Intermittent TPMS Fault

[RED09GT]

For the past week, after 20-30 minutes of highway driving the light comes on. It will sometimes go away a while later and always goes away if I turn off and re-start the car.
The wheels and tires are the OEM's and the tires have never been off the rims. I do swap them for a set of drag radials at the track but I'm pretty sure that I put them back on the same side, I've even tried switching them around but still get the same result.

I have stopped and checked the pressures immediately after the light has come on and all tires were at 35 psi (hot from highway driving) and settle back to 32 when cold. It does not come on for around town driving but I rarely drive it for more than 20 minutes in town.

Anyone have any idea what would cause this and why re-starting the car always fixes it? Other than replacing the sensors one at a time, can anyone suggest a way to diagnose this?

I searched and found one person who had a similar problem but their TPMS sensors were placed in a pressurized tube, so not relevant to this problem.

 

[Makdaddy]

For the past week, after 20-30 minutes of highway driving the light comes on. It will sometimes go away a while later and always goes away if I turn off and re-start the car.
The wheels and tires are the OEM's and the tires have never been off the rims. I do swap them for a set of drag radials at the track but I'm pretty sure that I put them back on the same side, I've even tried switching them around but still get the same result.

I have stopped and checked the pressures immediately after the light has come on and all tires were at 35 psi (hot from highway driving) and settle back to 32 when cold. It does not come on for around town driving but I rarely drive it for more than 20 minutes in town.

Anyone have any idea what would cause this and why re-starting the car always fixes it? Other than replacing the sensors one at a time, can anyone suggest a way to diagnose this?


I searched and found one person who had a similar problem but their TPMS sensors were placed in a pressurized tube, so not relevant to this problem.

Its probably a bad sensor you could try a relearn at Discount tire or another tire shop Or buy the tool from AM and retrain them

 

[konablue11gt]

yeah I have the same issue..i need to go get them trained...the tool from AM doesn't do squat ...I have tried a thousand times..same results when I get it into the teach mode on the car the tool from am doesn't register at all

 

[RED09GT]

yeah I have the same issue..i need to go get them trained...the tool from AM doesn't do squat ...I have tried a thousand times..same results when I get it into the teach mode on the car the tool from am doesn't register at all

Good to know, I won't bother getting that tool to try and fix it.


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[saleen07gt]

The correct way to diag this stuff is to have a scanner to pull the code and go from there. These sensors have internal batteries that get weak and don't put out a strong enough signal, usually wind up replacing the suspected tpm sensor. Then the new sensor has to be registeted to the tpm system. Alot of garages and tire stores have the right equipment.

 

[BruceH]

You can buy a Motorcraft training tool for about $15. When you train them the weak one will probably be tougher to train or won't register.

 

[RED09GT]

I'll pick up the motorcraft tool if it is that cheap, or I'll just deal with until it is time to upgrade the wheels and tires.

Gotta love a system that is so prone to false alarms that it is seen more as a nuisance than a necessity. Typical government mandated crap.


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