Tire Light Keeps coming back on

R

r32

New member
My tire light keeps coming back on. I've taken it to my tire shop (good friends and trustworthy) and they keep saying all the air in all my tires is low. They fill it up with air and tire light goes off again. Then, just last week the tire light came on again and at least one of my tires looks low.

Does this mean I might have a slow leak in all my tires? I've inspected the tires several times and cannot find any nails, punctures or cracks. This whole thing seems to have started after I went offroading in the Nevada desert for a day.
 
Register to hide this ad
Does the air temperature where you live continue to drop? Remember the ideal gas law: PV=nRT. If the volume of your tires remains the same (it does), but the ambient Temperature drops, then the Pressure must also drop.
 
you may have gotten a little dirt under your beads if you lowered the pressure in your tires enough when you went wheeling. its a pita but you can take the wheel/tire off let all the pressur eout and break the beads off and clean them. may be somehting you want to have done at your tire place if your not comfortable reseating a bead.
 
I see your in Texas- if your weather is anything like us here in AZ, in the AM the temp is 40 and in the afternoon 70. The pressure is changing in your tires just enough to trip your warning light. It's normal- been happenig to me for the past 2 weeks.
 
Check your spare tire too.

The spare tire also has TPMS, so you need to make sure it's got enough air in it as well.

This is a common problem on the 4th gens.

(FYI. My TPMS light came on this morning due to the colder weather, but I've been too lazy to lower the spare tire and check the air pressure.)
 
^Actually I'm in CA. :)

Good call guys! The temp has dropped quite a bit lately as the onset of Fall weather has finally arrived and at night we've been dipping into the 40's. I can't believe I didn't think of this.

So should I put some air back into them to get them back up to the listed pressure on the sidewall?

:thanks:
 
Tire pressure changes roughly 1 PSI for every 10 degree F change in ambient temperature. Based on that, if you set your tires at 30 PSI when it was 80 degrees outside and then the temp drops to 40 degrees, your tire pressure will be around 26 PSI.

+1 on checking your spare. My TPMS light came on a few weeks back and it turned out to be my spare. Seems the TPMS warning will light around 26 PSI.

What pressure are you running? I usually run 32 PSI all around and am adjusting it monthly as the weather changes. Get yourself a high capacity hand pump and a digital tire pressure gauge and fix it yourself. I can't believe you had a SHOP put air in your tires.
 
Crazy, I got in my rig this morning and the tire pressure sensor light wouldn't go out either:happens:. Guess I'll have to add some air. Pretty common this time of year I'm guessing.
 
Nuke said:
I can't believe you had a SHOP put air in your tires.
Click to expand...

Haha I do that also. It's that laziness in me :biggrin2: I actually have nitrogen though so I don't have a tank of that lying around. You could also try to convert your tires to nitrogen, it helps with gas loss. Also, depending on when (and where) you got your tires, there were some places that received defective valve stems from China that continually leak. If you are losing more than 1-3 psi per tire your valve stem might be bad.
 
There's a lot of differing opinions on N2. IMO, it's not worth the effort. Granted, you don't see the temperature/pressure difference like you do with everyday "air" but I'm always adjusting my tire pressure for towing and for ride enhancement. I don't always use the same pressure for around-town as I do for long trips. "Unless I can get it for free, it's not for me."
 
Nuke said:
"Unless I can get it for free, it's not for me."
Click to expand...
Haha should I start calling you Nuke-stein?? Unlike other things there is some science behind the use of it in tires. It was funny though, one day my wife took her car to the shop because her tire was low and the dumbass told her he couldn't add air to the nitrogen. I thought to myself, obviously this guy never took a chemistry class...
 
Considering the cost at most shops, it's price outweighs it's benefits. I wonder how many senior citizens that don't even know how to use a tire pressure gauge and on a tight budget were talked into nitrogen. :gun4:
 
I've run Nitrogen in my tires for 6+ years now, and I like it. I don't have to worry about pressure changes due to temp, and it doesn't seep through microscopic leaks or permeate the rubber of the tires. I do check the tire pressure regularly, but I've yet to have to add air to a nitrogen filled tire. The only tire I've had to add air to in that time is the spare on the T4R, when the fall temp. drop caused the pressure in the spare (std. air) to drop below 27 PSI.
 
Annoyed said:
I've run Nitrogen in my tires for 6+ years now, and I like it.
Click to expand...

So.....when you had your nitrogen installed, how did they go about removing the air prior to adding the N2?? Did the tech pull the tire down to a vacuum and then insert the nitrogen?

BTW, every gas is affected by temperature...
 
Last edited:
You must log in or register to reply here.

Members online

No members online now.
Total: 245 (members: 0, guests: 245)

Forum statistics

Threads
278,309
Messages
3,554,071
Members
248,016
Latest member
Advally Service

Share this page

Trending content

Back
Top