Thread: TPS light on!
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Old 11-17-2009, 02:41 PM   #12 (permalink)
ChrisSlicks
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Quote:
Originally Posted by feelzpwr91 View Post
mines been on since it started getting bleow 55 (mid oct)

it goes off if i drive it for more than 30 min, then when i start it back up the next day its on
Increase your cold tire pressure slightly.

Although the manual says the threshold is 27, my empirical testing shows that the light comes on at around 29 psi. If you set the tire pressures on a warm day to 35 psi all around you can expect them to be below 30 on the cold days. Conversely if you set them to 35 on a cold day you can expect them to be above 40 if the temperature comes up.

It's a good thing, just set your tire pressures accordingly about once per month and you will be fine. I see so many cars driving around on under-inflated tires it makes me cringe, although most of them seem to be SUV's, and they have at least one tire with around 10 psi. We have to do so little maintenance on cars these days yet the average person still never checks their tire pressure.
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