bad tire pressure sensor

[williewike]

i've had the warning bells going off since winter telling me i have a bad or missing tire pressure sensor. since i check my tires with a digital guage weekly, i would rather just disable the bells than go through the work and expense of replacing the sensors. is this possible? i don't want to disable anything else. all these bells and whistles just make me like the CJ that much more!

[tomsjeep]

i've had the warning bells going off since winter telling me i have a bad or missing tire pressure sensor. since i check my tires with a digital guage weekly, i would rather just disable the bells than go through the work and expense of replacing the sensors. is this possible? i don't want to disable anything else. all these bells and whistles just make me like the CJ that much more!
Everything I just dug through (and I'll admit I'm not that good at this kind of digging) says the EVIC has to be checked/replaced, etc. That seems like an awful lot of trouble for a tire pressure thing. I was trying to run down the fuse/wire trace in the manual, but I'm hanged if I can find it.
:vbac476:
Just call me "mr. badwrench".
There has got to be a way, but since it's part of the vehicle internal computer read, I'm lost when it comes to tackling it.

[Jill75]

I think you can disable the bell and just go on your way to do the checking with your digital gauge weekly.

I would rather check it myself than depend on the sensor as it sometimes might malfunction.

[williewike]

the sensors are not totally accurate when they do work. it just seems to be too much to have to break down each tire, all 5 of them, to replace one sensor. all these electronic goodies are great when they work but a royal PIA when they don't. especially since the libby is out of warranty and it all comes out of my pocket. this thing has more bells and idiot lights than a 747 and i'm not looking forward to dealing with all this when it goes bad. i used to enjoy working on my vehicles, now i dread it.

[Sccafire]

The 5 tires do not need to be broken down to find the bad sensor. A good shop will have a handheld scanner that will be able to tell them which one is not working.

[renegadestang]

The 5 tires do not need to be broken down to find the bad sensor. A good shop will have a handheld scanner that will be able to tell them which one is not working.


What he said. So, I take it that the Libby has a direct TPMS?

[williewike]

i know what TPMS is but what's direct TPMS?

[tomsjeep]

What he said. So, I take it that the Libby has a direct TPMS?
I don't know what language that is... but the Libby has the same sensor sysytem that Rubi's do (I know because the ideal fit for bigger tires for lifted Libby's are Rubicon 16" wheels).

[offroadohio]

Yes the libby has direct TPMS.

A non direct system works via the ABS/Wheel speed sensor ring and goes off when one tire spins faster than the other.

Some systems are location specific, lf rr ect and need to be retrained at each rotation, I dont think many chryslers are like this.

Take it to walmart and have them them find the bad one, they should do it for free.
Its a matter of settign the vehicle to retrain the sensors and finding the one that doesnt respond to the scanner.

[williewike]

the ideal fit for bigger tires for lifted Libby's are Rubicon 16" wheels).

the wife's libby came from the dealer new with 17" wheels. paid an extra grand for them, they're chrome! found out about a year later that they're chromed plastic and the 17" tires are expensive and suck on wet roads. (they're goodyear wranglers). anyway, i'd rather not replace the sensors, i just want to shut off that damn bell telling me i have a bad or missing sensor. i was hoping there was some way to stop this by programming in the overhead console. if anyone has any ideas, i'd appreciate it.

[tomsjeep]

L.O.S.T. KJs website had these:
http://www.lostkjs.com/forum/phpBB2/viewtopic.php?t=40414&highlight=tire+pressure+sensor
http://www.lostkjs.com/forum/phpBB2/viewtopic.php?t=37308&highlight=tire+pressure+sensor


It is probably in the SM, but not clearly marked. At any rate, I didn't find anything. If you come up with a solution, let me/us know, as I'm sure I'll be there (warning bells) soon enough myself.

edit: and yeah, I know the bling-bling 17" wheels cost more, but most folks lifting their Libbys seem to try to acquire the 16" Rubicon wheels to put 32" or 33" tires on (about as big as you'll get stuffed in under there).

[renegadestang]

I know that when a Toyota vehicle with the direct TPMS system has a sensor problem, we're able to hook our scan tool up to it and we get readouts from each sensor. Then it's just a process of elimination. Lower/raise the pressure in each tire until you do one that doesn't change any of the vitals on the screen. Then that one is the culprit.

[offroadohio]

I doubt there is anyway to shut the beep off. All new vehicles are now required to have TPMS, it is unlawful to remove any of the sensors or sensor componants.

[renegadestang]

I doubt there is anyway to shut the beep off. All new vehicles are now required to have TPMS, it is unlawful for dealerships to remove any of the sensors or sensor componants.

Fixed. :happy:

[paintrain]

how????????????

[williewike]

how????????????

the problem has not been fixed. he was referring to a quote in a previous post. here's the deal- i do NOT want to replace any of these sensors. they are not accurate and i do not want to spend any money to replace something i have no use for. i simply want to stop these bells and warnings from going off every time i start the vehicle. if i have to live with it, i will. but i was hoping someone would know how to turn off the bells.

[tomsjeep]

Hey G.O.F., I've been pondering on this...
since the diagnosis process is supposed to involve the EVIC, have you tried an OBD2 programming tool on it? Maybe it's something you can get at inside the computer that way. Obviously this is nothing solid, just a hunch.

[williewike]

no, haven't tried any of that. don't have any of those high tech tools. just about ready to try some high explosives. it figures all this stuff starts to go wrong now. just paid off the libby and got the title yesterday. no more warranty, it's all on me now. hoping to get away without a car payment for a while. besides, overall the libby runs fine and we haven't had any major problems. it's just really irritating to have to listen to warning bells every time i start it.

