This light should come on briefly as you start the engine.

This light will also come on when one or more of your tires is significantly under-inflated. Stop and check your tires as soon as it is safe to do so. If underinflated, inflate them to the proper pressure. See Tires for more information. This light will flash for 60 seconds and then turn on solid if a problem is detected with the Tire Pressure Monitor System. See Tire Pressure Monitor System for more information.