I keep the tire pressure up on the middle information panel in screen #1 all the time. Screen #2 I use the middle information panel for other things, but when riding I only toggle in and out of screen 2 occasionally and leave it set on screen 1 so I can see if I have a leak in a tire while riding. I think you must be seeing the low tire pressure warning at the very bottom of the info panel. You can go into the setup and get the front and rear tire pressures to display constantly in one of the information panels so you will know if the pressure is dropping at a glance. It takes a reliable gauge to check the pressures and see if your monitors are on the money or off by a few PSI, which you need to know. Mine are on the money with two different gauges, one analog and one digital.