Dash lights are like synapses in your brain!

Lights go on and off as your car checks it's systems, Lights that stay on is how your car is talking to you, letting you know a system is in need. Think about your seat belt light! (:

Newer vehicles with a tire pressure monitoring system will have this warning when your tires don't have the correct amount of air, either too much or not enough. Don't drive over any nails!