It could have been a flaky guage that I was using. Although it was a digital gauge, that has not done bad by me since I got it. For the sake, I went and inflated all the tires at a gas station. Unfortunatelly without a gauge. Just counting the seconds so that at least I inflate them evenly, and check again once I get home. As soon as I started driving the light went off, and has not come back yet. I have to say that this is a very sensitive system than. Because, even if I was showing 34-35psi on the gauge, I doubt that it was actuall ~28psi. I'm a little confused on this one. I guess having this system is ok, but it is definatelly too sensitive. Thank you for the reply. I greatlly appreciate it.