5. Warning Lights: If your car is working properly, these are what Audra Fordin of "What Women Auto Know" calls "hello, good morning" lights. You fire up theengine and the dashboard lights up like carnival. This is the car's computer checking everything out. One by one, each of the lights turns off and you're ready to drive. If they don't turn off, though, that's bad. Either very bad or slightly bad, depending on which light remains lit. These lights are connected to sensors that monitor everything your car does. If something seems out of whack, the computer will use these lights to tell you what it is. It can't use its words; it's not...