They can also register a false positive, if you happen to drive through cold standing water that's just deep enough to immerse the barrel of the rim.

In part, we have this system because of the Explorer/Firestone episode where really only a few SUV owners couldn't be bothered to maintain their tires at somewhere near reasonable inflation pressure. The other part was the development of run-flat tires so mfrs could let a car go to production and sale with no spare at all.


Norm

 

I fully expected to have to retrain my sensors, i bought new ones when I got my new wheels. I had them all mounted up and have now driven the car for about two months and the sensors just worked. i didnt have to get them trained or anything, no light and they work perfectly.

 

you actually let air out and came on? my experience is will not flash even if not trained, only way i know worked let air out drove 20 mins

 

tpms is retarded. It was made for the folks who would drive along on a flat tire and not even realize it (a.k.a...the stupid) Just change your wheels and ignore the light.

 

trust me the light seems not to come even if not working, when i dropped to 25 lbs from 42 on rear and drove knowing i let that much out, and could not really feel the right rear too low, the light coming on is nice feature, if you let go totally flat and drive, you are stupid, if my 40,000$ caddy had them i would have known to pull over soon but glad i looked at it when i came out the store, parked 1/4 mile from a firestone store, had i had them would have known low ahead time cause there was no indication was low, please don't classify me with them SUV drive til bad drivers, air pressure checked when tires cold every saturday and the ride is great.

 

I have an '09 that I put '10 GT take off wheels on. They don't work at all, as Ford changed form the wheel bands in '06 to '09, to the valve stem type in '10. I just ignore the light, but it's a pain having to push the information center reset button every time I start the car. I guess they have valve stem type that works with the older style, but the price is outrageous. Guess I'll just live with it.....

 

So the '11 GT's have the valve stem type of sensors? Because the stems on my OEM 18" wheels are rubber, usually they're metal, right? With a collar you can unscrew which then lets you remove the sensor from the inside of the wheel? I have new wheels getting here today and would like to figure out if I have the valve stem type or band type because I'll be moving the sensors over...

 

I bought 2010 GT500 wheels and put them on my car, and for the summer no codes have been thrown. I found an old thread about this...

https://mustangforums.com/forum/gt-s...-mustangs.html