TPMS Failure Mode

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wjburken

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Lots of posts here on TPMS sensors, but can’t find one that deals with my issue, I think.

Wife’s 2013 Yukon says the front PS tire is at 28 psi. When I put two different analog pressure gauges, it reads 40 psi. The other three read correctly and respond. Would this be a bad battery? Normally I get no reading when a battery goes out, not a wrong reading.
 

wsteele

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I replaced my TPMS’ a couple years ago. It was winter and they just started dropping out. I relearned a few of them and they lasted a few more months then finally when trying the relearn, no response. I haven’t had any rogue reporters.
 

Rocket Man

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Not sure I’ve heard of one reading low. What happens when you increase or decrease pressure? Might try deleting it and doing a relearn.
 

iamdub

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Either way, you're gonna have to break the tire bead to access it. If I'm that far in, I'm replacing it. Unless they've been replaced, the others are just as aged and are likely to start dropping dead soon.
 
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wjburken

wjburken

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Everything seems to be working fine now. Hope it lasts so I can deal with it when it’s warmer out.
 

kbuskill

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That’s what I’m thinking. The vehicle is 8 years old and I’m pretty sure these are original sensors.

I had one of mine do this recently.

Back story...

I got new tires put in my wheels, sensors were all fine beforehand.

When they installed my new tires the "tech" that did them was a new guy and he inflated all of my tires to 80psi. The tires are supposed to have 55 psi max.

After I left the tire place and started driving my TPMS light went off on the dash. I flipped to the screen on my HU to see all of my tire pressures on the same screen. Three of them read 80psi and one read 29psi.

I turned around and went back. Turns out all of them were at 80psi but the one sensor never changed from 29psi.

I assumed that the sensor was damaged from over inflation but I can't be sure since the others still read fine. I bought a new sensor (Amazon) and had the shop install it free of charge since they over inflated all the tires.

Not sure if this applies to your situation but it is kind of funny that mine and yours were stuck at almost the same psi (28-29).
 

89Suburban

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I had one of mine do this recently.

Back story...

I got new tires put in my wheels, sensors were all fine beforehand.

When they installed my new tires the "tech" that did them was a new guy and he inflated all of my tires to 80psi. The tires are supposed to have 55 psi max.

After I left the tire place and started driving my TPMS light went off on the dash. I flipped to the screen on my HU to see all of my tire pressures on the same screen. Three of them read 80psi and one read 29psi.

I turned around and went back. Turns out all of them were at 80psi but the one sensor never changed from 29psi.

I assumed that the sensor was damaged from over inflation but I can't be sure since the others still read fine. I bought a new sensor (Amazon) and had the shop install it free of charge since they over inflated all the tires.

Not sure if this applies to your situation but it is kind of funny that mine and yours were stuck at almost the same psi (28-29).


Jesus Christ that's a scary story, that ******* idiot used to airing up semi truck tires? Man I would have raised holy hell. Tell them you want new tires since they overinflated them that much, damn...
 

kbuskill

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Jesus Christ that's a scary story, that ******* idiot used to airing up semi truck tires? Man I would have raised holy hell. Tell them you want new tires since they overinflated them that much, damn...

Thank God for the TPMS. If it hadn't went off to alert me I would have just went on my way and after driving it for any length of time on the interstate the pressure would have increased even further and potentially blown out a tire or two possibly leading to an accident.

I am pretty level headed, especially as I get older, and don't allow things to fluster me that once would have.

I figured if Michelin says 55 psi max then they have probably been tested to well above that and everybody makes mistakes once in a while.
 

89Suburban

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Thank God for the TPMS. If it hadn't went off to alert me I would have just went on my way and after driving it for any length of time on the interstate the pressure would have increased even further and potentially blown out a tire or two possibly leading to an accident.

I am pretty level headed, especially as I get older, and don't allow things to fluster me that once would have.

I hear ya man. Yeah I am itching to get mine replaced soon. None of mine work. Any suggestions for a complete ne set?
 

kbuskill

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I hear ya man. Yeah I am itching to get mine replaced soon. None of mine work. Any suggestions for a complete ne set?

Like Mark @Rocket Man said, get a good OEM (Delco) set and forget about it.

There are definitely cheaper alternatives out there but if you get a good quality set you won't have to worry about them for a very long time.
 

wsteele

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That’s what I’m thinking. The vehicle is 8 years old and I’m pretty sure these are original sensors.

My first “factory” set lasted 10 years, but the first 7 years the truck was in a heated garage each winter, so probably best case life.

Definitely take the advice offered for genuine Delco OE. When I had mine replaced (like 3 yrs ago) the shop just put what they sold in and not thinking, I let them. I have already had a few relearn episodes. Almost for sure, I will be replacing them with my next set of tires. Delco OE next time!
 

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