Thread: Low tire pressure light
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Old Feb 9, 2012 | 04:20 PM
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onehundred80
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From: Ontario
Default Re: Low tire pressure light
Originally Posted by dtinker
If it is not the batteries in the sensor it may be moisture. When you air your tires up if the compressor is not drained of condensate water you can get water in the tire and it gets in the sensor and can cause it to fail. Just a thought, that's why you may have seen the nitrogen instead of air being offered. Nitrogen expands very little with heat, so the tire pressure is more constant.
That is not quite true, the difference between air and nitrogen vary very little in their reaction to heat.
The majority of the gas in air is nitrogen 78%, the rest is mostly oxygen 21%.
The benefit is the dryness of the nitrogen gas used at the tire store or whatever.
Calibration is done in a fixed sequence going from one tire to the next. How long do they last, the target was 10 years but any individual battery may not last that long or may last longer. Not only the sensor can fail but also the reciever as well.
 
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