Tire Sensor Issues
Thread Starter
Racer
Joined: Aug 2001
Posts: 346
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From: Laguna Niguel CA
Tire Sensor Issues
:( Unfortunately, I had the "dealer" service LF Sensor which had been intermittent since tires were replaced 18 months ago. I Picked up the car and now none of the sensors give a reading and because LF is possibly defective it will not respond to Training procedure as described by Brazen C5. Because of this the DIC will not go beyond Learn LF. Any suggestions? :banghead: At this point I would be happy to go back to original LF intermittent. :mad "Dealer" is worthless and I refuse to let them touch my car anymore since they were even negligent in replacing low oil with lights and bells going off.
HELP!!!!!!!!!
[Modified by NYN8IVE, 11:21 AM 3/17/2004]
HELP!!!!!!!!!
[Modified by NYN8IVE, 11:21 AM 3/17/2004]
Le Mans Master
Joined: Aug 2001
Posts: 8,059
Likes: 0
From: Good Ol' NC
Re: Tire Sensor Issues (NYN8IVE)
when doing the training if your LF wont train I think it automatically times out and goes to the next ? not sure though but try a different bigger magnet sometimes they dont always register that easily.
Thread Starter
Racer
Joined: Aug 2001
Posts: 346
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From: Laguna Niguel CA
Re: Tire Sensor Issues (nericreations)
Thanks for the advice
I'll try again, but I'm pretty sure it just went back to FOB Training.
I'm using a really strong magnet that's designed to attract metal particles in oil.
I'll try again, but I'm pretty sure it just went back to FOB Training.
I'm using a really strong magnet that's designed to attract metal particles in oil.
Thread Starter
Racer
Joined: Aug 2001
Posts: 346
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From: Laguna Niguel CA
Re: Tire Sensor Issues (NYN8IVE)
After 2 minutes it did return to FOB Training. So here's what I did, after reading a million posts on the subject it occured to me that somewhere down the line maybe one of the wheels or Tires was mounted out of sequence, I took my trusty magnet and started with RF, it beeped RR, it beeped LR, it beeped and LF still no beep but I'm at least back to square one 3 out of 4 is livable until I can get it to a dealer that I trust. :rant: This dealer obviously never tried to reprogram the sensors. By the way the Dealer is SOPP Chevrolet in Los Angeles, AVOID AT ALL COSTS!!!! After charging $86.00 PER HOUR X 3 Hours to replace my front pads and cut rotors they did not even check fluids, tire pressure etc. My wife's Jaguar Dealer charges less, washes the car, and gives free loaner with FREE Scheduled Maintenance. Unfortunately, poor dealers like this make the experience of owning a fine car like this lousy and turn off people and send them running to an import franchise. This is the first car I've ever owned that I dread going to the dealer for and from reading posts over the years and talking to fellow owners I'm the Norm. :(
Thread Starter
Racer
Joined: Aug 2001
Posts: 346
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From: Laguna Niguel CA
Re: Tire Sensor Issues (allanlaw)
What's weird is my DIC says Rear Left XXX but that sensor responded to magnet. My Front Left still is unresponsive to magnet but it reads pressure whereas before Left Front read XXX and Rear left read ok. :confused: :steering:
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Tech Contributor
Joined: Oct 1999
Posts: 40,995
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From: Charlotte, NC (formerly Endicott, NY)
Re: Tire Sensor Issues (NYN8IVE)
It doesn't matter if the wheels are mounted out of sequence as long as you do not have directional tire issues. If your left front unit really will not program and you follow the procedure the other 3 tires will reflect the correct corner they are on. The LF reading should then be blank. If the LF doesn't program (honk the horn) but still provides a reading you shouldn't have problem other than the value it is transmitting.
