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Originally Posted by colorado
(Post 349143)
just curious, does the spare tire have a TPS in it? Had to put on the spare and got the tps sensor warning. all at 40 PSI
You also have to check if your spare has been modified? Sensor was oem, however someone along the way could have installed a standard rubber stem? |
Proper rotation with a full sized spare, that should be performed every 6k miles:
https://cimg1.ibsrv.net/gimg/www.hum...2cdc098456.jpg |
Originally Posted by hummerz
(Post 349145)
ALL OEM wheels had tpms installed including the spare.
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Originally Posted by Broken Halo
(Post 349157)
Not true. Spare sensor was eliminated for sure in 2008 and possibly in 2007. Yes, another one of those little 'bean counter' cost cutters.
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My '07 spare has a tpms & the original tire. I removed it, along with the mount a couple of years ago and it's planted in the back yard. I've never needed it.
If you don't have the tpms in your spare, there is a different rotation sequence..(from 2007 h3 manual) https://cimg1.ibsrv.net/gimg/www.hum...5f4e602770.jpg |
Originally Posted by hummerz
(Post 349138)
What does 10 year old sensors have to do with temperature?:confused:
It's a fact that temperature affects pressure. For every 10degrees drop in temperature, pressure drops 1psi. I learned many years ago to raise my tire pressure to 38psi, and I never had a tpms light on during the winter since. I check my tires when it is warm outside, so I do not recommend setting the pressure to 38psi when it is below freezing. example: @70degrees 38psi that same 38psi will be at 31psi @0 degrees if you set to 38psi at 0 degrees then your tires pressure will go to 45psi at 70degrees. |
Originally Posted by 82Toy
(Post 349212)
Might be ten year old batteries in sensors, tires not registering low, just the service TPMS flashing, and goes out after a few miles.
You must have missed the point of my post: Temperature affects pressure. Sure, when you drive the vehicle, the pressure will increase as the tire heats up, and the TPMS light will go off. Raise the pressure to 38psi and the light will NEVER come on. My '07 (production date 08/06) has 88k miles on it, and still has the original TPMS', which are very close to 12years old(depending on the production date of the sensors, when the vehicle was manufactured) Battery life is around 10years, however it depends on how many miles are driven, as the sensors do not use battery life, when the vehicle is not driven. Take the advice that has been given by many on this site (numerous times by Doc) and raise your pressures 3psi. No matter what temperature you check them at, just raise them 3psi, and you will never see a tpms warning, unless you have a real problem, like a hole in the tire. :cool: |
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