If something goes wrong with your car and you don’t know much about car repair, then it’s time to go to the shop and find out what’s wrong. However, lots of people are understandably worried about getting ripped off—mechanics are pretty good at detecting when a customer doesn’t know anything about cars. To avoid this, it’s a good idea to narrow down the possibilities of what’s going on inside your car. The warning lights on your dashboard are the most obvious starting point.