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So I recently had my 17 inch wheels put on this weekend. I was driving down the road & my TPS system flashed up saying "Tire pressure monitor fault". What's the deal with this?
 

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I believe you have to have something changed when you change you wheel size on the new models if im not mistaken. I remember reading about people having trouble like that
 

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theres a sensor I think you gotta replace when you put on aftermarket wheels.
 

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Detailing Freak
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the oem rims have the pressure monitors built into them... aftermarket do not

not sure if you can get that working with aftermarket rims or not, never looked into it
 

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The sensor is clamped around the OE wheel and should be interchangeable. Did you have new sensors put on your new wheels?
 

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Yeah I recently upgraded to 17's on my 08 and I knew the TPMS light was going to come on since I didn't bother to buy new sensors for them. It's no biggie, just press reset every time the warning chime comes on and your set. This won't make the light turn off but it will clear your message screen and stop the warning chime from ringing over and over. It's a little annoying having to deal with it but I got used to it. Besides, it way cheaper to just deal with the inconvenience than having to schill out another $350 buck for new TPMS sensors.
 

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The sensor is clamped around the OE wheel and should be interchangeable. Did you have new sensors put on your new wheels?
I think they are strapped around the wheel and because the OEM wheels are 16's they wouldn't fit on a bigger wheel size. At least that is what Tire Rack says.
 

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sensors on wheels???? wtf...thanks for the warning to stay away from the 08's LOL
TPMS is here and here to stay. Ford is actually using a lot better design than anyone else who is using the sensor bolted to the valve stem. a 17" Mustang sensor set up would also work if you did the sensor relearn procedure.
 

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Then you get another hose clamp and make it work.
Yeah I'm pretty sure there is a way to make it work. Next time I get new tires I'll try to find a way to use the old sensors.
 

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Shiroi kabocha
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You should just be able to interchange the old ones into your new wheels. I am getting 18s in the near future and I will be swapping out the TMPS from my OEM 15" steelies.
 
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