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Tire Pressure Monitors..............

Goose

Goose

Well-known Member
A couple of months ago, the messages "Service Tire System Soon" and "One Low Tire" appeared alternately on the display on our Chrysler T&C, even though all of the tires were properly inflated. I replaced all of the sensors, and no more problem.

Now, starting a few days ago, we off and on get the "Service Tire System Soon" message. All four individual sensors test OK with a scanner. Besides the Chrysler, we have a Lincoln MKX with the monitor system, so I invested in my own scanner. The scanner picked a bad one out of the original four I replaced on the Chrysler, so it appears the scanner is working OK.

Does anyone know what else could be causing the problem?
 
Those factory ones on my sons Challenger were junk. They were replaced twice under warranty and still went out. Not just one, ALL of them, at different times. Local tire shop put some in all 4 tires last year and haven't had one fail yet. They said the key was to make sure the air was dry going in, or use nitrogen.
 
Just took my Town & Country into the dealer yesterday. Had to pay $110 for diagnosis and part, before they would order it. Then pay the labor when they replace the part. They said there was a bad sensor in the right rear. I hope that's all it is, but I have a funny feeling about this.
 
My wife's grand caravan has had trouble with them for the last 4 years or more. One of the work trucks has at least 1 dead sensor in it too.

Seems like one can reasonably expect a 2-5 year lifespan on the blasted things before they start to act up.

Her van only has the tire light (no display)so diagnosis requires a scanner. Hers actually corroded through at the valve stem and she had a flat out on the road with the first one. I changed 2 of them and within a week one of the remaining 2 had failed. Fancy non flexible all aluminum valve stems readily corrode with the road salt in my area.


The last time she had a flat on an old sensor wheel I said out a regular valve stem in... Saved $100...

I found some that look like a regular rubber valve stem closer to the $50 range last time I was looking. May try those next time...

Convenient when they work and give a true reading. One more light in your face later on imho.

Mandated safety garbage... My billfold protests...

Carl
 
Yeah, they're OK when they're working right.

On the other hand, I've never owned a vehicle where I said, "Gee, I wish this thing had tire pressure monitors on it".
 
While they may cause problems for me down the road, I figure the tire sensors saved me a tire and rim on my 2 year old F-150.

Didn't feel anything wrong when the TPS went off saying I was down to 18PSI in the right front tire while doing 75mph on the expressway.

By the time I got off the road it was down to 12psi, by the time I got out and looked at it, it was flat.

Fred
 

Goose did you replace them yourself? Can you replace them without breaking the tire down? Did you get them on line? What did the whole process cost you? I had a low tire warning on my wife car soon after she got new tires. I found one tire down 10lbs and a slight leak at the stem. I tightened the stem and and slowed the leak down but it still looses a little.
 
I'm a fan of the Tire Barn. They use nitrogen too. They sell lifetime, free balance, rotation and road hazard for $50. Just two rotations at a car dealer is more than $50. They rotate my tires every 6k.

One time as a joke I told them to rotate the air too. They changed the nitrogen. After they finished I told them it was a joke, we both had a laugh.

They tell me the TPM has a battery that needs changed every few years.

My advice, find a good tire store you can trust and let them take care of your problems.
 
(quoted from post at 20:39:38 08/30/18) Yeah, they're OK when they're working right.

On the other hand, I've never owned a vehicle where I said, "Gee, I wish this thing had tire pressure monitors on it".
Click to expand...

Me neither.
 
I've had two go out on my Imapala and I'm not going to even worry about replacing them. Most guys in the Impala forums say you replace them and 6 to 12 months later they go bad again. Why waste the money.
 
Interesting. I'm on my second set of tires on my 2011 Silverado and didn't change sensors. I expect "Any Day Now."........(Ronnie Millsap) will have one
going bad.

When you pulled yours and replaced with a valve stem, did you get a warning light from not having that sensor talking to your onboard computer?

If not, I may do that with mine when they start going bad. I visually check my tires every time I get in (which is a once a week kind of thing) and I could
detect a low tire......like I've only been doing it all my life before this truck! I figure one could break down one side of the tire, leaving the other intact to keep
from upsetting the balance......course that raises another question: How much does one weigh......removal upsetting the balance..........always a What
If....nothing is ever simple any more.

Would appreciate knowing.

Thanks,
Mark
 
I have never had any tire pressure sensors or the like. They have those Cat eye systems for trucks thought all that stuff was a flat tire waiting to happen.
Not that hard to just walk around them occasionally to look at them.
 
We have them on our Impalas. The 2012 has never had an issue, the two 2017s are still under warranty. Works great when you jump in the car and check the pressure in all four tires in a second before you take off on a 5 hour drive. Half the time my pressure gauge has disappeared from the glove box so it turns into a real PIA to check the tires like you should. My wife's Kia minivan will have the sensors go off in extreme cold. I think the moister in the compressed air condenses in the valvestems. I found the easiest thing to do is let a little air out, fill the valvestem with WD40 a couple times while reinflating to the correct level.

