I have my TPMS light on constantly as well. I think it is because of a slow leak or because when I was forced one time to drive down a gravel road a rock flew up and hit the tip where you place the air pressure gauge. Either way I am sure this gravel road is what caused the problem. I fill up my tires frequently also. A cheap way to solve the problem of the annoying orange TPMS light on the left side of the dash is to cut a very small piece of black electrical tape and place it over the light. Voila! No more annoying light, and the tape is barely noticeable. I always forget it is there. Just make sure to keep an eye on that tire...