I have a 2005 roadster limited that is equipped with the tire pressure sensors. I have slow leak in one of the tires that the dealer can’t seem to find nor fix so I deal with having to air up my tires often. I noticed the light had come on the dash alerting me of low pressure in the tire. I filled the tires to the proper pressure however the light is still on. I had the car in the dealership today and the service tech informed me that in cold weather the pressure can change as much as 4 PSI and that it messes with the sensors.
Is it just me or is the service tech full of it? Are these sensors under warranty?
(OK for all you guys north of the Red River – This is North Texas - we don’t deal well with temperatures below 40°F / four seasons here, Fall – Early Summer – Summer & Late Summer)

 

This is true

 

I know that when I put my old set of tires from my base, on my dads limited
it took almost 2 days for the TPS to light.
I have a 2007 Avalanche and I get TPS codes in very cold weather.
I think you might have a bad TPS, it might be your leak?
I would try a tire shop, that is what thay do all day long.

 

I was getting that too. I put a couple of extra PSI in the little boogers and haven't had that light come on since. The temperature doesn't vary much here so I won't have wild swings like you might. As mentioned above, a tire shop can find a leak. I think your Chrysler guys might have been a little neglectful
in this area.

 

Let me take that "wild swings" statement back. I obviously didn't read your post very well the first time. Your weather sounds like mine.

 

Actually wild temp swings is what North Texas weather is all about. Wake up to 35 degrees at 7am and by 2pm it is 75 degrees. So maybe the tech is not as full of it as I thought.

 

The techs are full of it. When I used to have the "cold weather" TPMS, I'd reinflate the low tire, and the guage changes immediately. I've heard that the TPMS comes on when a tire dips below 4PSI below the other tires. Reason would conclude that if all tires experienced the same temp. drop, the light shouldn't come on. Can anyone verify this?

Boomer Sooner!

 

It seems to vary on how long it takes before the light goes off after proper inflation. I deal with this every time I take off my drag radials and put on the stockers.

 

As I understand it:

Each TPMS sensor must be "taught" individually:

• A preset "Normal Pressure" i.e. 30 psi.
• A "window" of error. i.e. + or- 15% or 4.5 psi for a "norm" of 30 psi.

But that's how it was explained to me by the tech at my dealer.

And he said they will warn of too high a pressure also. IDK.

 

Tire pressure will decrease/increase by about 1 psi for every 10 degree decrease/increase in temperature.

 

That too!

 

Have you tried having your tires filled with Nitrogen? It supposedly leaks less than straight air. Here is a link with some info:

http://www.getnitrogen.org/why/index.php

Have a good Nitrogen fill!

 

I have my TPMS light on constantly as well. I think it is because of a slow leak or because when I was forced one time to drive down a gravel road a rock flew up and hit the tip where you place the air pressure gauge. Either way I am sure this gravel road is what caused the problem. I fill up my tires frequently also. A cheap way to solve the problem of the annoying orange TPMS light on the left side of the dash is to cut a very small piece of black electrical tape and place it over the light. Voila! No more annoying light, and the tape is barely noticeable. I always forget it is there. Just make sure to keep an eye on that tire...

 

My first long road trip this spring was MI to CT and the TPMS light went on about 1/2 way. I had checked all my tires and filled to 35 psi before I left, and I checked again on the road and at my destination and they were all the same. The light does not go out regardless of outside temp.

I figure one of the monitors has failed and, of course, it was right after my 3 year warranty expired. Since I have a $100 deductible extended I am waiting for a few more things to fail then I'll bring it in. But nothing else has failed. This is a reliable car and, frankly, I could do without the TPMS. I was thinking about the black tape fix like I have applied to all my VCRs to fix the clocks always reading 12:00.

 

Goldwing, those clocks are programable to the correct time.

MikeR

 

The story goes on! Took the Crossfire in for another dash light letting me know that I had a bulb out. I aked the tech to take a look at the tire pressure. This time they actually checked the codes to find out that the receiver - not the transmitter in the tires - is defective. Hopefully this will take care of the issue for good!

 

While I love the Crossfire there sure is a lot of crap that goes wrong with these things. What year did the legend of the bullet proof Mercedes die. My GF's Bro in law read in some consumer advocate magazine to just avoid them. Did someone from GM start running Daimler Benz?

 

The TPMS will trip when there is a pressure loss of 25% or more, this can be one tire or a combination of tires. The TPMS on my XLR shows exactly what the tire pressure is in each tire in the DIC (Driver Information Center). Temperature flucuations will trip the TPMS, fill your tires with nitrogen and this will end the TPMS light tripping in cold weather(unless you are actually losing tire pressure).

 

Until recently I filled my tires with a mixture of gases, 78% nitrogen, 21% oxygen and about 1% of assorted gases. I called this mixture .... air.

The main reason we use nitrogen alone is because we eliminate two destructive elements, water and oxygen. Both of these are destructive to rubber and metals, by attacking the rims, tire rubber the valve stem and its seal. Water in the air is high on a humid summer day or practically non-existent on a frigid winter day, living in Canada I see both

Air and nitrogen expand about the same so air pressures in tires will fluctuate minimally differently with either of these gases inside. A large decrease in the temperature can lower the pressure enough to trigger the TPMS light, especially if the pressure was a little low to start with. Similarly a large increase in temperature can increase the pressure and if the tires are then ran at high speed the pressures could exceed safe levels, a not likely but possible scenario.

Low profile tires naturally have a lesser volume inside them than regular tires so the loss of a small amount of gas has a larger effect on the pressure. The TPMS light coming on frequently may mean that it is not calibrated correctly or faulty. Correct pressures would indicate this to be the case.

Keep the tires checked regularly, just because the light is not on does not mean they are inflated to the correct pressure. and never run them without the valve stem caps. If you use nitrogen keep using it if you can, but a top up with air adds 79% nitrogen anyway.

 

Ha! I use the same mixture of gasses for my lungs! Well, they finally checked the codes and guess what, the tire receiver needed to be replaced. Fixed under warantee and no more light on the dash!