The other thing to remember is these TPMS stems have special caps to keep moister out - and you need to keep those special caps on.
 
More "Unnecessary options" to give us grief,,our only hope is that the engineers that are Drunk on technology will soon sober up and get back to basics...Cheap imported sensors are the heart of most problems...
 
Some people, who do not like or want the pressure sensors have been known to "fix" the problem this way:

Put regular valve stems in the rims.

Then......

A hunk of sched 40 pvc pipe big enough to put the four sensors into.
One end has a threaded plug or cap with a bolt-in-plain-hole metal schrader valve.
Wrap four sensors with packing material so they will not bounce around as you put them in the pipe. After they are in there, put in more packing before you put the cap/plug on the pipe.
Pressurize to specs. And place the pipe in trunk or where ever you want in the vehicle.

Now when a sensor goes bad or runs out of battery power, just open the pipe and replace sensor or battery.
Will never again have to pay a shop to do it.
 
(quoted from post at 10:47:19 08/31/18) Some people, who do not like or want the pressure sensors have been known to "fix" the problem this way:

Put regular valve stems in the rims.

Then......

A hunk of sched 40 pvc pipe big enough to put the four sensors into.
One end has a threaded plug or cap with a bolt-in-plain-hole metal schrader valve.
Wrap four sensors with packing material so they will not bounce around as you put them in the pipe. After they are in there, put in more packing before you put the cap/plug on the pipe.
Pressurize to specs. And place the pipe in trunk or where ever you want in the vehicle.

Now when a sensor goes bad or runs out of battery power, just open the pipe and replace sensor or battery.
Will never again have to pay a shop to do it.
Click to expand...

It would interesting to know how this person with TPMS loose in PVC notifies TPM on vehicle which sensor is for which tire(LF,RF.LR or RR)
 
(quoted from post at 13:25:49 08/31/18)

It would interesting to know how this person with TPMS loose in PVC notifies TPM on vehicle which sensor is for which tire(LF,RF.LR or RR)
Click to expand...

How does the vehicle know which sensor in which tire?

But an easy determination when in the pvc would be to open the pipe and one by one pull the battery out of each sensor.
Until the vehicle notice changes.
 
This is not an option, it is a government mandate for safety.

The vehicle knows which sensor is where because they are programmed individually to a location on vehicle. Most vehicles would need these sensors reprogrammed every time you rotate the tires. If you don't reprogram sensors, it will still report a certain tire is low but it might be somewhere else on the vehicle.
 
Specifically, on the original ones on the Chrysler, I took one out, photographed it and copied down all of the numbers on it. (You just have the break the bead on the front side). I then put it back together so we could use the vehicle.

I went on line and surfed EBay and Amazon till I found a set where all of the numbers matched. Like I said, you just have to break the bead from the front side to replace the valve stem. I replaced all four, and without any reprogramming the light went out after driving about 2 miles.

When they started acting up a few days ago, I bought my own scanner. The scanner shows all of the current sensors on the Chrysler to be good, also the ones on our Lincoln MKX. I tried the scanner on the sensors I took out of the Chrysler a couple of months ago. Three of them worked and showed zero air pressure, and one of them didn't work, so I assume the scanner is working OK.

The scanner cost $139, but for what you can wind up with for expenses on these things, I figured it would be a good investment.
 

Sorry I can't offer advice on your problem, but I'd just like to say that my last two vehicles have had the low pressure warning indicator and I think it's one of the best things to come out on cars in generations.
 
(quoted from post at 15:12:45 08/31/18) This is not an option, it is a government mandate for safety.

The vehicle knows which sensor is where because they are programmed individually to a location on vehicle. Most vehicles would need these sensors reprogrammed every time you rotate the tires. If you don't reprogram sensors, it will still report a certain tire is low but it might be somewhere else on the vehicle.
Click to expand...

Yes, the TPMS is government mandated. However, there is no penalty for John Q. Public to operate a vehicle without the sensors in the tires.
The rest of your post about programming makes no difference when they are no longer in a tire.

The sensors in a pressurized container is popular among those with winter and summer sets of tires, aftermarket bling rims and tires as well as on 4x4's.
 
On this Chrysler, when the sensors were working properly I could rotate the tires at will with no problems.
 
True. My question is if you remove the sensor so it can't talk to the car's computer, if you reset the fault with no sensor will it reset and stay. Didn't want to
be the Guinea Pig when somebody has already invented.......paper?
 
(quoted from post at 20:42:16 09/01/18) True. My question is if you remove the sensor so it can't talk to the car's computer, if you reset the fault with no sensor will it reset and stay. Didn't want to
be the Guinea Pig when somebody has already invented.......paper?
Click to expand...

No, the fault will always be there, it is constantly looking for 4 programmed sensors and when one or all drop out or go away, a fault is indicated.

There are ways to disable or reflash the module to "forget" about the system though.
 
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