Bar warning light

Modern vehicles are complex machines. The average new car has over two dozen computer modules working behind the scenes, a vast network of sensors, and hundreds of electrical wires linking all these components together. This complexity means that there is a lot to go wrong with a car, and when things do, your first indication is often a warning light on the dashboard. Dashboard warning lights come in a variety of colors. The most serious lights are red, and they typically indicate a major issue or component failure. Yellow or amber lights often indicate a lower-grade hazard or warning, such as the activation of the traction control system when driving on slippery roads. Green and blue lights simply indicate that a feature is engaged, such as the headlights or cruise control.