Bill
Bill
Drifting
Joined: Jun 2001
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From: "Once you have flown, you will walk the earth with your eyes turned skyward; for there you have been
Re: Tire Sensor Issues (NYN8IVE)
What's weird is my DIC says Rear Left XXX but that sensor responded to magnet. My Front Left still is unresponsive to magnet but it reads pressure whereas before Left Front read XXX and Rear left read ok. :confused: :steering:
Here are a couple of things you can try... First if you have metallic caps on the stems remove them and try to retrain...If that does not work... sometimes when you have new tires mounted up the tire shop will remove the schrader valve (very important) and replace it with a generic valve... for some reason there are some schrader valves out there that will interfere with the transmitter (valve stem is the antenna) So... if you have access to air... swap the schrader with a tire and sensor you know works.... Good Luck!
[Modified by XmentalPilot, 3:37 PM 3/18/2004]
Thread Starter
Racer
Joined: Aug 2001
Posts: 346
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From: Laguna Niguel CA
Re: Tire Sensor Issues (XmentalPilot)
What's weird is my DIC says Rear Left XXX but that sensor responded to magnet. My Front Left still is unresponsive to magnet but it reads pressure whereas before Left Front read XXX and Rear left read ok. :confused: :steering:
That is because you (skipped the LF) and trained the RF into the LF computer position, the RR into the RF position, the LR thinks it is the RR and because you could not get the LF to train... there is no sensor trained in the LR position of the TPM reciever. Hence the XXX. That is why there is a specific order for training the sensors ... so that they will read in the correct LF/RF LR/RR display windows on the DIC.
[Modified by XmentalPilot, 3:29 PM 3/18/2004]
That is because you (skipped the LF) and trained the RF into the LF computer position, the RR into the RF position, the LR thinks it is the RR and because you could not get the LF to train... there is no sensor trained in the LR position of the TPM reciever. Hence the XXX. That is why there is a specific order for training the sensors ... so that they will read in the correct LF/RF LR/RR display windows on the DIC.
[Modified by XmentalPilot, 3:29 PM 3/18/2004]
What is the Deal??? :confused: :sad:
Drifting
Joined: Jun 2001
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From: "Once you have flown, you will walk the earth with your eyes turned skyward; for there you have been
Re: Tire Sensor Issues (NYN8IVE)
Just curious... after you retrained did you drive the car. I know on the 97-00 sensors you have to wake them up by driving at least 10-15 mph... not sure about 01 and newer... probably couldn't hurt anyway. I know the newer sensors update the pressure a little differently than the 97-00 ones.
Melting Slicks
Joined: Jan 2000
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From: Wichita KS
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Re: Tire Sensor Issues (NYN8IVE)
If the L/F does not respond and honk the horn, then go to the R/F and do it twice, this will put the R/F R/R L/R in the right location in the computer. It's that simple. As long as the other 3 honk the horn.
Melting Slicks
Joined: Jan 2000
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From: Wichita KS
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Re: Tire Sensor Issues (NYN8IVE)
Yes, I just realized that but now they all read XXX again. I retrained once again but after about 45 minutes or so it goes back to XXX on all tires. Even when it retrains it reads 35 on all Tires until it goes blank.
What is the Deal??? :confused: :sad:
What is the Deal??? :confused: :sad:
Instructor
Joined: Aug 2000
Posts: 248
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Re: Tire Sensor Issues (Flyin'Brian)
Most of the above info is correct. But pertaining to the old style sensors used in 97-00 there is a small metal ball bearing in the unit. When the car goes 15mph the cetrifacal force makes the ball come in contact with a switch and tells the sensor to transmit a pressure using the valve stem as the antenna like was stated earlier. According to the manual the sensor batteries which are lithium are supposed to have a life of 10 years. Thats all the info I know of pertaining to the sensors. This guy on the forum says he can repair them but I read that they are non serviceable. I will get a new one and than try to take the old one apart if I can :cheers:
Thread Starter
Racer
Joined: Aug 2001
Posts: 346
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From: Laguna Niguel CA
Re: Tire Sensor Issues (Flyin'Brian)
Thanks for the advice but it would not accept programming twice on same tire. It doesn't matter because it will not hold training for more than a few minutes anyway. I don't know what the idiot at dealer did but I received permission from GM Major Guard to take it to another Dealer, the one near my home where I bought it and not the one near where I work. They will waive the deductible for me :D and I'm sure this dealer will fix it correctly.
