Service tire mon. sys
Thread Starter
Pro
Joined: Jan 2010
Posts: 661
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From: Ca.
Service tire mon. sys
I have read a bunch of articles with search, but mine is different. Today out of the blue on a drive, I get this warning, and it is on all four tires. They show xxxx on front and rear. It seams rare that all four batteries would go out at the same time. I added air to all four tires and that did not help. I drove the car for twenty minutes after adding air, and that did not help. Also something weird,,,, when I got out of the car, and went to the rear, I saw the white lights on around the license plate. I then cycled the light switch, and the lights were off when I looked again. 
This could be totally non related to the tpms problem, but it was weird.
Anyway,,,any suggestions what how to test the monitor? And were it is located?
Thanks
This could be totally non related to the tpms problem, but it was weird.
Anyway,,,any suggestions what how to test the monitor? And were it is located?
Thanks
Intermediate
Joined: Jun 2008
Posts: 34
Likes: 0
I think I'd disconnected the battery for a few minutes, clean the terminal connections, reconnect and then see what that does for the situation. Then drive it and see if the situation re-occurs. Then check to see if you have any DIC codes present
Thread Starter
Pro
Joined: Jan 2010
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From: Ca.
RFA is located inside the car above the drivers side rear wheel well. Do your remote door locks work? Same unit controls the remote door locks and receive the signals from the TPM's.
What year is the car? The system for 1997 - 2000 is different from the 2001 - 2004.
Were there any codes that begin with a U???? If so what is it?
Any other codes????
What year is the car? The system for 1997 - 2000 is different from the 2001 - 2004.
Were there any codes that begin with a U???? If so what is it?
Any other codes????
About two months ago, I took off the run flats and purchased a set of used 2001 C5 wheels with sensors. I also purchased a set of Hankook V12 tires and installed them on the car. The original run flats and wheels are in the garage. For the two months that I have had the newly purchased wheels and tires, the indicated pressure on all four tires was about normal.
What I could do, is to remove two of the Hankook tires and wheels, and put back on the run flats, and see if they show a reading. If they still show xxxxx, then it would indicate that it was a problem elsewhere and not in the wheel sensors. Having all four sensors quit at the same time is not likely, but not impossible.
Thread Starter
Pro
Joined: Jan 2010
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From: Ca.
No I did not retrain the sensors. I did not know it was necessary, or possible.
The system seemed to work fine, at least for the first two months.
I will give the retraining technique a try.
Thanks
The system seemed to work fine, at least for the first two months.
I will give the retraining technique a try.
Thanks
Last edited by mooney201; Jan 29, 2012 at 02:54 AM.
Intermediate
Joined: Nov 2011
Posts: 30
Likes: 2
From: Seattle WA
How much is the magnet tool for the retraining, is it a dealer only part? this summer I may be upgrading tires, my 04' has apporx 95k on the car, how long do tire sensors last, and finally would it be a good idea to replace my originals...
Race Director
Joined: Dec 2007
Posts: 14,345
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From: Hartselle AL
St. Jude Donor '09
Alternatively, some use an old speaker magnet.
Re: the OP. Wonder if the old sensors being in the garage (assuming they're stored somewhat close to the car) were sending enough signal to "fool" the system.
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Instructor
Joined: Jan 2012
Posts: 122
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From: Maryland
XXX Tire Pressure
Mine did the same thing 15 mintues and 10 really hard miles from the dealership. I went back, they re-learned the sensors, and thats all it was.
I got the same XXX code on all 4 tires. The dealer said it happens once in a while.
I got the same XXX code on all 4 tires. The dealer said it happens once in a while.
Instructor
Joined: Oct 2011
Posts: 136
Likes: 0
From: Shreveport LA
No. You can turn the TPMS off with a TECH II but only on 2001 and newer C5's. If you have a 1997 - 2000 you have like it or not. Because TPMS was not available in the Z06 (starting 2001) there is a capability to add or remove TPMS starting that year.
HP Tuners deals with the PCM. To eliminate the TPMS you need access to the BCM and the TECH II is the only tool I know of that can access the BCM.
HP Tuners deals with the PCM. To eliminate the TPMS you need access to the BCM and the TECH II is the only tool I know of that can access the BCM.
That's great info, but bad news.
Mine is a 99.
Thank you though.
Thread Starter
Pro
Joined: Jan 2010
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From: Ca.
I placed the magnet over the sensor, and it is a very strong magnet. Still no horn. What does the receiver that is in the trunk above the drivers side rear wheel cost? What do they call it? Is it easy to replace? Is there a fuse that could be blown?
Thanks again for your help.
Thanks again for your help.
Team Owner
Joined: Jul 2006
Posts: 22,164
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From: Kannapolis NC
I placed the magnet over the sensor, and it is a very strong magnet. Still no horn. What does the receiver that is in the trunk above the drivers side rear wheel cost? What do they call it? Is it easy to replace? Is there a fuse that could be blown?
Thanks again for your help.
Thanks again for your help.
Thread Starter
Pro
Joined: Jan 2010
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From: Ca.
Ok,,, I will get one of the original wheels and try it.
No I did not get a chance to try and retrain any other wheel besides the left front. I will do the left rear along with trying to do the original left front. That makes sense that if the original wheel will not retrain, then it must be the RFA Module.
Thank you all for your help. I will post what I find out tomorrow.
Yes I put the strong magnet on the wheel above where the sensor would be. Again I only did this on the left front wheel. Tomorrow I will try it on the others, and one or two original wheels. This should narrow down the problem.
You guys sure know your stuff.
Thank you all.
No I did not get a chance to try and retrain any other wheel besides the left front. I will do the left rear along with trying to do the original left front. That makes sense that if the original wheel will not retrain, then it must be the RFA Module.
Thank you all for your help. I will post what I find out tomorrow.
Yes I put the strong magnet on the wheel above where the sensor would be. Again I only did this on the left front wheel. Tomorrow I will try it on the others, and one or two original wheels. This should narrow down the problem.
You guys sure know your stuff.
Thank you all.
Thread Starter
Pro
Joined: Jan 2010
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From: Ca.
Well,,, the mystery is solved. I placed the original tire and wheel next to the right rear tire and ran the program. The horn honked and the system went to the right front tire. It would not honk. Soooooo I guess all four wheel sensors went out at the same time.
Thanks for all your help...
P.S. where is a good place to buy replacement sensors?
Thanks for all your help...
P.S. where is a good place to buy replacement sensors?
Thread Starter
Pro
Joined: Jan 2010
Posts: 661
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From: Ca.
Thread Starter
Pro
Joined: Jan 2010
Posts: 661
Likes: 2
From: Ca.
Thread Starter
Pro
Joined: Jan 2010
Posts: 661
Likes: 2
From: Ca.
I am going to purchase some batteries and give it a try to replace the batteries of the sensors that I remove. It will only cost about $20 for the batteries. That way, when my other sensors on the run flats go bad, I will have replacements on hand. I called Digi-key, and they sell them for $3.68 each. Only problem is that they charge $15 shipping... Still a good deal. I am going to check and see if I can purchase the batteries locally. Not sure where though.