[offroadohio]

Fixed. :happy:

Not just dealerships. anyone servicing the vehicle, mom n pop shops, chain shops, ect..

[the Captain]

just take the bulb out of the dash

[williewike]

it's not a bulb in the dash. it flashes a message in the overhead console and a bell rings until i hit the reset button. it's just annoying as hell. i'm surprized this thing doesn't have a warning bell to let you know when a passenger farts!

[the Captain]

it's not a bulb in the dash. it flashes a message in the overhead console and a bell rings until i hit the reset button.

LOL, a bell...must have been chrysler's last big move to bring in more service work at the dealerships. toyota's have a light bulb in the cluster. we are not allowed to remove them but i have been asked many many times. you could at least unplug/smash the bell. unless its the door/seatbelt/keys left in the ignition bell as well. i bypassed the reminder bells and what not in a ford truck i used to drive. i left the lights on and killed the battery maybe 10 or so times. all in all, it was worth it to not have to "obey the bell".

[Jefe]

I skimmed through the post and didnt see anything about the spare. Have you checked the tire pressure on it? I know on my 05 Grand with the TPMS the spare will cause it to give the error message. Just a thought.

[williewike]

yeah, i check them all every saturday morning with a digital guage. they all read 33 lbs on my guage, 33 front and 32 rear on the display in the libby. after driving a while, the display inside shows varying pressure for all tires. my guage shows they all gained pressure equally. so they aren't accurate and i don't need them. all these little goodies are great when they work, but i think they're more trouble than they're worth when they don't.

[Jefe]

yeah, i check them all every saturday morning with a digital guage. they all read 33 lbs on my guage, 33 front and 32 rear on the display in the libby. after driving a while, the display inside shows varying pressure for all tires. my guage shows they all gained pressure equally. so they aren't accurate and i don't need them. all these little goodies are great when they work, but i think they're more trouble than they're worth when they don't.


Have you tried setting them to all of the same pressure? As far as gaining PSI while driving, that's normal. As your tires heat up, the air inside heats up and expands and vice versa on a cold day sitting outside.

[the Captain]

perhaps you could switch to rubber valve stems and throw all the sensors in your spare, or even a small inflatable tire stowed somewhere in the vehicle.

[williewike]

Have you tried setting them to all of the same pressure? As far as gaining PSI while driving, that's normal. As your tires heat up, the air inside heats up and expands and vice versa on a cold day sitting outside.

reread my last post. they are all inflated to the same pressure according to a good digital guage. the monitors on the libby are not accurate. i also understand that the pressure will go up as the tires heat up from driving. the whole point of this post was not to fix or replace the TPMS but how to stop an annoying warning bell from driving me nuts without spending a ton of money on something that i find totally worthless.

[Jefe]

Did you check the owners manual to see if there is a fuse for it, if so pull it.

[tomsjeep]

Did you check the owners manual to see if there is a fuse for it, if so pull it.
You don't own a Libby do you!?! I can tell!
:lmao:
I already dug through the service manual (can't discuss how I have the dealer's service manual)... the fix is not something that can be unfused... and requires checking the EVIC... recommends swapping it out to make certain the EVIC is not faulty. That's easy for a dealership to do with the "known good part" on the shelf. Not so easy for the rest of us out here in the woods.
:dancing2:
I am happy to report that it is possible to pull the fuse so the makeup mirrors in the visors don't light up, if that pleases you any!

Seriously though. Do you have the overhead console? Have you tried going into programming mode to tweak/turn off the sensor?
EVIC PROGRAMMING MODE


The Electronic Vehicle Information Center (EVIC) provides the vehicle operator with a user interface, which allows the selection of several optional customer programmable electronic features to suit individual preferences. The EVIC must be placed into its programming mode in order to view or change the programmable features. To enter the EVIC programming mode and to view or change the selected programmable features options, proceed as follows:

Turn the ignition switch to the ON position.
Depress and release the Menu push button. The first item in the programmable features menu list will appear in the EVIC display.
Momentarily depress and release the Menu push button to step through the programmable features list. Each programmable feature and its currently selected option will appear on the EVIC display in the sequence shown in the Programmable Features list that follows.
Momentarily depress and release the Step push button to step through the available options for the programmable feature being displayed.
The option that last appears in the display with a programmable feature before exiting the programming mode, becomes the newly selected programmable feature option.
The EVIC exits the programming mode and returns to its normal operating mode when the C/T (compass/thermometer) push button is depressed or when the end of the programmable features menu list is reached, whichever occurs first. SERVICE INTERVAL - The options include from 1000 to 12000 kilometers in 1000 kilometer increments (2000 to 7500 miles in 500 mile increments). The default is 12000 kilometers (7500 miles). The selected distance becomes the interval at which the Perform Service warning message will be displayed by the EVIC. If a new distance is selected, a second programmable feature appears, RESET SERVICE DISTANCE? - The options include No and Yes. The default is Yes. When Yes is selected, the accumulated distance since the last previous Perform Service warning message will be reset to zero because the service interval has been changed. When No is selected, the distance until the next Perform Service warning message is reduced by the accumulated distance since the last previous message.

[Sccafire]

Buy a new JK. They have aftermarket programmers for there TPMS.

[williewike]

after reading all of your ideas and advice, and all the research i've done myself, i've decided to live with it. it's the wife's DD so she has to listen to it more than me anyway. it's just another one of those things they put on to raise the price. just checked blue book on it and found it's worth about one third of what we paid for it. that sucks, but since it's paid for and runs great, we plan to keep it for a while and try to get our money's worth. i like the thought of not having a car payment for a while. maybe now i'll get some of those things on my wishlist for the CJ.