tpms problem
Thread Starter
Racer
Joined: Feb 2014
Posts: 251
Likes: 60
From: Peru Indiana
tpms problem
My front 2 sensors were not showing pressure , so i tried relearning did nothing . Pulled a wheel and removed the sensor to be sure which sensor I needed . Just tried learing the new ones , still nothing . My fobs work fine . Any ideas , I will add the battery was low when I tried the new ones but as I said the fobs work .
Pro
Joined: Dec 2014
Posts: 681
Likes: 275
From: Cincinnati Ohio
From your description it sounds like 2 are reading correctly and 2 are not. The 2 that are not, do you have just the ”L” and “ R” reading on the DIC or do you have “XX”. When was the last time you knew all 4 sensors reading correctly? With 2 good and 2 bad, it seems worn out batteries in the sensors is the most likely. How old are your sensors? Lots of Forum members seem to have at least 10 years with OEM sensors but I do recall some reporting only a few years with some aftermarket ones.
When you tried to program the 2 new ones, were they the ones triggered by a strong magnet (like the OEM sensors) or with a triggering tool?
When you tried to program the 2 new ones, were they the ones triggered by a strong magnet (like the OEM sensors) or with a triggering tool?
Melting Slicks
Joined: May 2013
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From: New Jersey
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Sounds like new TPMS sensors are in your future.
Thread Starter
Racer
Joined: Feb 2014
Posts: 251
Likes: 60
From: Peru Indiana
I got my 98 in 2013 replaced the sensors and receiver with the 2001 to 2004 version . so yes it has been at least 10 years since they were installed . Yes I use the round magnet . I will retry the new ones in a day or two once the battery has a full charge.
Pro
Joined: Dec 2014
Posts: 681
Likes: 275
From: Cincinnati Ohio
I think if my car had this issue and I wanted to trouble shoot, I would start the FOB programming with the two rear wheel sensors that are still working. The car does not actually know which wheel is which so just start with the 2 rears even though it is asking for the fronts. Lets say those 2 program and then you get to your new sensor and it won’t program. This tells you your tpms system is probably OK but your new sensors are not OK, or your new sensors are the ‘97-‘00 version, or you require a triggering tool rather than the magnet.
Drifting
Joined: Sep 2022
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From: In the woods
2024 C5of the Year Finalist - Unmodified
Not to hijack, however I just replaced all four wheels and tires along with 4 new TPMS sensors. I now get no reading on any of them, no XXX just blank. I assume I have to trigger them and I also assume I probably have to use a tool vs a magnet. Sound correct?
Pro
Joined: Dec 2014
Posts: 681
Likes: 275
From: Cincinnati Ohio
My recent experience with AC Delco OEM style sensors was a blank was due to not triggered. The tire shop who installed them last Summer said I just needed to drive it a few miles and then they would read. I was pretty sure he was wrong but I said OK and headed home with the blank reading (only showing the "L" and "R"). I got home, triggered them with a magnet because they were OEM style, and all was good.
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Advanced
Joined: Jan 2024
Posts: 69
Likes: 26
From: Rockwall, TX
Mine are the same, but I don't really worry about it. I find it amusing that watching enough youtube videos, you soon realize everyone starts their C5 and clears the TMPS error from the dash immediately. It seems like everyone's got it.
I'm getting new rear tires next week and I'll try the magnet on all four corners to see if I can get them all to read. If not, I'll just stay in the "welp, this is just the car's character" club.
I'm getting new rear tires next week and I'll try the magnet on all four corners to see if I can get them all to read. If not, I'll just stay in the "welp, this is just the car's character" club.
Drifting
Joined: Sep 2022
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From: In the woods
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^^ That is where I am heading. My ritual now is hit the reset button to kill the "service vehicle soon" (EBCM is fried), TMPS and then go. I will try the magnet, if that does not work eff it. This is the first vehicle to have TPMS I have owned, not like I am used to monitoring it.
Race Director
Joined: Oct 2004
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Mine are the same, but I don't really worry about it. I find it amusing that watching enough youtube videos, you soon realize everyone starts their C5 and clears the TMPS error from the dash immediately. It seems like everyone's got it.
I'm getting new rear tires next week and I'll try the magnet on all four corners to see if I can get them all to read. If not, I'll just stay in the "welp, this is just the car's character" club.
I'm getting new rear tires next week and I'll try the magnet on all four corners to see if I can get them all to read. If not, I'll just stay in the "welp, this is just the car's character" club.
Burning Brakes
Joined: Jul 2014
Posts: 1,170
Likes: 253
From: Oconomowoc Wisconsin
If you are installing new TPMS sensors, I would disconnect the negative battery cable for 10-15 minutes after you install the new sensors. I had an issue when I had new tires and new Schrader TPMS sensors installed on a 2004 convertible I previously owned. The local tire shop had problems getting all 4 new sensors to sync and the front left sensor kept getting a reading of XXX. They said to drive it for a day and see if it syncs. Well drove it 50 miles that day and no change. I read on this forum that disconnecting the negative battery cable clears old data that maybe affecting the new sensors from syncing properly. The next morning I disconnected the negative battery cable for 15 minutes. After reconnecting all tires showed 0 tire pressure. Went back to the tire shop and they used their tool and all 4 tires synced up within seconds and showed correct tire pressure. Never had a problem after that.
Burning Brakes
Joined: Dec 2022
Posts: 1,023
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From: Nappytown MD
Mid year last year I installed new tires and rims along with new TPMS sensors on my 02. I could not get the magnet to work for crap. Bought a 9 dollar tool on Amazon and it works exactly as it should. Seems as though some of the sensors need that active TX signal to reset them vice the magnet. Anyway, only 9 bucks.
Drifting
Joined: Jul 2004
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From: Pingree Grove IL
Not to hijack the thread either, but all of you that are getting TPMS sensors replaced by a tire shop, everything should be reprogrammed before you leave. None of you should have to do any of this at home, unless your replacing your own TPMS in your own garage and mounting and balancing tires, and spend the extra 50 dollars on TPMS sensors known to work with the C5. When they don’t work you get new ones, that’s it.
Drifting
Joined: Sep 2022
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From: In the woods
2024 C5of the Year Finalist - Unmodified
^^ I agree with that, except... I bought my tires and wheels from Get Your Wheels. Tires were mounted, balanced and sent to my house from CA, I live in Florida.
Burning Brakes
Joined: Dec 2022
Posts: 1,023
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From: Nappytown MD
Same here (different vendor) but only issue I had was the magnet just wouldn't work on mine. The second I used the active transmit tool, each corner would "beep" within a second or two of me triggering the tool. And I had a large donut magnet that could lift pounds, it just wouldn't trigger the sensors.
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Good luck getting the sensors to sync with the car.
Thread Starter
Racer
Joined: Feb 2014
Posts: 251
Likes: 60
From: Peru Indiana
I have tried using the magnet . I have tried using the relearn tool ( i believe it is model EL 50488 ) I have tried useing both at the same time . I disconnected the battery for 24 hrs . That did turn all the readings to blank . Nothing is working , so I put the old sensor back in and inflated the tire .Done pissin with it .
I put 4 new sensors in my 08 Impala . 3 of them are fine , one just kind of pops up random numbers . As high as 84 psi , as low as 7 psi .
I guess i am not ment to have working tpms . So far my Colorado is still functioning ok .
I put 4 new sensors in my 08 Impala . 3 of them are fine , one just kind of pops up random numbers . As high as 84 psi , as low as 7 psi .
I guess i am not ment to have working tpms . So far my Colorado is still functioning ok .