Thread: TPMS Low pressure setting
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Old Dec 28, 2012 | 01:41 PM
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onehundred80
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From: Ontario
Default Re: TPMS Low pressure setting
Originally Posted by TiredRetired
Thanx. A search on kick on pressure came up empty for me so your input is appreciated. It is single digit temps right now so I was reluctant to crank the tires all the way up. I will just wait for spring and warmer temps, set the pressure to the rated amount and see what happens.

There is always Rudy's #2 wire removal to make the light go out if all else fails. I believe that to be legal as Federal law mandates all >10,000 GVW made after 2007 have the system and be operating. Mine of course is an 05 so TPMS then was a luxury, not another mandate by the nanny state.

Thanx again.
The pressure where the light comes on is one or more tires 25% below the normal tire pressure. This is stated in the Owners Manual. Cold weather can drop the pressure a couple of PSI, using the car the pressure will increase by 2 to 6 psi.
When the light comes on in cold weather it means the tire pressure was low before the cold temp, the cold did not drop it by 25% as some people think, just enough to reach the 25% less condition.

I'm sure that the 25% is an approximate number, but 25% of 32 psi is 24 psi.

Make sure your tire pressure gauge is accurate as many are not too great at all.
 
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