installed and it's been fine ever since. Does the nitrogen make a difference? I couldn't tell you. But the sensor has not alarmed since (Of course now that I've jinxed myself, today when I get in my car . . . . . . )
As for tire pressure, unless you think you are having some sort of leak, I'd certainly leave it alone. Shortly after I got my car, the tire sensor went off. Took it to the dealership, had nitrogen installed and it's been fine ever since. Does the nitrogen make a difference? I couldn't tell you. But the sensor has not alarmed since (Of course now that I've jinxed myself, today when I get in my car . . . . . .
)
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