What Does the Wrench Icon on the Car Dashboard Mean?

Modern cars have over a dozen warning lights placed in the dashboards, such as lights for oil pressure, coolant temperature, battery, park assist, and the check engine light. The oil pressure light means that the engine is not receiving enough oil, while the check engine light, officially called a malfunction indicator light, means that there is an issue with the emissions system - if it is blinking, it requires immediate attention.